Steve Jobs’s death a reminder that pancreatic cancer’s toll is still too high

When Carnegie Mellon professor Randy Pausch died of pancreatic cancer in 2008, many people were both saddened by his loss and hopeful that his very public experience with this ghastly disease might prompt a race for the cure.

But medicine moves slowly. With the loss of Steve Jobs and, just weeks before him, Nobel Prize recipient Ralph Steinman, we’re struck again by the fact that pancreatic cancers are a horribly tough nut to crack.

As with everything he did, Steve Jobs surpassed expectations and forged new territory in surviving his disease, described as a rare form of neuroendocrine tumor on his pancreas, for more than five years. But his was an exceptional case.

The five-year survival rate for the more common form of pancreatic cancer is less than 4 percent, according to the American Cancer Society. That’s because there’s no way (yet) to detect it early: It creeps up quietly, not causing noticeable symptoms until the tumor on the pancreas has grown too large to be surgically removed or the cancer has spread to other parts of the body, typically the liver.

An estimated 44,030 people will be diagnosed with pancreatic cancer in the U.S. in 2011; 37,660 of them will die from the disease, according to the National Cancer Institute.

Despite some recent developments in detecting and treating pancreatic cancer, the numbers haven’t budged in years. As the CDC reported in 2010, between 1999 and 2007, the death rate “decreased by 9.6 percent for lung cancer, 23.9 percent for prostate cancer, 15.2 percent for breast cancer, and 19.6 percent for colon cancer. The death rate for pancreatic cancer did not change significantly during this period.”

As I wrote when Pausch died, pancreatic cancer research doesn’t attract the attention that many of us think it should. That doesn’t mean that there aren’t scientists out there working hard to crack this nut and others working to raise awareness and provide support for those affected by this disease. But finding ways to detect pancreatic cancer early enough to make a difference, to effectively treat it, to improve survival rates — or even to prevent it — will require the kind of tenacity and visionary thinking that Steve Jobs brought to the table.

PharmaGap Seeks Licensing Deal

OTTAWA, ONTARIO, Jun 03 (MARKET WIRE) —
PharmaGap Inc. (TSX VENTURE: GAP)(OTCBB: PHRGF) (“PharmaGap” or
“the Company”) announced today that it is seeking a Licensing
Agreement with a major pharmaceutical company for its lead cancer drug.

The Company has maintained contact with and continues to provide data to
the in-licensing groups in several major companies active in the cancer
field. Recent tests at the National Cancer Institute and results from
current and near term studies have been important in advancing these
discussions.

A key element in the licensing interest is the toxicity profile of the
drug. Very low to no toxicity within the effective dose range has been
observed in earlier animal tests conducted by the Company and confirmed
in the results of animal tests recently completed at the Ottawa Hospital
Research Institute (“OHRI”).

A number of testing activities are underway or are about to start that
will provide the Company with additional data for the selection of the
cancer target, route of administration and dose levels for GAP-107B8.
Results of formal toxicology tests will be announced when available, and
additional tests will be designed and pursued in order to complete the
data dossier required for clinical trial application and for building
value with potential licensing partners. Tests currently underway
include:

– a test designed to determine the duration of time the drug remains
active in blood plasma (using rat subjects at the National Research
Council), in collaboration with Tandem Laboratories. Results of this
study are expected to be available in the next few weeks;
– an in vitro test of efficacy in melanoma and sarcoma cancer cells at
Memorial Sloan Kettering Cancer Centre, with results expected during
June;
– a test of GAP-107B8′s relative effect against non-cancerous
“normal”
cells, an indicator of the drug’s toxicity profile, with results
expected in July;

“Targeted testing will continue at an accelerated pace as we work
to deliver the data required for a valuable licensing agreement and the
introduction of our lead drug to clinical use”, said President
Robert McInnis. “I hope to announce soon the addition to the company
of an experienced executive to lead in this opportunity to deliver an
exciting new choice of treatment for cancer sufferers and reward to those
who have carried the company to this position”, he said.

About PharmaGap Inc.

