A study led by St. Jude Children’s Research Hospital scientists has
identified the population of white blood cells that tumors use to
enhance growth and suppress the disease-fighting immune system. The
results, which appear in the December 18 edition of the scientific
journal Immunity, mark a turning point in cancer immunology and provide the foundation for developing more effective immunotherapies.
For years, researchers have known that a diverse group of white blood
cells called myeloid-derived suppressor cells (MDSC) are more abundant
in cancer patients than in healthy individuals. The cells enhance cancer
growth and suppress the specialized T cells that target and destroy
tumor cells. MDSCs have a common origin in the bone marrow, but leave to
travel throughout the body and become immune cells with different
functions. Blocking T cells is one of the main MDSC functions.
Until now, however, efforts to distinguish among the cell types and
identify the population responsible for anti-tumor immune suppression
have fallen short. The puzzle has hampered efforts to harness the immune
system to fight disease.
"We have identified the monocytic cells as the important cell to
target, not only in cancer but possibly for treatment of autoimmune
disorders like rheumatoid arthritis or inflammatory bowel diseases where
dampening the immune response could provide relief," said corresponding
author Peter Murray, Ph.D., a member of the St. Jude departments of
Infectious Diseases and Immunology. "We also identified growth factors
and other molecules essential to the survival and function of these
monocytic cells. Targeting these molecules could lead to more precise
approaches for controlling the immune response at the tumor site.
"This study marks a significant step in efforts to understand,
develop and optimize immunotherapies for treatment of cancer," he said
This site is for information on the various Chemo treatments and Stem Cell Therapies since 1992. This journey became bitter sweet in 2014, with the passing of my beautiful and dear wife. Sherry, had fought Non - Hodgkins Lymphoma(NHL) since 1990, in and out of remissions time and time again. From T-Cell therapies(1990's) to Dual Cord Blood Transplant(2014), she was in Clinical Trials over the years. This site is for informational purpose only and is not to promote the use of certain therapies.
Tuesday, December 30, 2014
Blincyto:for the treatment of Philadelphia chromosome-negative relapsed /refractory B cell precursor acute lymphoblastic leukemia
Blincyto (blinatumomab)Approved Dec. 2014: is an immunotherapy. It engages the body’s
T-cells, a type of white blood cell or lymphocyte, to destroy leukemia
cells. The drug acts as a connector between a protein called CD19, which
is found on the surface of most B-cell lymphoblasts, and CD3, a protein
on T-cell lymphocytes.
Blincyto is specifically indicated for the treatment of Philadelphia chromosome-negative relapsed or refractory B-cell precursor acute lymphoblastic leukemia.
Blincyto is supplied as a solution for intravenous infusion. Hospitalization is recommended for the first 9 days of the first cycle and the first 2 days of the second cycle. For all subsequent cycle starts and reinitiation (eg, if treatment is interrupted for 4 or more hours), supervision by a healthcare professional or hospitalization is recommended. Do not flush the Blincyto infusion line, especially when changing infusion bags. Flushing when changing bags or at completion of infusion can result in excess dosage and complications. The recommended dosing schedule is as follows:
A single cycle of treatment of Blincyto consists of 4 weeks of continuous intravenous infusion followed by a 2-week treatment-free interval.
• For patients at least 45 kg in weight:
- In Cycle 1, administer Blincyto at 9 mcg/day on Days 1–7 and at 28 mcg/day on Days 8–28.
- For subsequent cycles, administer Blincyto at 28 mcg/day on Days 1–28.
• Allow for at least 2 weeks treatment-free between cycles of Blincyto.
• A treatment course consists of up to 2 cycles of Blincyto for induction followed by 3 additional cycles for consolidation treatment (up to a total of 5 cycles).
Adverse effects associated with the use of Blincyto may include, but are not limited to, the following:
For additional information regarding Blincyto or Philadelphia chromosome-negative relapsed /refractory B cell precursor acute lymphoblastic leukemia, please visit www.amgen.com
Blincyto is specifically indicated for the treatment of Philadelphia chromosome-negative relapsed or refractory B-cell precursor acute lymphoblastic leukemia.
Blincyto is supplied as a solution for intravenous infusion. Hospitalization is recommended for the first 9 days of the first cycle and the first 2 days of the second cycle. For all subsequent cycle starts and reinitiation (eg, if treatment is interrupted for 4 or more hours), supervision by a healthcare professional or hospitalization is recommended. Do not flush the Blincyto infusion line, especially when changing infusion bags. Flushing when changing bags or at completion of infusion can result in excess dosage and complications. The recommended dosing schedule is as follows:
A single cycle of treatment of Blincyto consists of 4 weeks of continuous intravenous infusion followed by a 2-week treatment-free interval.
• For patients at least 45 kg in weight:
- In Cycle 1, administer Blincyto at 9 mcg/day on Days 1–7 and at 28 mcg/day on Days 8–28.
- For subsequent cycles, administer Blincyto at 28 mcg/day on Days 1–28.
• Allow for at least 2 weeks treatment-free between cycles of Blincyto.
• A treatment course consists of up to 2 cycles of Blincyto for induction followed by 3 additional cycles for consolidation treatment (up to a total of 5 cycles).
Adverse effects associated with the use of Blincyto may include, but are not limited to, the following:
- pyrexia
- headache
- peripheral edema
- febrile neutropenia
- nausea
- hypokalemia
- tremor
- rash
- constipation
For additional information regarding Blincyto or Philadelphia chromosome-negative relapsed /refractory B cell precursor acute lymphoblastic leukemia, please visit www.amgen.com
Monday, December 29, 2014
New Cancer Therapy Drug: Gilead; for the treatment of relapsed CLL, follicular B-cell NHL
Zydelig (idelalisib) is a small molecule inhibitor of
phosphoinositide-3 kinase (PI3K) delta, an intracellular signaling
component. PI3K-delta is expressed primarily in blood-cell lineages,
including cells that cause or mediate hematologic malignancies.
Zydelig is specifically indicated for the following:
Adverse effects associated with the use of Zydelig may include, but are not limited to, the following:
diarrhea
pyrexia
fatigue
nausea
cough
pneumonia
abdominal pain
chills
rash
For additional information regarding Zydelig or relapsed chronic lymphocytic leukemia, relapsed follicular B-cell non-Hodgkin lymphoma and relapsed small lymphocytic lymphoma, please visit www.zydelig.com
Zydelig is specifically indicated for the following:
- Relapsed chronic lymphocytic leukemia in combination with rituximab, in patients for whom rituximab alone would be considered appropriate therapy due to other co-morbidities.
- Relapsed follicular B-cell non-Hodgkin lymphoma in patients who have received at least two prior systemic therapies.
- Relapsed small lymphocytic lymphoma in patients who have received at least two prior systemic therapies
Adverse effects associated with the use of Zydelig may include, but are not limited to, the following:
diarrhea
pyrexia
fatigue
nausea
cough
pneumonia
abdominal pain
chills
rash
For additional information regarding Zydelig or relapsed chronic lymphocytic leukemia, relapsed follicular B-cell non-Hodgkin lymphoma and relapsed small lymphocytic lymphoma, please visit www.zydelig.com
Tuesday, December 23, 2014
U.S. Approves Skin Cancer Treatment
U.S. regulators Monday approved
Bristol-Myers Squibb
Co.
’s Opdivo for advanced skin cancer, the latest drug to reach the market in the emerging field of cancer immunotherapy.
The decision by the Food and Drug Administration means Bristol-Myers now has two drugs on the market that work by unleashing the body’s immune system to attack tumors, helping to solidify the company’s lead in an area of cancer treatment that has drawn wide interest across the pharmaceutical industry.
It also comes amid a flurry of year-end drug approvals by the federal agency, including three last Friday. Opdivo, which is also known by the chemical name nivolumab, is the eighth new drug to reach the market in the past four years for late-stage melanoma, a historically lethal disease.
Bristol-Myers officials said the company plans to charge an average of $12,500 a month for the treatment, the same price as the rival drug Keytruda from Merck & Co., which was approved in September. Both drugs target a protein called PD-1, a molecular brake that prevents the immune system from seeing tumors as invaders and enables cancer to avoid attack.
The two drugs are approved for patients who fail to respond to certain other medicines including Yervoy, another Bristol-Myers immunotherapy drug that was approved for advanced melanoma in 2011 and that works by releasing a different immune system brake.
All three drugs belong to a class of agents known as checkpoint inhibitors that, by unleashing an immune system attack against cancer, are enabling significant numbers of patients to live years longer than would otherwise be expected. Roche Holding AG and AstraZeneca PLC are among other companies testing agents against immune system brakes.
Approval of Opdivo “is a confirmation of the strength of our strategy” to focus the company’s efforts on cancer immunotherapy, said Giovanni Caforio, Bristol-Myers’s chief operating officer. “The ability to come to the market with a second very important medicine is something we’ve been working for and we’re very proud of it.”
The approval, which came under the FDA’s so-called breakthrough designation initiative, was based on the experience of 120 participants in a continuing clinical trial, among whom 32% had significant tumor shrinkage. The effect lasted for more than six months in about one-third of such patients, the FDA said.
The most serious side effects included a severe immune response against healthy organs, including the lung, and were generally managed by using aggressive treatment with steroids.
The decision by the Food and Drug Administration means Bristol-Myers now has two drugs on the market that work by unleashing the body’s immune system to attack tumors, helping to solidify the company’s lead in an area of cancer treatment that has drawn wide interest across the pharmaceutical industry.
It also comes amid a flurry of year-end drug approvals by the federal agency, including three last Friday. Opdivo, which is also known by the chemical name nivolumab, is the eighth new drug to reach the market in the past four years for late-stage melanoma, a historically lethal disease.
Bristol-Myers officials said the company plans to charge an average of $12,500 a month for the treatment, the same price as the rival drug Keytruda from Merck & Co., which was approved in September. Both drugs target a protein called PD-1, a molecular brake that prevents the immune system from seeing tumors as invaders and enables cancer to avoid attack.
The two drugs are approved for patients who fail to respond to certain other medicines including Yervoy, another Bristol-Myers immunotherapy drug that was approved for advanced melanoma in 2011 and that works by releasing a different immune system brake.
All three drugs belong to a class of agents known as checkpoint inhibitors that, by unleashing an immune system attack against cancer, are enabling significant numbers of patients to live years longer than would otherwise be expected. Roche Holding AG and AstraZeneca PLC are among other companies testing agents against immune system brakes.
Approval of Opdivo “is a confirmation of the strength of our strategy” to focus the company’s efforts on cancer immunotherapy, said Giovanni Caforio, Bristol-Myers’s chief operating officer. “The ability to come to the market with a second very important medicine is something we’ve been working for and we’re very proud of it.”
The approval, which came under the FDA’s so-called breakthrough designation initiative, was based on the experience of 120 participants in a continuing clinical trial, among whom 32% had significant tumor shrinkage. The effect lasted for more than six months in about one-third of such patients, the FDA said.
The most serious side effects included a severe immune response against healthy organs, including the lung, and were generally managed by using aggressive treatment with steroids.
Friday, December 19, 2014
Cancer drug developer caps busy year for IPOs, especially by biotech firms
Juno Therapeutics Inc. shares surged 63% in their market debut
Friday, after a flurry of demand for the year’s last expected new
offering led the biotech firm to price above its already-boosted range.
Juno, which develops cancer treatments that use the body’s own immune system to fight the disease, began trading Friday on the Nasdaq at $39 a share JUNO, +45.83% after pricing 11 million shares at $24.