PharmaGap Inc. (TSX VENTURE: GAP), based in Ottawa, ON, is a
biotechnology company with a core focus on developing novel peptide
therapeutics for the treatment of cancer. PharmaGap’s GAP-107B8 is a
novel peptide drug that has been shown to be highly cytotoxic to numerous
cancer types, including chemo-resistant cancers, in vitro. For more
information on PharmaGap please visit the Company’s website at
www.pharmagap.com.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as
that term is defined in the policies of the TSX Venture Exchange) accepts
responsibility for the adequacy or accuracy of this release. No
Securities Commission or other regulatory authority having jurisdiction
over PharmaGap has approved or disapproved of the information contained
herein. This release contains forward looking statements that may not
occur or may change materially.

Contacts:
PharmaGap Inc.
Robert McInnis
President & CEO
613-990-9551
bmcinnis@pharmagap.com

PharmaGap Inc.
Martin Tremblay
IR Consultant
514-351-3736
IR@pharmagap.com

Copyright 2010, Market Wire, All rights reserved.

Inovio Pharmaceuticals to Present at Investor Conferences

BLUE BELL, Pa.–(Business Wire)–
Inovio Pharmaceuticals, Inc. (NYSE Amex: INO), a leader in the development of
preventive and therapeutic vaccines against cancers and infectious diseases,
announced today that president and CEO, Dr. J. Joseph Kim will present a
corporate update on its DNA vaccines for influenza, HIV and cancer and its
vaccine delivery technology at the following investor conferences:

Noble Financial Sixth Annual Equity Conference
June 7th, 2010
Hollywood, FL
Presentation: June 7th, 2010, 9:00 a.m. ET
A live and archived webcast will be accessible on Inovio`s website at www.inovio.com.

Ninth Annual Needham Healthcare Conference
June 9 – 10, 2010
New York, NY
Presentation: June 9, 2010, 2:40 p.m. ET

About Inovio Pharmaceuticals, Inc.

Inovio Pharmaceuticals is focused on the development of a new generation of
vaccines, called DNA vaccines, to prevent and treat cancers and infectious
diseases. The company`s SynCon “universal” vaccines are designed to provide
broad cross-strain protection against known as well as newly emergent strains of
pathogens such as influenza. Inovio`s proprietary electroporation delivery
technology has been shown by initial human data to be safe and significantly
increase gene expression and immune responses. Inovio`s clinical programs
include HPV/cervical cancer (therapeutic), avian flu, and HIV vaccines. Inovio
is developing its universal influenza vaccines in collaboration with scientists
from the University of Pennsylvania, National Microbiology Laboratory of the
Public Health Agency of Canada, and NIH`s Vaccine Research Center. Other
partners and collaborators include Merck, ChronTech, University of Southampton,
National Cancer Institute, and HIV Vaccines Trial Network. More information is
available at www.inovio.com.

This press release contains certain forward-looking statements relating to our
business, including our plans to develop electroporation-based drug and gene
delivery technologies and DNA vaccines and our capital resources. Actual events
or results may differ from the expectations set forth herein as a result of a
number of factors, including uncertainties inherent in pre-clinical studies,
clinical trials and product development programs (including, but not limited to,
the fact that pre-clinical and clinical results referenced in this release may
not be indicative of results achievable in other trials or for other
indications, that results from one study may not necessarily be reflected or
supported by the results of other similar studies and that results from an
animal study may not be indicative of results achievable in human studies), the
availability of funding to support continuing research and studies in an effort
to prove safety and efficacy of electroporation technology as a delivery
mechanism or develop viable DNA vaccines, the adequacy of our capital resources,
the availability or potential availability of alternative therapies or
treatments for the conditions targeted by the company or its collaborators,
including alternatives that may be more efficacious or cost-effective than any
therapy or treatment that the company and its collaborators hope to develop,
evaluation of potential opportunities, issues involving patents and whether they
or licenses to them will provide the company with meaningful protection from
others using the covered technologies, whether such proprietary rights are
enforceable or defensible or infringe or allegedly infringe on rights of others
or can withstand claims of invalidity and whether the company can finance or
devote other significant resources that may be necessary to prosecute, protect
or defend them, the level of corporate expenditures, assessments of the
company`s technology by potential corporate or other partners or collaborators,
capital market conditions, our ability to successfully integrate Inovio and VGX
Pharmaceuticals, the impact of government healthcare proposals and other factors
set forth in our Annual Report on Form 10-K for the year ended December 31,
2009, our Form 10-Q for the three months ended March 31, 2010, and other
regulatory filings from time to time. There can be no assurance that any product
in Inovio`s pipeline will be successfully developed or manufactured, that final
results of clinical studies will be supportive of regulatory approvals required
to market licensed products, or that any of the forward-looking information
provided herein will be proven accurate.