The open price of $39 values Juno at more than $3 billion, the largest valuation for a biotech going public since IPO research firm Renaissance Capital began tracking this kind of data a little over a decade ago. Juno’s valuation comes despite the fact that the biotech has no revenue, has never reported a profit and has no drug candidates in late-stage trials.
Juno, which develops cancer treatments that use the body’s own immune system to fight the disease, began trading Friday on the Nasdaq at $39 a share JUNO, +45.83% after pricing 11 million shares at $24.
The open price of $39 values Juno at more than $3 billion, the largest valuation for a biotech going public since IPO research firm Renaissance Capital began tracking this kind of data a little over a decade ago. Juno’s valuation comes despite the fact that the biotech has no revenue, has never reported a profit and has no drug candidates in late-stage trials.
I.P.O. of Juno Therapeutics, Developer of a Cancer Treatment, Excites Investors
Excitement over a
promise of a new type of cancer treatment ignited a frenzy on Wall
Street Friday as a little-known year-old company pulled off one of the
largest initial public stock offerings in the biotechnology sector.
The company, Juno
Therapeutics, sold 11 million shares at $24 each on Thursday in its
initial public offering. The company increased its price and the number
of shares offered earlier that day after a surge in demand.
When trading started
on Friday, the stock soared, closing at $35 a share, up 46 percent, and
giving Juno a market valuation of about $2.7 billion.
Juno, based in
Seattle, is working on sophisticated treatments that genetically
engineer the body’s immune cells so they can better recognize and kill
cancer cells. Its approach has been tried so far on a relatively small
number of patients, but the results have been extraordinary. Some people
with leukemia have been rescued
from near-certain death. A study of one of Juno’s drugs found an 89
percent remission rate among 27 adults with acute lymphoblastic leukemia
no longer responding to other treatments.
Juno has
collaborations with the Fred Hutchinson Cancer Research Center in
Seattle, Seattle Children’s Research Institute and the Memorial Sloan
Kettering Cancer Center in New York, and they could be in for a windfall
if the company succeeds.
In addition to the
usual royalties and milestone payments that companies pay to suppliers
of technology, Juno will make “success payments” to the Hutchinson
center and Sloan Kettering if the company’s stock is above certain
prices at certain points in time. The total payments could be as much as
$375 million in cash and stock for the Hutchinson center and $150
million for Sloan Kettering.
Even before raising
$264 million its public offering, Juno had raised more than $300 million
privately, a large amount for such a young firm. One early investor was
Jeff Bezos, head of Seattle-based Amazon. Juno’s largest shareholder,
with about a 30 percent stake, is a fund that invests the State of
Alaska’s oil revenue
Thursday, December 18, 2014
A new strategy for developing drugs to fight Cancer and other diseases
Promising treatments known as biologics are on the market and under
development for many serious illnesses such as cancer, but some of them
come with high risks, even lethal ones. Now scientists have produced a
novel class of molecules that could be as effective but without the
dangerous side effects. They report their work on these compounds, which
they tested on prostate cancer cells, in ACS' Journal of the American Chemical Society
David A. Spiegel and colleagues explain that biologics are protein-based therapies that have revolutionized cancer treatment over the past decade. These compounds work by latching onto malignant cells and then triggering the immune system to destroy them -- an approach known as immunotherapy. More than 400 kinds are currently undergoing testing in clinical trials. Although they're very effective at clearing out cancer cells, biologics have serious drawbacks -- including potentially fatal allergic reactions -- that are mainly due to their relatively large size. Spiegel's team wanted to develop an alternative that would be just as effective but without the risks.
The researchers produced a set of molecules that they call synthetic antibody mimics, or SyAMs. These molecules act like biologics by sparking an immune response but are far smaller. In lab tests, a subgroup called SyAM-Ps worked well against prostate cancer cells. Because of their small size, the researchers suggest that SyAMs could avoid many of the pitfalls that have plagued biologics. The compounds could represent an entirely new direction in immunotherapy for treating cancer and other diseases, the researchers conclude.
David A. Spiegel and colleagues explain that biologics are protein-based therapies that have revolutionized cancer treatment over the past decade. These compounds work by latching onto malignant cells and then triggering the immune system to destroy them -- an approach known as immunotherapy. More than 400 kinds are currently undergoing testing in clinical trials. Although they're very effective at clearing out cancer cells, biologics have serious drawbacks -- including potentially fatal allergic reactions -- that are mainly due to their relatively large size. Spiegel's team wanted to develop an alternative that would be just as effective but without the risks.
The researchers produced a set of molecules that they call synthetic antibody mimics, or SyAMs. These molecules act like biologics by sparking an immune response but are far smaller. In lab tests, a subgroup called SyAM-Ps worked well against prostate cancer cells. Because of their small size, the researchers suggest that SyAMs could avoid many of the pitfalls that have plagued biologics. The compounds could represent an entirely new direction in immunotherapy for treating cancer and other diseases, the researchers conclude.
Wednesday, December 17, 2014
There are three kinds of Bone Marrow or Stem Cell Transplants
- A bone marrow transplant is a procedure to replace damaged or destroyed bone marrow with healthy bone marrow stem cells.
Bone marrow is the soft, fatty tissue inside your bones. Stem cells are immature cells in the bone marrow that give rise to all of your blood cells. - Autologous bone marrow transplant: The term auto means self. Stem cells are removed from you before you receive high-dose chemotherapy or radiation treatment. The stem cells are stored in a freezer (cryopreservation). After high-dose chemotherapy or radiation treatments, your stems cells are put back in your body to make (regenerate) normal blood cells. This is called a rescue transplant.
- Allogeneic bone marrow transplant: The term allo means other. Stem cells are removed from another person, called a donor. Most times, the donor's genes must at least partly match your genes. Special blood tests are done to see if a donor is a good match for you. A brother or sister is most likely to be a good match. Sometimes parents, children, and other relatives are good matches. Donors who are not related to you may be found through national bone marrow registries.
- Umbilical cord blood transplant: This is a type of allogeneic transplant. Stem cells are removed from a newborn baby's umbilical cord right after birth. The stem cells are frozen and stored until they are needed for a transplant. Umbilical cord blood cells are very immature so there is less of a need for matching. But blood counts take much longer to recover.
Tuesday, December 16, 2014
Pioneering a new Treatment that Heats the Blood, Kills Cancer Cells
A new cancer-fighting strategy that kills deadly cells by raising body temperatures is heating up in the Bay Area.
Whole body hyperthermia is a cancer therapy in which the patient’s body temperature is raised high enough to kill cancer throughout the body.
“Cancer cells are not normal. They don’t repair themselves well, and are subject to being destroyed by methods your cells can handle,” Dr. James Lilja stated. Doctors at San Jose’s Good Samaritan Hospital are using pioneering the research. The method uses tubes outside the patient’s body to heat blood with hot water to well over 100 degrees before it’s re-infused.
The therapy lasts about two hours, long enough to kill only the cancer, and a special filtering system keeps the blood from going bad.
“By using this kind of a system we’re able to remove, we think some of the unknown dangerous chemicals that are released by the body,” Dr. Roger Vertrees said.
Two patients have been treated in the first clinical trial, and have been able to return to work.
“The hope for this therapy is that it becomes a standard modality for treating cancer like chemotherapy, radiation and surgery,” Dr. Vertrees said.
Good Samaritan is looking for other patients with ovarian cancer to participate in its clinical trials
Whole body hyperthermia is a cancer therapy in which the patient’s body temperature is raised high enough to kill cancer throughout the body.
“Cancer cells are not normal. They don’t repair themselves well, and are subject to being destroyed by methods your cells can handle,” Dr. James Lilja stated. Doctors at San Jose’s Good Samaritan Hospital are using pioneering the research. The method uses tubes outside the patient’s body to heat blood with hot water to well over 100 degrees before it’s re-infused.
The therapy lasts about two hours, long enough to kill only the cancer, and a special filtering system keeps the blood from going bad.
“By using this kind of a system we’re able to remove, we think some of the unknown dangerous chemicals that are released by the body,” Dr. Roger Vertrees said.
Two patients have been treated in the first clinical trial, and have been able to return to work.
“The hope for this therapy is that it becomes a standard modality for treating cancer like chemotherapy, radiation and surgery,” Dr. Vertrees said.
Good Samaritan is looking for other patients with ovarian cancer to participate in its clinical trials
Shorter Radiation therapy Not a Bad Idea
“I
started my residency in 1993,” Dr. Freedman said. “That was drilled
into us”: Shorter and more intense radiation therapy “was a bad idea and
would have a bad cosmetic result.”
But
with improved equipment and methodology, he said, the clinical trials
found that cosmetic results were just as good with the shorter
treatment. “They did not just publish that the cure rates were the same,
but they published very in-depth cosmetic assessments, particularly the
British, who took pictures that were graded by blinded observers,” he
said.
“That’s when the tide started turning.”
Monday, December 15, 2014
Shorter Radiation Therapy vs the standard in Breast Cancer Treatments
In
Canada and Britain, the statistics were far different. At least
two-thirds of women in both groups received the shorter therapy.
In
the United States, total medical expenses for the shorter therapy in
women for whom it was endorsed were $28,747. For comparable women
receiving the longer course of treatment, the cost was $31,641. For the
second group of women — for whom the shorter therapy was neither
endorsed nor discouraged — medical costs were $64,723, compared with
$72,860 for conventional therapy. Health insurers pay for radiation in a
piecemeal fashion, and the shorter course involves about 16 doses,
compared with about 33 with the conventional therapy.
Dr.
Harold J. Burstein, a medical oncologist at Dana-Farber Cancer
Institute in Boston, said that when the initial results of a Canadian
trial on the shorter therapy were published in 2002, “there was real
ambivalence about changing practice based on one study.” Doctors wanted
to see what would happen as the women were followed over a longer time,
and they wanted to see the result confirmed.
The
results of that study contradicted years of practice in the field, said
Dr. Gary M. Freedman, a breast radiation oncologist at the University
of Pennsylvania and an author of the new study. In the 1970s and 1980s,
when equipment was much less sophisticated, radiation oncologists found
that shorter and more intense therapy burned women’s skin and scarred
their breasts, making them shrivel and shrink over the ensuing decade.
Thursday, December 11, 2014
A New study on Radiation in Breast Cancer Therapies
In
the new study, published Wednesday in JAMA, The Journal of the American
Medical Association, two University of Pennsylvania doctors, Ezekiel J. Emanuel
and Justin E. Bekelman, and their colleagues analyzed data from 14
commercial insurance plans involving 15,643 women who had their breasts
irradiated after lumpectomies.
Radiation is used after women have lumpectomies because it reduces the odds that another cancer will arise in the breast, and it improves the chances of survival.
The
researchers considered two groups of women who had radiation therapy
and asked how many had received the shorter course. One group closely
matched women in the previous randomized studies that evaluated the
conventional treatment versus the shorter one. These women were older
than 50 and had early-stage cancers. Practice guidelines published in
2011 by the American Society for Radiation Oncology recommend the
shorter radiation therapy for this group.
The other group differed from participants in the previous studies because they were younger, had had prior chemotherapy or had cancer
cells in their lymph nodes, indicating a more advanced cancer. The
practice guidelines neither endorse nor discourage the shorter therapy
for these women.
Use
of the shorter course of radiation increased in both groups of women
from 2008 to 2013, but still only a minority received this treatment. In
the group that should have received the shorter therapy under the
guidelines, 10.6 percent received it in 2008 and 34.5 percent in 2013.
In the group that received no recommendation for or against the shorter
treatment, the percentage who used it rose from 8.1 percent to 21.2
percent over that time.
In
Canada and Britain, the statistics were far different. At least
two-thirds of women in both groups received the shorter therapy.
Wednesday, December 10, 2014
Long radiation treatments faulted in many Breast Cancer cases
Two-thirds of women who have lumpectomies for breast cancer are receiving radiation treatment that lasts nearly twice as long as necessary, a new study reports.
The conventional, longer treatment lasts five to seven weeks. But four rigorous studies and guidelines from a leading radiology society conclude that three to four weeks of more intense radiation is just as effective.
Women overwhelmingly prefer the shorter course of radiation, studies have found. It is also less expensive.
Even though 60 to 75 percent of women with breast cancer
have lumpectomies — a total of about 140,000 to 160,000 women — doctors
and health insurers say relatively few are receiving the shorter
treatment because it takes time to change ingrained medical practices,
especially when a procedure has been used for decades and the new one
offers no additional medical benefit. Its advantages are saving time for
patients, and money for the health care system and insurers.
“If
a physician is doing five to seven weeks of radiation for 25 years,
particularly if the physician is not a specialist and not in an academic
medical center, you will be a bit leery about going to something new,”
said Dr. Bruce G. Haffty, a professor and chairman of the department of
radiation oncology at the Rutgers Cancer Institute of New Jersey. “You
are comfortable with the outcomes, patients are satisfied. Now you’ve
got something that perhaps costs a bit less, but you wonder: Is it as
effective?”
Tuesday, December 9, 2014
New Cancer Treatments Represent Major Breakthroughs
Corey Wood was a week away from her graduation from the University of
California at Berkeley when she started getting flashes in one of her
eyes. Her doctor was concerned and had an inkling that something serious
was going on, so he took the unusual step of ordering a body scan.
Corey was a healthy 22 year old who was tremendously fit and who had
already completed eight marathons. Yet, stunningly, her tests revealed
that she had stage IV lung cancer. The flashing of light she was
experiencing was caused by a tumor behind her eye. But the disease was
also in her lungs where there were multiple tumors and the disease had
rapidly metastasized to her bones. Her prognosis wasn’t very good.
However, a sample of her tumor was sent to Foundation Medicine for genomic analysis and it was found that her cancer was being driven by an ROS-1 genetic alteration. Fortunately, a drug had been recently approved to treat this very type of cancer – Pfizer’s Xalkori (crizotinib). Xalkori is one of the new generation of drugs called targeted therapies, drugs specifically designed to treat Corey’s ROS-1 driven cancer in a way that does not cause the concomitant horrific side effects associated with traditional chemotherapy. After taking two Xalkori pills a day for three months, all the while going about her normal activities, Corey was cancer free.
Corey shared her inspirational story yesterday at the Forbes Healthcare Summit held in New York City. The eradication of her disease shows the power of the tools available to treat cancer that were thought of as science fiction just a decade ago, such as whole body scanning, genomic analysis of her tumor, and having a targeted drug available in the pharmacy to eradicate her disease. This approach to treating cancer is only going to get better. There are hundreds of targeted therapies in development in the pipelines of dozens of biopharmaceutical companies. There are other breakthroughs being made as well, particularly in the exploding field of immuno-oncology where drugs such as Yervoy (Bristol-Myers Squibb) and Keytruda (Merck) are helping to stimulate a cancer patient’s immune system to fight the cancer. These are incredibly exciting times.
After Corey’s talk, Forbes’ Matt Herper led a panel discussion with Peter Bach (Memorial Sloan Kettering Cancer Center), Bob Hugin (CEO, Celgene CELG +0.41%), Richard Klausner (CMO, Illumina ILMN -1.42%), and Sandra Swain (Medical Director, Washington Cancer Institute). The session tried to answer the question “Are we at a tipping point for cancer and are we on the doorstep of vanquishing this disease?” This was a great discussion about changing treatment paradigms, access to healthcare, and emerging science. But Bach brought the group to the key issue facing oncology – the costs of treatment. Yervoy and Keytruda are great drugs, but they cost $120,000 and $150,000 per year, respectively. Furthermore, these drugs are not going to be used as stand-alone agents. Rather they will be used in combination with other drugs such as targeted therapies.
The good news is in the not too distant future, a cancer diagnosis will not be a death sentence. Rather, this will be a treatable condition controlled by taking a combination of these breakthrough therapies. However, people may require a combination of these therapies for the rest of their lives. Imagine millions of people needing a cocktail of three drugs, each of which costs $100,000/year/patient. It doesn’t take major economic analyses to realize that the costs inflicted on the healthcare system will not be sustainable in such a scenario
However, a sample of her tumor was sent to Foundation Medicine for genomic analysis and it was found that her cancer was being driven by an ROS-1 genetic alteration. Fortunately, a drug had been recently approved to treat this very type of cancer – Pfizer’s Xalkori (crizotinib). Xalkori is one of the new generation of drugs called targeted therapies, drugs specifically designed to treat Corey’s ROS-1 driven cancer in a way that does not cause the concomitant horrific side effects associated with traditional chemotherapy. After taking two Xalkori pills a day for three months, all the while going about her normal activities, Corey was cancer free.
Corey shared her inspirational story yesterday at the Forbes Healthcare Summit held in New York City. The eradication of her disease shows the power of the tools available to treat cancer that were thought of as science fiction just a decade ago, such as whole body scanning, genomic analysis of her tumor, and having a targeted drug available in the pharmacy to eradicate her disease. This approach to treating cancer is only going to get better. There are hundreds of targeted therapies in development in the pipelines of dozens of biopharmaceutical companies. There are other breakthroughs being made as well, particularly in the exploding field of immuno-oncology where drugs such as Yervoy (Bristol-Myers Squibb) and Keytruda (Merck) are helping to stimulate a cancer patient’s immune system to fight the cancer. These are incredibly exciting times.
After Corey’s talk, Forbes’ Matt Herper led a panel discussion with Peter Bach (Memorial Sloan Kettering Cancer Center), Bob Hugin (CEO, Celgene CELG +0.41%), Richard Klausner (CMO, Illumina ILMN -1.42%), and Sandra Swain (Medical Director, Washington Cancer Institute). The session tried to answer the question “Are we at a tipping point for cancer and are we on the doorstep of vanquishing this disease?” This was a great discussion about changing treatment paradigms, access to healthcare, and emerging science. But Bach brought the group to the key issue facing oncology – the costs of treatment. Yervoy and Keytruda are great drugs, but they cost $120,000 and $150,000 per year, respectively. Furthermore, these drugs are not going to be used as stand-alone agents. Rather they will be used in combination with other drugs such as targeted therapies.
The good news is in the not too distant future, a cancer diagnosis will not be a death sentence. Rather, this will be a treatable condition controlled by taking a combination of these breakthrough therapies. However, people may require a combination of these therapies for the rest of their lives. Imagine millions of people needing a cocktail of three drugs, each of which costs $100,000/year/patient. It doesn’t take major economic analyses to realize that the costs inflicted on the healthcare system will not be sustainable in such a scenario
Monday, December 8, 2014
On Targeted Therapies for Cancer
It has only been recently that the understanding of the atlas, the periodic
table of changes that are resident within cancer cells, the spectrum of
mutations that occur in various cancers, be it breast, prostate or
colon. Without knowledge of that periodic table, without knowledge of
the genes that are aberrant in those cancers, it’s very difficult to
treat those cancers with therapies that are squarely against impacting
that specific cancer. If we could have an understanding of those genetic mutations then we would
be able to develop targeted therapies for those cancers, and have those
cancers elicit more durable responses for patients with the disease. The
approach that has been taken for decades, is one of a more general approach to
cancer, that involves chemotherapy, radiation and surgery, which have
made a huge impact on the cancer problem, but we’re now at the threshold
of a time where we can begin to understand exactly what’s wrong in a
person’s cancer and tailor the therapies.
A possible Vaccine for Cancer ?
The vaccine that is being referred to is for a particular type of
breast cancer called HER2-positive breast cancer. So there‘s a receptor
that drives that disease and the drug Herceptin is used for those
patients so that drug plus surgery and radiation has led to significant
improvement in survival, but there are still some patients that recur
and ultimately succumb to the disease. Elizabeth Mittendorf, who led a
trial at MD Anderson Cancer Center, asked the question: "After treatment
if we were to give those patients several rounds of this vaccine, which
has this abnormal HER2 protein packaged in it, would we reduce the rate
of recurrence?’ The results were striking. We had a very significant
reduction in the recurrence of rates with about a 50 percent reduction
which will translate into thousands of lives each year with women with
that particular breast cancer."
Friday, December 5, 2014
Manipulating Immune Cells to Fight Cancer is Working!
“It’s not just a handful of patients. It’s an expanding
number at multiple centers,” says Renier Brentjens, MD, PhD, an
oncologist at Memorial Sloan Kettering Cancer Center, who has spent 20
years researching ways to manipulate immune cells to fight cancer.
“That’s often an indication that you’re not looking at a one-patient
thing or a fluke. It really works in this disease.”
Since 2009, researchers at Sloan Kettering, the
University of Pennsylvania, and the National Cancer Institute have tried
this treatment on about 100 patients with ALL. More than 70 have gone
into complete remission. Results like this earned the treatment its
breakthrough status at the FDA.
“This is a very, very bad disease. The 3-year
overall survival after relapse is less than 10%,” Brentjens says. “Most
of the patients that we’ve seen for a 6-month visit after the T-cell
therapy are at or past what their expected survival was when they first
came into our clinic.”
Researchers continue testing modified T-cells in patients with other types of leukemia, lymphoma, and myeloma -- all blood cancers. “The question is: Can we expand this technology to more common tumors? Colon cancer, ovarian cancer, breast cancer,” Brentjens says. Early research in this area says the answer could be “yes."
Thursday, December 4, 2014
Immunotherapy Brings New Hope to Cancer Fight
The treatment, called CAR T-cell therapy, re-engineers a patient’s own immune system to recognize and attack cancer cells. This July, FDA gave CAR T-cell therapy "breakthrough therapy" designation, which fast-tracks its path to FDA approval.
CAR T-cell therapy is a type of immunotherapy, a new wave of experimental and newly approved treatments that spur the immune system
to fight cancer like it does other illnesses. Immunotherapy dominated
talks at this year’s American Society of Clinical Oncology meeting. Some
doctors and scientists are calling it the pathway to a cure. This year
the FDA has approved two more immunotherapy drugs for the treatment of melanoma and chronic lymphocytic leukemia, including pembrolizumab (marketed as Keytruda), which was approved for melanoma last month.
“We are supercharging the immune system”
says Lynn Schuchter, MD, chief of hematology oncology and an
immunotherapy researcher at the University of Pennsylvania. “This brings
a totally new dimension to attacking a cancer cell.”
Wednesday, December 3, 2014
New Vaccine for Breast Cancer
The study, published in Clinical Cancer Research, also suggests the vaccine primes patients' white blood cells to attack tumor cells, slowing down the progression of the cancer.
The new vaccine works by targeting a protein called mammaglobin-A that is predominantly found in breast tissue. Its role in healthy tissue is currently unknown, but previous research has shown that breast tumor cells express the protein at abnormally high levels.
"Being able to target mammaglobin is exciting because it is expressed broadly in up to 80% of breast cancers, but not at meaningful levels in other tissues," says senior author Dr. William Gillanders. "In theory, this means we could treat a large number of breast cancer patients with potentially fewer side effects."