Investors:
Inovio Pharmaceuticals
Bernie Hertel, 858-410-3101
bhertel@inovio.com
or
Media:
Richardson & Associates
Jeff Richardson, 805-491-8313
jeff@richardsonglobalpr.com

Copyright Business Wire 2010

Most patients with common thyroid cancer survive regardless of treatment

Washington, May 18 (ANI): People with papillary thyroid cancer that has not spread beyond the thyroid gland have positive outcomes regardless of whether they receive treatment within the first year after diagnosis, a new research has shown.

Louise Davies, of Dartmouth Medical School, Hanover, N.H. and Gilbert Welch, both also of Department of Veterans Affairs Medical Center, White River Junction, Vt., and The Dartmouth Institute for Health Policy and Clinical Practice, Hanover, studied cancer cases and individual treatment data from National Cancer Institute registries.

They then tracked cause of death through the National Vital Statistics System.

The researchers identified 35,663 patients with papillary thyroid cancer that had not spread to the lymph nodes or other areas at diagnosis. Of these, 440 (1.2 percent) did not undergo immediate, definitive treatment. Over an average of six years of follow-up, six of these patients died of their cancer.

This was not significantly different from the rate of cancer death among the 35,223 individuals who did undergo treatment (161 over an average of 7.6 years of follow-up).

The 20-year survival rate from cancer was estimated to be 97 percent for those who did not receive treatment and 99 percent for those who did.

“These data help put management decisions about localized papillary thyroid cancer in perspective: papillary thyroid cancers of any size that are confined to the thyroid gland, have no lymph node metastases at presentation and do not show extraglandular extension [reach beyond the thyroid gland] are unlikely to result in death due to the cancer,” the authors said.

“Thus, clinicians and patients should feel comfortable considering the option to observe for a year or longer cancers that fall into this category.

“When treatment is elected, the cancers in this category can be managed with either hemithyroidectomy [removal of part of the thyroid] or total thyroidectomy [removal of the complete gland], and the prognosis will be the same,” they added.

The study has been reported in the May issue of Archives of Otolaryngology–Head & Neck Surgery, one of the JAMA/Archives journals. (ANI)

Coffee, soft drinks not tied to colon cancer risk

Washington, May 8 (ANI): Drinking large amounts of coffee and sugar-sweetened, carbonated soft drinks does not increase the risk of colon cancer, according to a new study.

The study has been published online May 7 in the Journal of the National Cancer Institute.

Some previous studies have suggested that coffee and tea may lower the risk of cancer, but others show that they could increase the risk. Tea, for instance contains anti-oxidants that in theory help prevent cancer but also has polyamines, which in theory promote cancer. Sugar-sweetened soft drinks are associated with weight gain, obesity, and other conditions that are potential risk factors for colon cancer.

For this study, Xuehong Zhang, M.D., Sc.D., and colleagues at the Harvard School of Public Health analyzed data from 13 studies conducted in North America and Europe. Among 731,441 participants in these studies, there were 5,604 who developed colon cancer. Those who drank large amounts of coffee—more than six 8-oz cups a day—were no more likely to develop the disease than those who drank less.

Likewise, those who drank more than 18 oz daily of sugar-sweetened, carbonated beverages had no higher risk of colon cancer. But the authors note that the results for sugar-sweetened carbonated beverages should be interpreted with caution because only 2 percent of the study population drank more than 18 oz of these beverages daily.

The results were similar regardless of sex, smoking status, alcohol consumption, body mass index, level of physical activity, and location of the tumor.

The authors found a modest association between drinking high amounts of non-herbal tea—more than four 8-oz cups a day—and colon cancer risk. However, they note that very few people in the study drank that much tea and that the association could be due to chance.

“Drinking coffee or sugar-sweetened carbonated soft drinks was not associated with colon cancer risk,” the researchers conclude. “However, a modest positive association with higher tea consumption is possible and requires further study.” (ANI)

Low-moderate alcohol consumption does not harm women”s bone health

Washington, April 28 (ANI): A new study has offered more evidence that low to moderate alcohol consumption does not harm bone health in women.

There is lack of information on low to moderate alcohol consumption and bone health, especially in women.

This may be particularly important because alcoholics tend to have weak bones – possibly due to low levels of vitamin D, which would hinder absorption of dietary calcium in the small intestine.