Many pre-existing drug treatments for breast cancer target another protein called human growth factor receptor 2 (HER2). These treatments, including trastuzumab and pertuzumab, can have side effects that include diarrhea and heart problems.
The new vaccine works by targeting a protein called mammaglobin-A that is predominantly found in breast tissue. Its role in healthy tissue is currently unknown, but previous research has shown that breast tumor cells express the protein at abnormally high levels.
"Being able to target mammaglobin is exciting because it is expressed broadly in up to 80% of breast cancers, but not at meaningful levels in other tissues," says senior author Dr. William Gillanders. "In theory, this means we could treat a large number of breast cancer patients with potentially fewer side effects."
Many pre-existing drug treatments for breast cancer target another protein called human growth factor receptor 2 (HER2). These treatments, including trastuzumab and pertuzumab, can have side effects that include diarrhea and heart problems.
Tuesday, December 2, 2014
Bone Marrow, or Stem Cell Transplant alternate names
Transplant - bone marrow; Stem cell transplant; Hematopoietic stem cell
transplant; Reduced intensity, nonmyeloablative transplant; Mini
transplant; Allogenic bone marrow transplant; Autologous bone marrow
transplant; Umbilical cord blood transplant
Outlook (Prognosis) of Stem Cell Transplant
How well you do after transplant depends on:
Complications or failure of the bone marrow transplant can lead to death.
- The type of bone marrow transplant
- How well the donor's cells match yours
- What type of cancer or illness you have
- Your age and overall health
- The type and dosage of chemotherapy or radiation therapy you had before your transplant
- Any complications you may have
Complications or failure of the bone marrow transplant can lead to death.
Monday, December 1, 2014
After the Bone Marrow or Stem Cell Transplant
A bone marrow transplant is usually done in a hospital or medical
center that specializes in such treatment. Most of the time, you stay in
a special bone marrow transplant unit in the center. This is to limit
your chance of getting an infection.
Depending on the treatment and where it is done, all or part of an autologous or allogeneic transplant may be done as an outpatient. This means you do not have to stay in the hospital overnight.
How long you stay in the hospital depends on how much chemotherapy or radiation you received, the type of transplant, and your medical center's procedures. While you are in the hospital, you will be isolated because of the increased risk of infection. The health care team will closely monitor your blood count and vital signs.
While you are in the hospital you may:
Depending on the treatment and where it is done, all or part of an autologous or allogeneic transplant may be done as an outpatient. This means you do not have to stay in the hospital overnight.
How long you stay in the hospital depends on how much chemotherapy or radiation you received, the type of transplant, and your medical center's procedures. While you are in the hospital, you will be isolated because of the increased risk of infection. The health care team will closely monitor your blood count and vital signs.
While you are in the hospital you may:
- Receive medications to prevent or treat infections, including antibiotics, antifungals, and antiviral drugs
- Need many blood transfusions
- Be fed through a vein (IV) until you can eat by mouth and stomach side effects and mouth sores have gone away
- Be given medications to prevent graft-versus-host disease
Wednesday, November 26, 2014
Before the Stem Cell or Bone Marrow Transplant
Your health care provider will ask about your medical history and do a
physical exam. You will have many tests before treatment begins.
Before transplant, you will have one or two tubes, called catheters, inserted into a blood vessel in your neck or arms. This tube allows you to receive treatments, fluids, and sometimes nutrition.
Your doctor or nurse will likely discuss the emotional stress of having a bone marrow transplant. You may want to meet with a mental health counselor. It is important to talk to your family and children to help them understand what to expect.
You will need to make plans to help you prepare for the procedure and handle tasks after your transplant:
Before transplant, you will have one or two tubes, called catheters, inserted into a blood vessel in your neck or arms. This tube allows you to receive treatments, fluids, and sometimes nutrition.
Your doctor or nurse will likely discuss the emotional stress of having a bone marrow transplant. You may want to meet with a mental health counselor. It is important to talk to your family and children to help them understand what to expect.
You will need to make plans to help you prepare for the procedure and handle tasks after your transplant:
- Complete an advance care directive
- Arrange medical leave from work
- Take care of bank or financial statements
- Arrange care of pets
- Arrange for someone to help with household chores
- Confirm health insurance coverage
- Pay bills
- Arrange for care of your children
- Find housing for yourself or your family near the hospital, if needed
Complications of a Bone Marrow Transplant can included
- Anemia
- Bleeding in the lungs, intestines, brain, and other areas of the body
- Cataracts
- Clotting in the small veins of the liver
- Damage to the kidneys, liver, lungs, and heart
- Delayed growth in children who receive a bone marrow transplant
- Early menopause
- Graft failure, which means that the new cells do not settle into the body and start producing stem cells
- Graft-versus-host disease, a condition in which the donor cells attack your own body
- Infections, which can be very serious
- Inflammation and soreness in the mouth, throat, esophagus, and stomach, called mucositis
- Pain
- Stomach problems, including diarrhea, nausea, and vomiting
Tuesday, November 25, 2014
Complications of a Bone Marrow Transplant depend on many things
- The disease you are being treated for
- Whether you had chemotherapy or radiation before the bone marrow transplant and the dosages of such treatments
- Your age
- Your overall health
- How good of a match your donor was
- The type of bone marrow transplant you received (autologous, allogeneic, or umbilical cord blood)
Risks of a Bone Marrow Transplant
A bone marrow transplant may cause the following symptoms:
- Chest pain
- Chills
- Drop in blood pressure
- Fever
- Flushing
- Funny taste in the mouth
- Headache
- Hives
- Nausea
- Pain
- Shortness of breath
Why the Procedure is Performed
A bone marrow transplant replaces bone marrow that either is not
working properly or has been destroyed (ablated) by chemotherapy or
radiation. Doctors believe that for many cancers, the donor's white
blood cells can attach to any remaining cancer cells, similar to when
white cells attach to bacteria or viruses when fighting an infection.
Your doctor may recommend a bone marrow transplant if you have:
Your doctor may recommend a bone marrow transplant if you have:
- Certain cancers, such as leukemia, lymphoma, and multiple myeloma
- A disease that affects the production of bone marrow cells, such as aplastic anemia, congenital neutropenia, severe immunodeficiency syndromes, sickle cell anemia, thalassemia
- Had chemotherapy that destroyed your bone marrow
Thursday, November 20, 2014
Donor stem cells can be collected in two ways
- Bone marrow harvest. This minor surgery is done under general anesthesia. This means the donor will be asleep and pain-free during the procedure. The bone marrow is removed from the back of both hip bones. The amount of marrow removed depends on the weight of the person who is receiving it.
- Leukapheresis. First, the donor is given 5 days of shots to help stem cells move from the bone marrow into the blood. During leukapheresis, blood is removed from the donor through an IV line in a vein. The part of white blood cells that contains stem cells is then separated in a machine and removed to be later given to the recipient. The red blood cells are returned to the donor.
Before the transplant, chemotherapy, radiation, or both may be given
- Ablative (myeloablative) treatment: High-dose chemotherapy, radiation, or both are given to kill any cancer cells. This also kills all healthy bone marrow that remains, and allows new stem cells to grow in the bone marrow.
- Reduced intensity treatment, also called a mini transplant: Patients receive lower doses of chemotherapy and radiation before a transplant. This allows older patients, and those with other health problems to have a transplant.
Wednesday, November 19, 2014
Bone marrow transplants cancer treatment
A bone marrow transplant is a procedure to replace damaged or destroyed bone marrow with healthy bone marrow stem cells.
Bone marrow is the soft, fatty tissue inside your bones. Stem cells are immature cells in the bone marrow that give rise to all of your blood cells.
There are three kinds of bone marrow transplants:
Bone marrow is the soft, fatty tissue inside your bones. Stem cells are immature cells in the bone marrow that give rise to all of your blood cells.
There are three kinds of bone marrow transplants:
- Autologous bone marrow transplant: The term auto means self. Stem cells are removed from you before you receive high-dose chemotherapy or radiation treatment. The stem cells are stored in a freezer (cryopreservation). After high-dose chemotherapy or radiation treatments, your stems cells are put back in your body to make (regenerate) normal blood cells. This is called a rescue transplant.
- Allogeneic bone marrow transplant: The term allo means other. Stem cells are removed from another person, called a donor. Most times, the donor's genes must at least partly match your genes. Special blood tests are done to see if a donor is a good match for you. A brother or sister is most likely to be a good match. Sometimes parents, children, and other relatives are good matches. Donors who are not related to you may be found through national bone marrow registries.
- Umbilical cord blood transplant: This is a type of allogeneic transplant. Stem cells are removed from a newborn baby's umbilical cord right after birth. The stem cells are frozen and stored until they are needed for a transplant. Umbilical cord blood cells are very immature so there is less of a need for matching. But blood counts take much longer to recover.
Tuesday, November 18, 2014
New tool to guide Cancer Care in patients
Researchers must show that the drug
predictions that seem so promising in a dish actually work in patients.
They also will need to deal with technological issues, such as the time
it takes to grow patients’ tumor cells in a dish, between two and six
months in the study, and not every attempt was successful.
“For
decades, literally decades, people have wanted to do patient-specific
chemotherapy sensitivity testing, and it’s been a very hard problem,”
said Dr. James Eshleman, a professor of pathology and oncology at Johns
Hopkins University School of Medicine, who was not involved in the work.
“One problem which is totally counterintuitive is that cancers grow in
patients just fine, but” in a dish, “it’s relatively hard to generate
cell lines, and specific cancers are extraordinarily difficult, largely
for reasons that we don’t understand.”
The
researchers believe that with time, those technological issues can be
resolved. The study used an imperfect source of cells, leftovers taken
from biopsies that had been done for other purposes. If the biopsies
were taken with the idea of growing cells and testing drugs, it is
likely that the process could be quicker and more efficient.
A
far bigger question looms: Sometimes, therapies that seem like a home
run in laboratory tests or even animal models of cancer do not work in
people.
“This is really setting up the
criteria for what we have to look at next,” Schlegel said. “Someone has
to figure out if we grow up these cells, how many times is this going to
be an adequate predictor of patient response?”
Engelman said he already is beginning to work on the answer to that question.
His
team will start by reexamining clinical trials in which patients
received drugs and their responses were known. Researchers will then
grow cells harvested from their tumors in a dish to see whether the
people who had the best responses to the drug also happened to have
cells that were more sensitive to the treatment, as researchers would
expect.
If that work shows promise, it will help provide the evidence needed to begin using the tool to guide cancer care in patients.
Study points to new Direction for Cancer Therapies
In the new study, the researchers started with
55 samples of cancer cells that had developed resistance to a targeted
drug. Nearly half of the cells had been harvested directly from lung
cancer patients whose cancer had returned.
The researchers then used a relatively new
technique to grow those cancer cells in a dish, establishing a
population of cells that could be used to screen for possible
treatments.
Next, the scientists bombarded
those cancer cells with an array of 76 different drugs and watched to
see which ones would be effective. In 45 cases, they found that a novel
drug combination worked; the cancer cells became resensitized to the
initial drug that had stopped working.
Outside
researchers said the study pointed to a future direction for care and
was exciting because some of the drug combinations could not have been
predicted by genetic testing alone. Dr. Richard Schlegel, director of
the Center for Cell Reprogramming at Georgetown University School of
Medicine, said the work was “a mirror into the future” of cancer care.
But significant hurdles still exist before the tool could be used to direct a drug regimen.
Friday, November 14, 2014
Doctors look to personalize Cancer Care
A group of Boston physicians and researchers
has taken a crucial step toward personalized cancer treatment,
identifying novel drug combinations that show promise against cancer
cells that have developed a resistance to therapy.
The
technology is not yet ready for the ultimate test, in which the
promising drug combinations are given directly to patients. However, the
researchers saw tantalizing hints of the potential of the approach when
they grew a handful of the drug-resistant cancers in mice and observed
that in all cases, the new drug regimens were effective at shrinking
tumors.
“You could imagine in the future, maybe the
not-too-distant future, we could start to do this as clinical trials
where we would assign patients to treatments based on the results of
what their cancer cells showed susceptibility to,” said Dr. Jeffrey
Engelman, director of thoracic oncology at Massachusetts General
Hospital, who co-led the work published Thursday in the journal Science.
A revolution in medicine has made genetic testing of tumors almost
routine when selecting treatment for many types of cancer. However,
resistance to targeted therapy almost invariably develops and genetic
clues, though powerful, have not always been sufficient to identify the
best treatment.
That has spurred a range of efforts to
personalize treatment and monitor cancer’s evolution. This summer, a
Mass. General team showed that it was possible to isolate rare tumor cells circulating
in the blood and analyze them to understand how a patient’s cancer was
changing. Other researchers have been working on developing mouse avatars, in which a patient’s tumor is grown in a lab animal in which new therapies can be tested.
A new method using a Patient’s drug-resistant tumor cells to screen for effective Therapies
In collaboration with Cyril Benes, also at Massachusetts
General, Engelman’s team developed a method using a patient’s
drug-resistant tumor cells to screen for effective therapies.
Starting with a tiny amount of tumor tissue from a biopsy, the
scientists grew patient cells in a dish until they had enough to
perform drug screening. They then tested those cells against 76
cancer drugs.
By combining the drug screening and traditional genetic analyses, the team successfully identified treatment combinations that killed cells in 45 of 55 drug-resistant tumor cell lines tested.
The team didn’t use the resulting drug combinations to alter or guide any patient’s treatment regimens, Engelman said. Before that can be done, the method needs to be evaluated in a randomized clinical trial to see whether the drug combinations that kill cancer cells in a dish are similarly effective in patients, he said.
In addition, the team spent months coaxing the patient cells to grow into large enough populations for the drug screening. To be useful to a cancer patient undergoing treatment, that process needs to take weeks, not months.
“What we’ve done is quite modest,” Engelman said. “What’s exciting now is whether we can take it to that next step -- use it to inform how we treat patients.”
By combining the drug screening and traditional genetic analyses, the team successfully identified treatment combinations that killed cells in 45 of 55 drug-resistant tumor cell lines tested.
The team didn’t use the resulting drug combinations to alter or guide any patient’s treatment regimens, Engelman said. Before that can be done, the method needs to be evaluated in a randomized clinical trial to see whether the drug combinations that kill cancer cells in a dish are similarly effective in patients, he said.
In addition, the team spent months coaxing the patient cells to grow into large enough populations for the drug screening. To be useful to a cancer patient undergoing treatment, that process needs to take weeks, not months.
“What we’ve done is quite modest,” Engelman said. “What’s exciting now is whether we can take it to that next step -- use it to inform how we treat patients.”
Thursday, November 13, 2014
New Cancer Technique Outsmarts Cells Resisting Treatment
By directly screening patient cancer
cells, researchers have created a new way to identify potential
treatments to effectively attack drug-resistant tumors.
While the screening system has only been used on tumor cells in a dish and in mice, the method could someday lead to individualized drug treatment strategies that adapt even as a patient’s tumor changes.
“The results have been promising enough where we are looking to see if we can develop this now to direct patient treatments,” said Jeffrey Engelman, a medical oncologist at Massachusetts General Hospital in Boston and co-senior author of the study released online today by the journal Science.
Targeted therapies are drugs that interfere with specific cancer-promoting pathways in tumor cells. They have been more effective than traditional chemotherapy drugs against tumors, though the effect usually lasts only one to two years. Tumors rapidly mutate to use alternate pathways, like back alleys, to bypass the original pathways blocked by the medicines.
To combat that resistance, researchers typically analyze DNA from a biopsy of a drug-resistant tumor to try and identify the resistance-causing mutation, then pick a new drug to block that alternate pathway as well. This approach has met with limited success because most genetic results are ambiguous or don’t directly point to treatment strategies, Engelman said.
While the screening system has only been used on tumor cells in a dish and in mice, the method could someday lead to individualized drug treatment strategies that adapt even as a patient’s tumor changes.
“The results have been promising enough where we are looking to see if we can develop this now to direct patient treatments,” said Jeffrey Engelman, a medical oncologist at Massachusetts General Hospital in Boston and co-senior author of the study released online today by the journal Science.
Targeted therapies are drugs that interfere with specific cancer-promoting pathways in tumor cells. They have been more effective than traditional chemotherapy drugs against tumors, though the effect usually lasts only one to two years. Tumors rapidly mutate to use alternate pathways, like back alleys, to bypass the original pathways blocked by the medicines.
To combat that resistance, researchers typically analyze DNA from a biopsy of a drug-resistant tumor to try and identify the resistance-causing mutation, then pick a new drug to block that alternate pathway as well. This approach has met with limited success because most genetic results are ambiguous or don’t directly point to treatment strategies, Engelman said.
Wednesday, November 12, 2014
Is it better to get Cancer Therapy at night?
“The study developed out of a mistake. We accidentally omitted a
synthetic steroid…from the medium in which we routinely grow mammary
gland cells,” “And we noticed
that the cells acquired a faster rate of migration when we followed
them under a microscope.”
Intrigued, they turned to mice to answer some more questions. Knowing that steroid levels peak during the day and drop off during sleep, Yarden and his colleagues wondered whether the timing of anti-tumor drugs would affect tumor growth. So they gave a group of mice with breast cancer tumors lapatinib at different times over a 24-hour period and tracked any differences in the size and growth of the tumors.
Indeed, the mice given the drug while they slept showed significantly smaller tumors after seven days than those who received the drug during the day. Yarden suspects that the lower levels of steroid hormones circulating at night allows more of the EGF-targeting drug to hone in on its receptors on the tumor cells and inhibit their growth. Not only that, but the tumors in the mice taking the drug at night looked different; they showed less blood vessel infiltration which meant they were less robust.
Does that mean it’s better to get cancer therapy at night? So far, the results only apply to animal models, and to cancers driven by EGF. More work needs to be done, but if it’s validated, shifting therapies to just before bed “seems logical,” says Yarden. Especially since drugs like lapatinib come in pill form, so it would be relatively easy to take medications before turning in rather than in the morning.
Intrigued, they turned to mice to answer some more questions. Knowing that steroid levels peak during the day and drop off during sleep, Yarden and his colleagues wondered whether the timing of anti-tumor drugs would affect tumor growth. So they gave a group of mice with breast cancer tumors lapatinib at different times over a 24-hour period and tracked any differences in the size and growth of the tumors.
Indeed, the mice given the drug while they slept showed significantly smaller tumors after seven days than those who received the drug during the day. Yarden suspects that the lower levels of steroid hormones circulating at night allows more of the EGF-targeting drug to hone in on its receptors on the tumor cells and inhibit their growth. Not only that, but the tumors in the mice taking the drug at night looked different; they showed less blood vessel infiltration which meant they were less robust.
Does that mean it’s better to get cancer therapy at night? So far, the results only apply to animal models, and to cancers driven by EGF. More work needs to be done, but if it’s validated, shifting therapies to just before bed “seems logical,” says Yarden. Especially since drugs like lapatinib come in pill form, so it would be relatively easy to take medications before turning in rather than in the morning.
Tuesday, November 11, 2014
The body doesn't process drugs in the same way throughout the day
It’s news to no one that your body works differently when you’re
awake and when you’re sleeping. But could the different states also
affect how your body processes certain life-saving drugs? Researchers,
reporting Friday in the journal Nature Communications, found that when it comes to cancer drugs, the answer may be yes.
Researchers at the Weizmann Institute of Science discovered—by happy accident—that some of the body’s molecular functions during the day may interfere with the effectiveness of certain cancer medication. Specifically, they found that the normal day-time production of some steroid hormones in the body actually inhibited the work of epidermal growth factor (EGF) receptors—which are the proteins targeted by a class of anti-cancer drugs. Tumor cells plant these receptors on their surfaces to attract nutrients that help them survive and grow. Drugs, including the breast cancer agent lapatinib, can block these receptors on tumors, and such medications are a popular way to treat breast cancers expressing epidermal growth factor.
But Yosef Yarden, a professor in the department of biological regulation, and his team found that when the tumor cells simultaneously bind to something else—such as steroid hormones—the EGF receptors are less active, making drugs like lapatinib less potent.
The findings are still preliminary, but there is other evidence that the day-night cycle may be a potentially important factor in determining cancer treatment dosing in coming years. Some studies showed, for example, that when the 24-hour rest and activity cycle is broken metabolically, and the EGF receptors aren’t given enough time to be active, certain tumors in animals grow two to three times faster.
Researchers at the Weizmann Institute of Science discovered—by happy accident—that some of the body’s molecular functions during the day may interfere with the effectiveness of certain cancer medication. Specifically, they found that the normal day-time production of some steroid hormones in the body actually inhibited the work of epidermal growth factor (EGF) receptors—which are the proteins targeted by a class of anti-cancer drugs. Tumor cells plant these receptors on their surfaces to attract nutrients that help them survive and grow. Drugs, including the breast cancer agent lapatinib, can block these receptors on tumors, and such medications are a popular way to treat breast cancers expressing epidermal growth factor.
But Yosef Yarden, a professor in the department of biological regulation, and his team found that when the tumor cells simultaneously bind to something else—such as steroid hormones—the EGF receptors are less active, making drugs like lapatinib less potent.
The findings are still preliminary, but there is other evidence that the day-night cycle may be a potentially important factor in determining cancer treatment dosing in coming years. Some studies showed, for example, that when the 24-hour rest and activity cycle is broken metabolically, and the EGF receptors aren’t given enough time to be active, certain tumors in animals grow two to three times faster.
Monday, November 10, 2014
Why Cancer Drugs May Work Better While You Sleep
The combination, he says, may be more effective since one drug works
to suss out tumor cells, like shining a molecular spotlight on them,
while the other builds up the body’s defenses against them, allowing
immune cells to better target and eliminate cancers.
The time that both groups of patients enjoyed before their melanoma recurred, however, was similar. But Hodi and his team note that the inflammation caused as a side effect of the drugs could be interpreted as early tumor sites, leading researchers to record the presence of tumors that may not be there.
Teasing apart that issue and determining the safe and optimal doses of the combination will require more studies, says Hodi. The dose of ipilimumab he used, for example, was higher than the one approved by the FDA in 2011, since this study was begun before the agency approved the drug. But the idea that a combination of powerful immune-based drugs could help cancer patients fight their disease and survive longer is encouraging. “This world of [new cancer treatments] is moving fast, and there are a slew of possible combinations that others are studying now,” he says. “It’s where the future of cancer therapy will be.”
The time that both groups of patients enjoyed before their melanoma recurred, however, was similar. But Hodi and his team note that the inflammation caused as a side effect of the drugs could be interpreted as early tumor sites, leading researchers to record the presence of tumors that may not be there.
Teasing apart that issue and determining the safe and optimal doses of the combination will require more studies, says Hodi. The dose of ipilimumab he used, for example, was higher than the one approved by the FDA in 2011, since this study was begun before the agency approved the drug. But the idea that a combination of powerful immune-based drugs could help cancer patients fight their disease and survive longer is encouraging. “This world of [new cancer treatments] is moving fast, and there are a slew of possible combinations that others are studying now,” he says. “It’s where the future of cancer therapy will be.”