To help fill in a knowledge gap in this area, researchers at the National Cancer Institute (NCI) and the US Department of Agriculture ARS Beltsville Human Nutrition Research Center teamed up to rigorously test whether they could demonstrate any negative effects of low to moderate alcohol consumption on bone health in postmenopausal women.

This study was part of the Women”s Alcohol Study, which involved 51 postmenopausal women who did not smoke or use hormone replacement therapy.

The research team measured the effects of controlled alcohol consumption during three periods of time. In one of these experimental periods, subjects consumed an alcohol-free beverage once each day.

During the other two, they consumed either 15 or 30 g of nearly pure alcohol (Everclear) served up in orange juice.

These amounts of alcohol are equivalent to 1 or 2 glasses, respectively, of wine or a bottle of beer. Each study period lasted for 8 weeks, during which time all meals were also provided to the women- either in the USDA”s Beltsville Human Nutrition Research Center or provided as “take-out” for the weekends.

The researchers did not find any negative effects of either dose of alcohol on circulating levels of vitamin D.

Low to moderate intake also did not affect a variety of markers (single-nucleotide polymorphisms or SNPs), which influence alcohol metabolism.

These results suggest that the relationship previously documented between alcohol consumption and bone disease in alcoholics may only be seen in very heavy drinkers, or may be due to something other than the alcohol itself.

“It looks like low to moderate alcohol consumption, at least over the short term, does not harm bone health. Collectively, when all the available published epidemiologic data are considered, it looks like low to moderate alcohol may actually have a beneficial effect,” said Dr. Somdat Mahabir.

The results of the study were presented on April 27, 2010 at the Experimental Biology 2010 meeting in Anaheim. (ANI)

Gaining a pound a year after age 20 raises women”s breast cancer risk

Washington, Apr 21 (ANI): Women who gain a pound or two a year after age 20 increase their risk for postmenopausal breast cancer, says a new study.

The research was presented at the American Association for Cancer Research 101st Annual Meeting 2010.

To reach the conclusion, researchers analyzed information from 72,007 women in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial cohort, who were 55 to 74 years old at study entry.

The analysis included 3,677 cases of postmenopausal breast cancer, which makes this one of the larger studies of its kind, according to the researchers.

The boffins observed the strongest associations among women who had never used menopausal hormone therapy; results were shown only for this group of women.

“Compared with women who maintained approximately the same BMI, those who had an increase of 5 kg/m2 or more between age 20 and study entry had a nearly twofold increased risk of breast cancer,” said Laura Sue, M.P.H., a cancer research fellow at the National Cancer Institute (NCI).

Results showed that nearly 57 percent of the study population”s BMI increased 5 kg/m2 or more between age 20 and study entry. A BMI increase of 5 kg/m2 is equivalent to a woman of average height, 5”4″, gaining approximately 30 pounds.

Women who reported a BMI increase of 5 kg/m2 or more between age 20 and 50 were at an 88 percent increased risk of developing postmenopausal breast cancer, compared with women who reported a stable BMI. For women who reported a BMI increase of 5 kg/m2 or more between age 50 and study entry, risk increased 56 percent, compared with women who maintained BMI. BMI gain both before and after age 50 independently contribute to increased risk of postmenopausal breast cancer. (ANI)

Well-cooked meat may increase bladder cancer risk

Washington, Apr 20 (ANI): Frequently eating meat, especially the one which is well done or cooked at high temperatures, may increase your chances of developing bladder cancer, according to a new study.

The University of Texas M. D. Anderson Cancer Center study was presented at the American Association for Cancer Research 101st Annual Meeting 2010.

“It”s well known that meat cooked at high temperatures generates heterocyclic amines (HCAs) that can cause cancer,” said study presenter Jie Lin, Ph.D., assistant professor in M. D. Anderson”s Department of Epidemiology. “We wanted to find out if meat consumption increases the risk of developing bladder cancer and how genetic differences may play a part.”

HCAs form when muscle meats, such as beef, pork, poultry or fish, are cooked at high temperatures. They are products of interaction between amino acids, which are the foundation of proteins, and the chemical creatine, which is stored in muscles. Past research has identified 17 HCAs that may contribute to cancer.

This study, which took place over 12 years, included 884 M. D. Anderson patients with bladder cancer and 878 people who did not have cancer. They were matched by age, gender and ethnicity.