Friday, November 7, 2014
Promising New Cancer Treatment Uses Immune Cells
Cancer researchers are pumping out study after study trying to figure
out how best to use the body’s own immune system to fight cancer
tumors.
Scientists led by Dr. F. Stephen Hodi at Dana Farber Cancer Institute show for the first time that combining two drugs that target the immune system in different ways could help melanoma patients survive longer. From 2010 to 2011, 245 patients with advanced skin cancer who had not responded to at least one previous treatment were randomly assigned to get a newly approved drug, ipilimumab, designed to help the immune system better target tumors, either alone or in combination with another drug. Ipilimumab (marketed as Yervoy), was among the first anti-cancer medications that allows immune cells to “see” tumors better; since tumors grow from originally normal cells, the immune system often gives them a pass and doesn’t attack them as foreign. But drugs like ipilimumab, called checkpoint blockade inhibitors, help immune cells to look past cancer’s disguise and target abnormally growing tumors.
In the study, those who received the combination of ipilimumab and sargramostim, another drug that gives the immune system a laser-like focus on the proteins found on tumors, survived an average of 17.5 months after the study began, compared to 12.7 months for those who took ipilimumab alone. At the end of a year, nearly 70% of those receiving the combination were alive, while 53% of those in the ipilimumab alone group were.
“We show that the combination improves survival, and at the same time decreases side effects,” says Hodi. The patients receiving the two drugs reported fewer gut and respiratory complications, two of the organ systems most affected by checkpoint inhibitor drugs like ipilimumab.
Scientists led by Dr. F. Stephen Hodi at Dana Farber Cancer Institute show for the first time that combining two drugs that target the immune system in different ways could help melanoma patients survive longer. From 2010 to 2011, 245 patients with advanced skin cancer who had not responded to at least one previous treatment were randomly assigned to get a newly approved drug, ipilimumab, designed to help the immune system better target tumors, either alone or in combination with another drug. Ipilimumab (marketed as Yervoy), was among the first anti-cancer medications that allows immune cells to “see” tumors better; since tumors grow from originally normal cells, the immune system often gives them a pass and doesn’t attack them as foreign. But drugs like ipilimumab, called checkpoint blockade inhibitors, help immune cells to look past cancer’s disguise and target abnormally growing tumors.
In the study, those who received the combination of ipilimumab and sargramostim, another drug that gives the immune system a laser-like focus on the proteins found on tumors, survived an average of 17.5 months after the study began, compared to 12.7 months for those who took ipilimumab alone. At the end of a year, nearly 70% of those receiving the combination were alive, while 53% of those in the ipilimumab alone group were.
“We show that the combination improves survival, and at the same time decreases side effects,” says Hodi. The patients receiving the two drugs reported fewer gut and respiratory complications, two of the organ systems most affected by checkpoint inhibitor drugs like ipilimumab.
Thursday, November 6, 2014
Scalability and cost,Pfizer's reason for different approach
“We would like to take it to the next level, where CAR therapies become a more standardized, highly controlled treatment,” said
Mikael Dolsten,
Pfizer’s head of global research and development.
Working with French biotech
Cellectis SA,
ALCLS.FR -2.65%
Pfizer wants to develop a generic CAR therapy for use in any
patient, potentially lowering its cost. But its research is still
preclinical, and may not work in humans.
Stephen McGarry,
global head of health-care research at Société Générale, agrees
the treatments being developed by Novartis and Juno could justify
“astronomical” prices, although he thinks health-care payers and
patients might fight back.
“When you
look at the initial data with the Novartis therapy, you’re getting cures
in some kids—what do you charge for that?” he asks
Juno-backed Sloan-Kettering trial, recruiting patients!
There are still big unanswered questions about CAR therapies: one is how long they last.
That
is hard to tell because of the small numbers of patients treated so
far, and because many of those whose cancer went into remission after
the CAR therapies subsequently became eligible for stem-cell
transplants which can themselves prolong survival.
Another
concern is a potentially dangerous side effect called “cytokine-release
syndrome,” an immune response which shows the therapy is working, but
which can cause a sharp drop in blood pressure and surge in the heart
rate.
The deaths of two patients in a
Juno-backed Sloan-Kettering trial in March caused a temporary halt in
the study because of worries over these immune responses.
“Patients
need to be healthy enough to combat that side effect,” says Mr. Bishop,
who thinks it is now manageable. The trial is recruiting patients
again, excluding those with a risk of heart failure, and giving those
with very advanced leukemia fewer modified cells.
Tuesday, November 4, 2014
New Costly Cancer Treatments Face Hurdles Getting to Patients
But the biggest hurdle yet may be the cost of the therapies.
The
genetic engineering involved means CAR therapies are very complex to
manufacture, and each is a unique personalized treatment using a
patient’s own blood cells. The inability to mass-produce them has likely
implications for how much companies will charge for them.
“What
we’re talking about here is a single, very expensive therapy that’s
used once for a specific patient and is not generalizable,” says Dr.
Malcolm Brenner,
director of the Center for Cell and Gene Therapy at the Texas
Children’s Hospital in Houston.
Dr. Brenner signed a deal in March to commercialize his own CAR research with Celgene.
Novartis
and Juno say it is too early to speculate on price, although Dr. Usman
agrees the challenge is getting the manufacturing process to “a viable
level where it’s both affordable and attractive.”
While
most analysts think it is too early to estimate potential revenue or
price, Citigroup believes CAR therapies could cost in excess of $500,000
per patient, which it notes is roughly in line with the cost of a stem
cell transplant.
“This technology needs
to be widely developed and accessible to patients,” says Dr. DeAngelo.
“If the cost is going to be a hindrance, it’s going to be a really sad
day.”
Novartis, Juno Conduct New Studies on Leukemia Therapies
Cancer treatments that genetically modify
patients’ blood cells to target the disease have shown amazing results
in clinical trials. Now drug companies and biotechs must overcome big
hurdles to get them into hospitals, including their potential cost.
In two separate clinical trials—sponsored by
Novartis AG
NOVN.VX -0.51%
of Switzerland and Seattle-based biotech Juno Therapeutics
Inc.—almost 90% of patients saw their leukemia disappear after being
given experimental so-called CAR T-cell therapies. The results were
published in December and February, respectively.
Both
trials were in small numbers of patients: 22 children in the Novartis
trial and 16 adults in the Juno trial. The patients had acute
lymphoblastic leukemia—the most common childhood cancer—and had
exhausted standard treatments. Both companies are now conducting larger
trials.
“CAR T cells are probably one of
the most exciting concepts and fields to come out in cancer in a very,
very long time,” says
Dr. Daniel DeAngelo,
a Boston-based hematologist and associate professor of medicine
at Harvard Medical School, who wasn’t involved in either study.
Usman Azam,
head of cell and gene therapies at Novartis, calls the therapies
“critically important” for Novartis. “I think that a cure for cancers
such as leukemia and lymphoma through a CAR technology is plausible,”
said Dr. Azam in an interview with The Wall Street Journal. “Our job is
to get this into patients as soon as we feasibly can.”
Friday, October 31, 2014
New cancer treatment which reprograms cells to self-destruct gives hope for lung patients
A new treatment for cancer which kills cancerous cells and leaves healthy ones untouched could revolutionise treatment, scientists have claimed.
Unlike healthy cells, which eventually self destruct once no longer useful, cancer cells dodge this suicide path.
Instead the cells grow out of control, causing tumours to form.
The scientists, based at the UCL Cancer Institute, believe they have fixed this fault in lung cancer cells, by reprogramming the cells to self destruct.
Through using lung cancer cells and mice, the scientists showed that the combination of two drugs, TRAIL and a CDK9 inhibitor, changed the molecular modifications in the cell suicide process, forcing the cancer cells to self-destruct.
This new drug combination, which will be presented at the National Cancer Research Institute (NCRI) Cancer Conference in Liverpool next week, could pave the way for new treatments.
However the researchers stressed that the drug combination is in early stage development, to potentially treat non small cell lung cancer.
Nell Barrie, senior science information manager at Cancer Research UK, added: "This important research builds on the progress we've made to understand the routes cancer cells use to stay alive.
"Understanding and targeting these processes will move us closer to our goal of three out of four people beating cancer within the next 20 years.
"There's an urgent need to save more lives from lung cancer and we hope these findings will one day lead to effective new treatments to help lung cancer patients and potentially those with other cancer types too."
Unlike healthy cells, which eventually self destruct once no longer useful, cancer cells dodge this suicide path.
Instead the cells grow out of control, causing tumours to form.
The scientists, based at the UCL Cancer Institute, believe they have fixed this fault in lung cancer cells, by reprogramming the cells to self destruct.
Through using lung cancer cells and mice, the scientists showed that the combination of two drugs, TRAIL and a CDK9 inhibitor, changed the molecular modifications in the cell suicide process, forcing the cancer cells to self-destruct.
This new drug combination, which will be presented at the National Cancer Research Institute (NCRI) Cancer Conference in Liverpool next week, could pave the way for new treatments.
However the researchers stressed that the drug combination is in early stage development, to potentially treat non small cell lung cancer.
Nell Barrie, senior science information manager at Cancer Research UK, added: "This important research builds on the progress we've made to understand the routes cancer cells use to stay alive.
"Understanding and targeting these processes will move us closer to our goal of three out of four people beating cancer within the next 20 years.
"There's an urgent need to save more lives from lung cancer and we hope these findings will one day lead to effective new treatments to help lung cancer patients and potentially those with other cancer types too."
Thursday, October 30, 2014
Breast Cancer and Chemotherapy
When it comes to responding to chemotherapy, not all
breast cancers are created equal. So far, doctors have not been able to
accurately predict which women would derive added benefits from
chemotherapy and which ones wouldn't. So the policy has often been,
"When in doubt, get chemotherapy."
Now,
studies show that a new genetic test, known as the Oncotype DX 21-gene
assay, not only assesses the likelihood of breast cancer recurrence for
many early-stage breast cancer patients, but also predicts how much
chemotherapy will help these women. This new test may give some low-risk
women the option of skipping the rigors of chemotherapy, while
reassuring others that the often-difficult treatment they're receiving
has a clearly defined benefit.
For women who have
hormone-positive breast cancer that has not yet spread to the lymph
nodes, the Oncotype assay analyzes 21 genes related to breast cancer in
the body that breast cancer cells depend on, including the estrogen
receptor, HER2 and proliferation genes. It then divides the results into
low-, medium-, and high-risk scores.
Women in the
low-risk group, about half the patients studied, would get only a
minimal, if any, benefit from chemotherapy. Women in the high-risk group
would be very likely to benefit from chemotherapy.
Wednesday, October 29, 2014
Herceptin Clinical Trials for Breast Cancer
Four large-scale, randomized clinical trials are now
under way to better identify the benefits and risks of Herceptin. "It's
very likely that Herceptin will be an effective therapy in early-stage
disease, based on what we've seen in metastatic breast cancer," says
Sloan-Kettering's Hudis. "But what's not so clear yet is how big an
impact it will have on survival and recurrence rates, and what the price
might be for a broad population in terms of heart failure. If we
improve survival rates by 2%, but it causes 4% of patients to have
significant heart failure, then you'd have a hard time figuring out what
to do next."