Using a standardized questionnaire designed by the National Cancer Institute (NCI), researchers gathered information about each participant”s dietary habits. They then categorized people into four levels, ranging from lowest to highest red meat intake.

The group with the highest red-meat consumption had almost one-and-a-half times the risk of developing bladder cancer as those who ate little red meat.

Specifically, consumption of beef steaks, pork chops and bacon raised bladder cancer risk significantly. Even chicken and fish – when fried – significantly raised the odds of cancer. (ANI)

Diabetes drug could help prevent lung cancer

Washington, April 20(ANI): Metformin, a mainstay of treatment for patients with type 2 diabetes, is believed to be useful in preventing lung cancer.

However, researchers are waiting for its confirmation in clinical trials.

Apart from reducing levels of insulin-like growth factor-1 (IGF-1) and circulating insulin, which is important in patients with type 2 diabetes, metformin may inhibit tumor growth as well.

Phillip A. Dennis, senior investigator in the medical oncology branch of the National Cancer Institute, said: “This well tolerated, FDA-approved diabetes drug was able to prevent tobacco-carcinogen induced lung tumors.”

The experts treated mice with metformin for 13 weeks following exposure to a nicotine-derived nitrosamine (NNK), which is the most prevalent carcinogen in tobacco and a known promoter of lung tumorigenesis.

When given orally, metformin was well tolerated and reduced tumor burden by 40 percent to 50 percent. Dennis said levels of metformin reached in mice are readily achievable in humans.

Dennis and colleagues further evaluated the effects of metformin on a series of biomarkers for lung tumorigenesis and found that it inhibited mammalian target of rapamycin (mTOR), which promotes lung tumor growth, by decreasing levels of circulating insulin and IGF-1.

It was observed that this effect was even more profound when metformin was administered to mice by injection, which reduced lung tumor burden by 72 percent.

The study was presented at the AACR 101st Annual Meeting 2010. (ANI)

Occupational sunlight exposure linked to reduced kidney cancer risk in men

Washington, March 8 (ANI): Men employed in occupations with potential exposure to high levels of sunlight have a reduced risk of kidney cancer compared with men who are less likely to be exposed to sunlight at work, according to a new study.

Research suggests that vitamin D, which is obtained from sun exposure, some foods, and from supplements, may help prevent some cancers.

Sara Karami, of the National Cancer Institute in Rockville, and her colleagues designed a study, which included 1,097 patients with kidney cancer and 1,476 individuals without cancer from four Central and Eastern European countries.

Demographic and lifetime occupational information was collected through in-person interviews and occupational sunlight exposure indices were estimated based on industry and job titles.

The investigators observed a 24 percent to 38 percent reduction in kidney cancer risk with increasing occupational sunlight exposure among male participants in the study.

No association between occupational sunlight exposure and kidney cancer risk was observed among females in the study.

The findings suggest that sunlight exposure may affect kidney cancer risk, although the authors have no explanation for the apparent differences in risk between men and women. They offer several hypotheses for the observed differences.

Biological or behavioral differences between men and women may play a role.

For example, hormonal differences may influence the body”s response to sunlight exposure, females may have a higher tendency to use sunscreen on a regular basis, and men may be prone to working outdoors while shirtless.

It is also possible that the observed gender differences in risk were due to confounding by other unmeasured kidney cancer risk factors, such as recreational sunlight exposure and physical activity levels.

The study has been published early online in CANCER, a peer-reviewed journal of the American Cancer Society. (ANI)

Boffins find link between common sexual infection, prostate cancer risk

Washington, Sept 10 (ANI): A strong association between the common sexually transmitted infection, Trichomonas vaginalis, and risk of advanced and lethal prostate cancer in men has been found by researchers from Harvard School of Public Health (HSPH) and Brigham and Women’s Hospital.

The study appears online on September 9, 2009, on the Journal of the National Cancer Institute website and will appear in a later print edition.

“Prostate cancer is the most common cancer among men in western countries, and the second leading cause of cancer-specific mortality. Identifying modifiable risk factors for the lethal form of prostate cancer offers the greatest opportunity to reduce suffering from this disease,” said Jennifer Stark, an HSPH researcher and lead author of the study.

One potential risk factor is inflammation, which appears to play an important role in the development and progression of prostate cancer, but the source of inflammation of the prostate is not clear.

Trichomonas vaginalis is the most common non-viral sexually transmitted infection, and can infect the prostate and could be a source of inflammation.

In the study, researchers analyzed blood samples from 673 men with prostate cancer who were participants in the Physicians’ Health Study and compared infection status based on antibody levels to 673 control subjects who were not diagnosed with prostate cancer. The blood samples were collected in 1982, on average a decade before cancer diagnosis.

The results showed that Trichomonas vaginalis infection was associated with a more than two-fold increase in the risk of prostate cancer that was advanced stage at diagnosis, and a nearly three-fold increase in prostate cancer that would result in death.

“The fact that we found a strong association between serologic evidence of infection with Trichomonas vaginalis, a potentially modifiable risk factor, and risk of advanced and lethal disease represents a step forward in prostate cancer, especially given that so few risk factors for aggressive prostate cancer have been identified,” said Lorelei Mucci, assistant professor in the department of epidemiology at HSPH and senior author of the study. (ANI)

Kennedy led high quality of life up to his death, say doctors

Washington, Aug. 27 (ANI): Senator Edward M. Kennedy maintained a very good quality of life after he was diagnosed with brain cancer.

He continued speaking in front of Congress and making public appearances almost up until the time of his death on Wednesday morning at his home on Cape Cod.

“For a man in his 70s, he did very, very well,” Fox News quoted Dr. Michael Gruber, professor of neurology and neuro-surgery at NYU School of Medicine and Director of the Brain Tumor Center in Summit, New Jersey.

“He was walking unassisted (up until the end), he was lucid,” Dr. Gruber added.

Dr. Suriya Jeyapalan, a neuroncologist at Beth Israel Deaconess Medical Center in Boston, said that Kennedy’s condition was treatable, but not curable.

More than 18,000 primary malignant brain tumors are diagnosed each year in the United States; about 9,000 of those are malignant gliomas, according to the National Cancer Institute.

In general, half of all patients die within a year.

However, patients with malignant gliomas often maintain a very good quality of life after their diagnosis, Gruber said.

Gruber said the fate of a brain tumor patient depends on the location of the tumor. For example, if the tumor is located on the frontal or temporal lobe, then the patient’s speech might be affected.

Since Kennedy’s tumor was on the left parietal lobe, he suffered seizures. Other brain tumor patients may lose the ability to walk, lose vision or lose comprehension skills, depending on where the tumor lies or if the tumor invades other parts of the brain.

Kennedy underwent targeted brain surgery on June 2, 2008 at Duke University Medical Center. The surgery lasted for about 3 1/2 hours and Kennedy spent some of that time awake.

Targeted brain surgery is a delicate balance – removing as much tumor as possible improves cancer control, but there’s also the risk of harming the healthy brain tissue that lets patients walk and talk.

This is why doctors keep patients awake and talking during the surgery to make sure they’re steering clear of delicate areas of the brain. The surgery, considered a success, was followed by months of chemo and radiation therapy.

Kennedy has suffered other health problems over the years.

In October 2007, doctors performed surgery to clean out a partially blocked neck artery, which left untreated, could have trigged a stroke.

In 1964, Kennedy suffered several fractured bones in his back, broken ribs, and internal bleeding after he was involved in a plane crash.

Two people died in that crash. (ANI)

High insulin levels may increase prostate cancer risk

Washington, Aug 22 (ANI): Researchers have found that high insulin levels might increase the risk of developing prostate cancer.

Lead researcher Dr Demetrius Albanes, of the Nutritional Epidemiology Branch, Division of Cancer Epidemiology and Genetics at the National Cancer Institute in Bethesda, Md., examined the relationship of the level of serum insulin and glucose, as well as surrogate indices of insulin resistance, to the development of prostate cancer.

The study showed that elevated insulin levels in the normal range appear to be associated with an increased risk of prostate cancer.

When subjects in the second through fourth quartiles of serum insulin concentration were compared with those in the first or lowest quartile, higher insulin levels within the normal range were associated with statistically significantly increased risk of prostate cancer.

The findings appear in the Journal of the National Cancer Institute. (ANI)

Promising drug target for aggressive form of breast cancer identified

Washington, July 9 (ANI): Researchers at Andel Research Institute (VARI) have identified a potential target for the treatment of the most aggressive forms of breast cancer.

They found that the Met gene may play a critical role in the development of an aggressive form of breast cancer known as basal breast cancer.