In the small group of study patients at
M.D. Anderson who received Herceptin, says Buzdar, none so far has
developed any heart problems almost two years after treatment. Some
doctors have prescribed Herceptin "off-label" for women with
non-metastatic breast cancer, but both Hudis and Isaacs are cautious.
They recommend women with early-stage breast cancer only take Herceptin
if they are in a clinical trial until more questions are answered about
the drug's risks and benefits.
Tuesday, October 28, 2014
Herceptin in the Treatment for Breast Cancer
For several years, the drug Herceptin has been used to
treat women with HER2-positive breast cancer that has metastasized or
recurred. It's a kind of drug known as a monoclonal antibody. It works
like a heat-seeking missile, homing in on cells that make too much
HER2neu protein. Used either with chemotherapy or alone, Herceptin can
reduce tumor size and increase a woman's chances of both overall
survival and disease-free survival.
But
the trials that led to Herceptin's FDA approval were all in women with
advanced breast cancer. Would Herceptin work as well in women with
early-stage disease? Within the last year, promising research has
indicates the answer may be yes.
In a study released
last June, scientists at the University of Texas M.D. Anderson Cancer
Center in Houston looked at women with early-stage, HER2-positive breast
disease. They found that more than twice as many women who received
Herceptin as part of their presurgical chemotherapy had their tumors
completely disappear compared with women who received chemotherapy
alone. Indeed, the results were so striking that the researchers stopped
the study early, after enrolling only 42 of a planned 164 patients.
"More
than 65% of the Herceptin patients had a complete response rate, as
compared with only 26% of patients who received chemotherapy only," says
Aman Buzdar, MD, deputy chair of the department of breast and medical
oncology at the M.D. Anderson Cancer Center.
So why
hasn't Herceptin been approved for use in early-stage HER2-positive
breast cancer yet? First, because of the relatively small size of the
trial, and second, because of concerns about its side effects. In a
small percentage of patients, Herceptin can cause heart damage and
sometimes even heart failure.
Monday, October 27, 2014
Aromatase Inhibitors
Aromatase inhibitors aren't new. The FDA approved the
first, Arimidex, in September 2000. Many large trials have recently
confirmed that these hormone therapies outperform the more commonly used
tamoxifen to prevent tumor recurrence in women who had hormone-positive
breast cancers (cancers that are fed by estrogen).
Because
they act only on estrogen that's produced outside the ovaries,
aromatase inhibitors are only effective in postmenopausal women. (Before
menopause, most of the body's estrogen is produced in the ovaries.) But
for these women, Arimidex and its sister drugs, like Aromasin and
Femara, offer a small but crucial advantage over tamoxifen -- 4% to 5%
-- in preventing cancer recurrence. Researchers still don't know which
strategy works best: taking an aromatase inhibitor instead of tamoxifen,
as the first course of therapy after surgery for breast cancer (called
adjuvant therapy) or beginning treatment with tamoxifen and switching to
an aromatase inhibitor after two to five years.
Other factors involved with Abraxane
Another factor could be involved. Because albumin, which normally
transports nutrients to cells, accumulates in rapidly growing tumors,
it's possible that the bundles of Abraxane in their albumin "envelopes"
are sent by express delivery directly to cancer cells. "There are signs
indicating that albumin receptors in breast cancer and other cancer
cells would preferentially pick up these albumin-bound packets."
If so, that may have exciting implications for other
chemotherapy drugs used in breast and other cancers, says Claudine
Isaacs, MD, director of the Clinical Breast Cancer Program at the
Lombardi Comprehensive Cancer Center at Georgetown University Medical
Center in Washington, D.C. "This delivery system probably will not be
limited to paclitaxel. Theoretically, you could put any number of
chemotherapy drugs in these packets, not just paclitaxel." And years of
experience with chemotherapy show that delivery matters. "The same drug
can have a very different side effect profile, as well as potentially
different benefits and response rates, based on how it's delivered."
So
far, Abraxane has only been FDA-approved for use in patients with
breast cancer that has recurred or metastasized. Still, many drugs that
are first approved for use in this stage of the disease later prove to
be effective for women with earlier-stage breast cancer.
Friday, October 24, 2014
New Treatments for Breast Cancer
Paclitaxel, commonly marketed as Taxol or Taxotere, is
part of many chemotherapy drug regimens, but it has one big problem,
says Clifford Hudis, chief of the Breast Cancer Medicine Service at New
York's Memorial Sloan-Kettering Cancer Center. "It doesn't dissolve in
water, which means we have to put the drugs in solvents to deliver them
to patients." Those solvents can cause a number of side effects,
including severe allergic reactions. Patients taking paclitaxel have to
receive heavy doses of other medications first, such as steroids and
antihistamines, before getting their chemotherapy.
Abraxane
does a neat end run around that problem. A process called protein-bound
nanoparticle technology creates tiny particles that bind the paclitaxel
to a naturally occurring protein called albumin. "The binding makes
little packets of paclitaxel, think of them as little bubbles, that
can be dissolved in water," says Hudis. This means no more solvent,
which in turn means no more medications before chemotherapy, and no more
of the side effects that go along with them. It's also shortened the
chemotherapy's infusion time from more than three hours to around half
an hour.
These practical pluses would be enough to
make anyone receiving chemotherapy rejoice. But there may also be a
bonus in terms of the drug's effectiveness. In one of the major clinical
trials that led to Abraxane's FDA approval, women who got this drug had
almost twice the response rate to chemotherapy compared with women who
received regular Taxol. This may be in part because without the need for
solvents, higher doses of paclitaxel could be delivered to the women
getting Abraxane.
Thursday, October 23, 2014
New Iridium- based Drug for Chemo Therapies
"Platinum-based drugs are used in nearly 50% of all chemotherapeutic
regimens, exert their activity by damaging DNA and cannot select between
cancerous and non-cancerous cells, leading to a wide-range of
side-effects from renal failure to neurotoxicity, ototoxicity, nausea
and vomiting.
"In contrast, the new iridium-based drug is specifically designed not to attack DNA, but to have a novel mechanism of action, meaning that it could not only dramatically slow down and halt cancer growth, but also significantly reduce the side effects suffered by patients" argues Professor Sadler.
This research could also lead to substantial improvements in cancer survival rates. "Current statistics indicate that one in every three people will develop some kind of cancer during their life time, moreover approximately one woman dies of ovarian cancer every two hours in the UK according to Cancer Research UK .It is clear that a new generation of drugs is necessary to save more lives and our research points to a highly effective way of defeating cancerous cells" said Dr Romero-Canelon.
"In contrast, the new iridium-based drug is specifically designed not to attack DNA, but to have a novel mechanism of action, meaning that it could not only dramatically slow down and halt cancer growth, but also significantly reduce the side effects suffered by patients" argues Professor Sadler.
This research could also lead to substantial improvements in cancer survival rates. "Current statistics indicate that one in every three people will develop some kind of cancer during their life time, moreover approximately one woman dies of ovarian cancer every two hours in the UK according to Cancer Research UK .It is clear that a new generation of drugs is necessary to save more lives and our research points to a highly effective way of defeating cancerous cells" said Dr Romero-Canelon.
Wednesday, October 22, 2014
Cancer treatment revolution potential with new drug
A new study at the University of Warwick, published in the journal Angewandte Chemie International Edition,
has developed a new drug that can manipulate the body's natural
signalling and energy systems, allowing the body to attack and shut down
cancerous cells.
Called ZL105, the drug is a compound based on the precious metal iridium. The study has found ZL105 could potentially replace currently used anticancer drugs, which become less effective over time, cause a wide-range of side-effects and damage healthy cells as well as cancerous.
Commenting on the breakthrough, University of Warwick researcher and study co-author Dr Isolda Romero-Canelon said "The energy-producing machinery in cancer cells works to the limit as it attempts to keep up with quick proliferation and invasion. This makes cancer cells susceptible to minor changes in the cell 'power-house'. Our drug pushes cancer cells over the limit causing them to slow and shut down, whilst normal cells can cope with its effects."
Preliminary data indicate that the novel drug may be ten times more effective in treating ovarian, colon, melanoma, renal, and some breast cancers, according to data obtained by the US National Cancer Institute. The researchers now aim to expand the study to cancers that are inherently resistant to existing drugs and to those which have developed resistance after a first round of chemotherapy treatments.
Study co-author Professor Peter J. Sadler said "Existing cancer treatments often become less effective after the first course, as cancer cells learn how they are being attacked. The drug we have developed is a catalyst and is active at low doses. It can attack cancer cells in multiple ways at the same time, so the cancer is less able to adapt to the treatment. This means the new drugs could be much more effective than existing treatments."
Called ZL105, the drug is a compound based on the precious metal iridium. The study has found ZL105 could potentially replace currently used anticancer drugs, which become less effective over time, cause a wide-range of side-effects and damage healthy cells as well as cancerous.
Commenting on the breakthrough, University of Warwick researcher and study co-author Dr Isolda Romero-Canelon said "The energy-producing machinery in cancer cells works to the limit as it attempts to keep up with quick proliferation and invasion. This makes cancer cells susceptible to minor changes in the cell 'power-house'. Our drug pushes cancer cells over the limit causing them to slow and shut down, whilst normal cells can cope with its effects."
Preliminary data indicate that the novel drug may be ten times more effective in treating ovarian, colon, melanoma, renal, and some breast cancers, according to data obtained by the US National Cancer Institute. The researchers now aim to expand the study to cancers that are inherently resistant to existing drugs and to those which have developed resistance after a first round of chemotherapy treatments.
Study co-author Professor Peter J. Sadler said "Existing cancer treatments often become less effective after the first course, as cancer cells learn how they are being attacked. The drug we have developed is a catalyst and is active at low doses. It can attack cancer cells in multiple ways at the same time, so the cancer is less able to adapt to the treatment. This means the new drugs could be much more effective than existing treatments."
Tuesday, October 21, 2014
Novartis, Juno Conduct New Studies on Leukemia Therapies
“CAR T cells are probably one of the most
exciting concepts and fields to come out in cancer in a very, very long
time,” says
Dr. Daniel DeAngelo,
a Boston-based hematologist and associate professor of medicine
at Harvard Medical School.
Usman Azam,
head of cell and gene therapies at Novartis, calls the therapies
“critically important” for Novartis. “I think that a cure for cancers
such as leukemia and lymphoma through a CAR technology is plausible,”
said Dr. Azam . “Our job is
to get this into patients as soon as we feasibly can.”
Dr. Azam heads a new unit Novartis created
partly to speed the therapies’ time to market. Its leading CAR therapy
was granted ‘breakthrough’ designation by the U.S. Food and Drug
Administration in July, and Novartis wants to file it with regulators in
2016.
CAR therapies are a mixture of
genetic tweaking and “immunotherapy,” or using the patient’s own immune
system to fight disease. They involve extracting disease-fighting white
blood cells called T-cells from a patient’s blood. The T-cells are then
genetically modified, grown in a laboratory for around 10 days and
reinjected into the patient.
Typically,
the T-cells are combined with a disabled virus, which enables them to
produce chimeric antigen receptors, or CARs, that recognize and target
malignant proteins on a cancer cell’s surface.
Novartis
and Juno are developing their treatments in partnership with top
academic teams: Novartis with the University of Pennsylvania and Juno
with teams at Memorial Sloan-Kettering Cancer Center in New York,
Seattle Children’s Hospital and the Fred Hutchinson Cancer Research
Center, also in Seattle.
Monday, October 20, 2014
Doctors Excited by New Cancer Treatment
“Molecularly Targeted Therapy.” The treatment
consists of drugs designed at the molecular level of the cell to
specifically attack and kill only the cancer cells of a specific type of
cancer. And they are tailor-made to recognize specific molecules unique
to specific cancers.