“Breast cancer mortality rates are actually declining, but the cancers that don’t respond to traditional treatments tend to be more aggressive and have decreased survival rates,” said VARI Research Scientist Carrie Graveel, Ph.D., lead author of the study.

VARI Distinguished Scientific Fellow George Vande Woude, Ph.D., who heads the laboratory that conducted the research, said: “Met has already been associated with decreased survival in breast cancer, but this study identifies its importance in specific types that can be distinguished at the molecular level.”

In the 1980′s, Dr. Vande Woude’s laboratory at the National Cancer Institute demonstrated that inappropriate levels of Met occur in human tumours, and that cells with inappropriate Met signaling dramatically impact the spread of cancer.

This signaling is implicated in most types of human cancers and high Met expression often correlates with poor prognosis.

“We found Met in the majority of breast cancers. But levels were highest in aggressive types, making Met a promising drug target that could help patients that currently have few treatment options,” said VARI Research Technician Jack DeGroot, another of the study’s authors.

The study has been published this week in Proceedings of the National Academy of Sciences U.S.A. (ANI)

Hepatitis B virus mutations may help predict liver cancer risk

Washington, July 3 (ANI): Scientists from Second Military Medical University in Shanghai have revealed that mutations in the DNA of hepatitis B virus (HBV) might help predict which patients are at increased risk of developing liver cancer,

HBV infection is a known cause of hepatocellular carcinoma (HCC), the most common form of liver cancer.

During the research, the team analysed 43 studies with a total of 11,582 HBV-infected participants, of whom 2,801 had HCC.

They found that certain mutations were associated with development of HCC, and more prevalent as chronic HBV infection progressed from the asymptomatic state to liver cirrhosis or HCC.

“Frequent examination of patients with chronic HBV infections for the presence of these mutations may be useful for identifying which patients require preventive antiviral treatment and for the prediction of HCC,” wrote the authors.

The study appears in Journal of the National Cancer Institute. (ANI)

Prostate cancer screening not very beneficial, say scientists

Washington, June 29 (ANI): Two recently conducted large randomised trials suggest that prostate cancer screening has yet to prove its worth.

Published in CA: A Cancer Journal for Clinicians, a study report says that if there is a benefit of screening, it is, at best, small.

Given that prostate cancer is virtually ubiquitous in men as they age, the report points out that it is clear that a goal of “finding more cancers” is not acceptable.

The authors instead say that public health principles demand that screening must reduce the risk of death from prostate cancer, reduce the suffering from prostate cancer, or reduce health care costs when compared with a non-screening scenario.

According to them, prostate cancer screening has yet to reach one of these standards to date.

The research team-including Dr. Otis W. Brawley of the American Cancer Society and Dr. Donna Ankerst and Dr. Ian M. Thompson of the University of Texas Health Science Center at San Antonio-agree that a decrease in prostate cancer death rates has been observed as compared to the mid-1980s, since when screening with the prostate-specific antigen (PSA) blood test has more than doubled the risk of a prostate cancer diagnosis.

They, however, say that the relative contribution of PSA testing as opposed to other factors, such as improved treatment, has been uncertain.

The experts say that a computer modeling study using National Cancer Institute’s Surveillance, Epidemiology, and End Results (SEER) registries estimated that more than one in four cancers detected in whites (29 percent) and nearly half of cancers detected in blacks (44 percent) were overdiagnosed cancers.

A similar model using data from Europe estimated a 50 percent overdiagnosis rate, they add.

The team even say that patients who are diagnosed with clinically insignificant tumours are subject to unnecessary diagnostic tests and unneeded treatment and suffer psychosocial harms. Such patients are also labelled “a cancer patient”, which can have negative economic consequences.

The authors further say that over-diagnosis significantly affects 5-year survival statistics, making them uninformative in demonstrating progress in cancer control.

Their report says that the future of prostate cancer will include better screening tests, better methods to assess a man’s risk of prostate cancer, and prevention strategies, including the use of finasteride, a drug currently used for the treatment of urinary symptoms related to prostate enlargement.

In another editorial, Dr. Peter Boyle of the International Prevention Research Institute, Lyon, France and report co-author Dr. Brawley say: “The real impact and tragedy of prostate cancer screening is the doubling of the lifetime risk of a diagnosis of prostate cancer with little if any decrease in the risk of dying from this disease.”