The model drug leading the way is Glivec, also known as STI571. It is
active against a relatively rare form of leukemia, chronic myeloid
leukemia, or CML characterized by excessive overproduction of white
blood cells. Approximately 7,000 Americans are diagnosed with CML each
year.
Doctors are extremely hopeful that the drug could provide a model for
similar drugs to treat cancers affecting many thousands more people.
This year, alone, some 1.3 million Americans will be diagnosed with
cancer.
“This is as important as it gets. A cancer-specific target, a drug
specifically designed for the target, the most effective agent
ever,”says Paul A. Bunn Jr., president-elect of the American Society of
Clinical Oncology. “Read my lips, this is real, not mice.”
Dr. Brian Druker, director of the Leukemia Program at the Oregon Health
Sciences University in Portland, is the main researcher on the drug,
which is being developed by Novartis Pharmaceuticals.
Merck’s New Drug Seen As Breakthrough in Cancer Treatment
WEST POINT, Pa. (CBS) — Area oncologists are hailing the FDA’s
approval of a new cancer drug developed by Merck, which has a large
facility in Montgomery County.
The drug, a new form of immuno-therapy is called Keytruda. And it’s being called a game changer in the field of cancer treatment.
The drug has been approved for use against melanoma, but Dr. Hossein Borghaei, of Fox Chase Cancer Center, says similar treatments are being developed to control other forms of cancer.
“We now have at least preliminary report that immuno-therapy can be very effective in lung cancer,” “There are many different companies working on developing drugs that, in essence, are thought of as taking the brake off the immune system, to allow the patients own immune system to recognize the tumor as foreign and to try to control the disease that way.”
Bristol Myers expects to file for FDA approval of its new drug to treat melanoma by the end of the month.
The drug, a new form of immuno-therapy is called Keytruda. And it’s being called a game changer in the field of cancer treatment.
The drug has been approved for use against melanoma, but Dr. Hossein Borghaei, of Fox Chase Cancer Center, says similar treatments are being developed to control other forms of cancer.
“We now have at least preliminary report that immuno-therapy can be very effective in lung cancer,” “There are many different companies working on developing drugs that, in essence, are thought of as taking the brake off the immune system, to allow the patients own immune system to recognize the tumor as foreign and to try to control the disease that way.”
Bristol Myers expects to file for FDA approval of its new drug to treat melanoma by the end of the month.
Friday, October 17, 2014
Bone marrow transplants
A bone marrow transplant is a procedure to replace damaged or destroyed bone marrow with healthy bone marrow stem cells.
Bone marrow is the soft, fatty tissue inside your bones. Stem cells are immature cells in the bone marrow that give rise to all of your blood cellsThere are three kinds of bone marrow transplants:
Bone marrow is the soft, fatty tissue inside your bones. Stem cells are immature cells in the bone marrow that give rise to all of your blood cellsThere are three kinds of bone marrow transplants:
- Autologous bone marrow transplant: The term auto means self. Stem cells are removed from you before you receive high-dose chemotherapy or radiation treatment. The stem cells are stored in a freezer (cryopreservation). After high-dose chemotherapy or radiation treatments, your stems cells are put back in your body to make (regenerate) normal blood cells. This is called a rescue transplant.
- Allogeneic bone marrow transplant: The term allo means other. Stem cells are removed from another person, called a donor. Most times, the donor's genes must at least partly match your genes. Special blood tests are done to see if a donor is a good match for you. A brother or sister is most likely to be a good match. Sometimes parents, children, and other relatives are good matches. Donors who are not related to you may be found through national bone marrow registries.
- Umbilical cord blood transplant: This is a type of allogeneic transplant. Stem cells are removed from a newborn baby's umbilical cord right after birth. The stem cells are frozen and stored until they are needed for a transplant. Umbilical cord blood cells are very immature so there is less of a need for matching. But blood counts take much longer to recover.
Thursday, October 16, 2014
What causes swollen glands?
The most common causes of swollen glands include:
- Bacterial infection, such as strep throat.
- Mouth sores or tooth infection.
- Viral infection, such as mononucleosis or "mono."
- Skin infection.
- Ear infection.
- Sexually transmitted disease.
- Cancers such as leukemia, Hodgkin's disease, non-Hodgkin's lymphoma, and breast cancer.
- Immune system disorders, such as lupus, rheumatoid arthritis, and HIV infection.
- Side effect from a vaccine or from certain medications.
Wednesday, October 15, 2014
What increases the risk of getting Non-Hodgkins Lymphoma?
No one knows exactly what
increases your risk of getting
non-Hodgkin's lymphoma (NHL). Experts do agree that
the disease is not caused by injury and is not contagious. The following risk
factors may increase your chances of having the disease. But most people with
these risk factors do not ever have non-Hodgkin's lymphoma, and many people who
have non-Hodgkin's lymphoma do not have any of these risk factors.2
- Being male. NHL is more common in men than in women.
- Age. The likelihood of getting NHL increases as you get older.
- Impaired immune system. NHL is most common among those who have an impaired immune system, an autoimmune disease, or HIV or AIDS. It also occurs among those who take immunosuppressant medicines, such as medicines following an organ transplant.
- Viral infection. A viral infection, such as Epstein-Barr virus, increases the risk of developing NHL.
- Bacterial infection. Infection with Helicobacter pyloriincreases the risk of lymphoma involving the stomach.
- Environmental exposure. Exposure to agricultural pesticides or fertilizers, solvents and other chemicals, rubber processing, asbestos, and arsenic increases the risk of developing NHL.
Tuesday, October 14, 2014
The survival rate and prognosis for Hodgkin's Lymphoma
The five-year survival rate refers to the percentage of patients,
according to the stage of their disease at diagnosis, who live at least
five years after treatment for Hodgkin lymphoma. Many of these patients
live longer than five years.
- Stage I: 90%-95%
- Stage II: 90%-95%
- Stage III: 85%-90%
- Stage IV: about 80%
Monday, October 13, 2014
What happens to a person with Non-Hodgkin's Lymphoma
In
non-Hodgkin's lymphoma (NHL), either abnormal cells in
the
lymphatic system divide and grow without order or
control or old cells do not die normally. Lymphatic tissue is present in many
areas of the body, so non-Hodgkin's lymphoma can start almost anywhere in the
body.
Non-Hodgkin's lymphoma may occur in a single lymph node, a group of lymph nodes, or an organ. And it can spread to almost any part of the body, including the liver, bone marrow, and spleen. Doctors classify NHL into stages based on where the lymphoma is growing in the body.
Over time, lymphoma cells may replace the normal cells in the bone marrow. Bone marrow failure results in the inability to produce red blood cells that carry oxygen, white blood cells that fight infection, and platelets that stop bleeding.
Long-term survival depends on the type of non-Hodgkin's lymphoma and the stage of the disease when it is diagnosed. Approximately 81 out of 100 people diagnosed with non-Hodgkin's lymphoma are alive 1 year after the disease is diagnosed. That number drops to about 63 out of 100 at 5 years and 49 out of 100 at 10 years.
Non-Hodgkin's lymphoma may occur in a single lymph node, a group of lymph nodes, or an organ. And it can spread to almost any part of the body, including the liver, bone marrow, and spleen. Doctors classify NHL into stages based on where the lymphoma is growing in the body.
Over time, lymphoma cells may replace the normal cells in the bone marrow. Bone marrow failure results in the inability to produce red blood cells that carry oxygen, white blood cells that fight infection, and platelets that stop bleeding.
Long-term survival depends on the type of non-Hodgkin's lymphoma and the stage of the disease when it is diagnosed. Approximately 81 out of 100 people diagnosed with non-Hodgkin's lymphoma are alive 1 year after the disease is diagnosed. That number drops to about 63 out of 100 at 5 years and 49 out of 100 at 10 years.
Friday, October 10, 2014
Knowing if I have Hodgkin's Lymphoma
The diagnosis of Hodgkin lymphoma can only be made by a tissue biopsy
-- cutting a tissue sample for examination. If you have an enlarged,
painless lymph node that your doctor suspects may be due to Hodgkin
lymphoma, tissue will be taken for biopsy or the entire node will be
removed. The diagnosis of Hodgkin lymphoma can be confirmed if a type of
cell, called a Reed-Sternberg cell, is seen.
If a biopsy reveals that you do have Hodgkin lymphoma, you may need additional tests to determine the extent, or stage, of the disease. Tests include blood tests, chest X-ray, computed tomography (CT) scans of the chest, abdomen and pelvis, and possibly the neck, and a PET scans. Magnetic resonance imaging (MRI) scans, bone scans, spinal tap (lumbar puncture), and bone marrow studies are useful under special circumstances.
These tests will confirm the stage of the disease and the best type of therapy to pursue.
If a biopsy reveals that you do have Hodgkin lymphoma, you may need additional tests to determine the extent, or stage, of the disease. Tests include blood tests, chest X-ray, computed tomography (CT) scans of the chest, abdomen and pelvis, and possibly the neck, and a PET scans. Magnetic resonance imaging (MRI) scans, bone scans, spinal tap (lumbar puncture), and bone marrow studies are useful under special circumstances.
These tests will confirm the stage of the disease and the best type of therapy to pursue.
Thursday, October 9, 2014
Other Non-Hodgkin Lymphoma risk factors
- Chemical exposure: arsenic, lead, vinyl chloride, asbestos, insecticides, pesticides and weed killers, wood preservatives, organic chemicals, and solvents
- Exposure to nuclear accidents, nuclear testing, or underground radiation leaks
- Treatment with immunosuppressant drugs, for prevention of organ transplantation rejection, or for treatment of inflamatory and autoimmune disorders
- Tumor necrosis factor agents used to treat psoriatic and rheumatoid arthritis and inflammatory bowel disease
- Prior exposure to chemotherapy and/or radiation used to treat a prior diagnosis of cancer
- Treatment with a medication called Dilantin (phenytoin), commonly used to treat seizure disorders
- Use of hair dyes, especially dark and permanent colors, used before 1980
- High levels of nitrates found in drinking water
- Diets high in fat and meat products
- Ultraviolet light exposure
- Alcohol intake
Wednesday, October 8, 2014
What causes Non-Hodgkin's Lymphoma?
The exact cause of non-Hodgkin lymphoma is unknown. However, there
are multiple medical conditions that are associated with an increased
risk of developing non-Hodgkin lymphoma:
- Inherited immune deficiencies: ataxia-telangectasia, Wiskott-Aldrich syndrome, common variable immunodeficiency, severe combined immunodeficiency, and X-linked lymphoproliferative syndrome
- Genetic syndromes: Down syndrome, Klinefelter's syndrome (a genetic condition in men caused by an extra X chromosome)
- Immune disorders, and their treatments: Sjögren's syndrome (an immune disorder characterized by unusual dryness of mucus membranes), rheumatoid arthritis, systemic lupus erythematosus
- Celiac disease, a disease involving the processing of certain components of gluten, a protein in grains
- Inflammatory bowel disease, particularly Crohn’s disease, and its treatment
- Psoriasis
- Family history of lymphoma
- Bacteria: Helicobacter pylori, asssociated with gastritis and gastric ulcers; Borrelia burgdorferi, associated with Lyme disease; Campylobacter jejuni; Chalmydia psittaci
- Viruses: HIV, HTLV-1, SV-40, HHV-8, Epstein Barr virus, hepatitis virus
- Non-random chromosomal translocations and molecular rearrangements
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