The authors pointed out that in 1985, before PSA screening was available, an American man had an 8.7 percent lifetime risk of being diagnosed with prostate cancer and a 2.5 percent lifetime risk of dying from the disease.

Twenty years later, in 2005, an American man had a 17 percent lifetime risk of being diagnosed with prostate cancer and a 3 percent risk of dying from the disease.

According to the report, even in the best case scenario, applying the findings of a European trial that found PSA led to a 20 percent reduction in the risk of death, the average man who chooses screening decreases his risk of prostate cancer death from a lifetime risk of 3 percent to a lifetime risk of 2.4 percent.

In exchange, he doubles the chances of becoming a prostate cancer patient, his risk of diagnosis rising from about nine percent to at least 17 percent.

“Men should discuss the now quantifiable risks and benefits of having a PSA test with their physician, and then share in making an informed decision, and the weight of the decision should not be thrown into the patient’s lap,” the authors concluded. (ANI)

Eating animal fat may raise pancreatic cancer risk

Washington, June 27 (ANI): A high-fat diet full of red meat and dairy products can increase the risk of pancreatic cancer, says a new study.

The research has been published online June 26 in the Journal of the National Cancer Institute.

To reach the cocnlsuion, Rachael Z. Stolzenberg-Solomon, Ph.D., of the Division of Cancer Epidemiology and Genetics at the National Cancer Institute in Bethesda, Md., and colleagues analyzed a cohort of over 500,000 people from the National Institutes of Health – AARP Diet and Health Study.

Participants completed a food frequency questionnaire in 1995 and 1996 and were followed prospectively for an average of 6 years to track a variety of health outcomes, including pancreatic cancer.

Men and women who consumed high amounts of total fats had 53 percent and 23 percent higher relative rates of pancreatic cancer, respectively, compared with men and women who had the lowest fat consumption.

Participants who consumed high amounts of saturated fats had 36 percent higher relative rates of pancreatic cancer compared with those who consumed low amounts.

“[W]e observed positive associations between pancreatic cancer and intakes of total, saturated, and monounsaturated fat overall, particularly from red meat and dairy food sources. We did not observe any consistent association with polyunsaturated or fat from plant food sources,” the authors write.

“Altogether, these results suggest a role for animal fat in pancreatic carcinogenesis,” they added. (ANI)

Our skin hosts much more diverse set of bacteria than previously believed

Washington, May 29 (ANI): Human skin is home to a much wider array of bacteria than previously thought, a new study by National Institutes of Health researchers has shown.

The study has also shown that at least among healthy people, the greatest influence on bacterial diversity appears to be body location. For example, the bacteria under one person’s arms could be more similar to those under another person’s arm than they are to the bacteria that live on your forearm.

These variations in bacterial habitats may explain why some skin complaints tend to affect certain areas of the body.

“Our work has laid an essential foundation for researchers who are working to develop new and better strategies for treating and preventing skin diseases,” said Julia A. Segre, Ph.D., of the National Human Genome Research Institute (NHGRI), who was the study’s senior author.

“The data generated by our study are freely available to scientists around the world. We hope this will speed efforts to understand the complex genetic and environmental factors involved in eczema, psoriasis, acne, antibiotic-resistant infections and many other disorders affecting the skin,” Segre added.

Drawing on the power of modern DNA sequencing technology and computational analysis, the research team from NHGRI, the National Cancer Institute (NCI) and the NIH Clinical Center uncovered a far more diverse collection of microbes on human skin than had been detected by traditional methods that involved growing microbial samples in the laboratory.

The study involved taking skin samples from 20 sites on the bodies of 10 healthy volunteers.

Study co-author Maria L. Turner, M.D., senior clinician in NCI’s Dermatology Branch, said: “We selected skin sites predisposed to certain dermatological disorders in which microbes have long been thought to play a role in disease activity.”

The researchers extracted DNA from each sample and sequenced the 16S ribosomal RNA genes, which are a type of gene that is specific to bacteria.

The researchers identified more than 112,000 bacterial gene sequences, which they then classified and compared. The analysis detected bacteria belonging to 19 different phyla and 205 different genera, with diversity at the species level being much greater than expected.

To gauge how much the skin microbiome differs among healthy people, the researchers studied many different parameters.

They found considerable variation in the number of bacteria species at different sites, with the most diversity being seen on the forearm (44 species on average) and the least diversity behind the ear (19 species on average).

The study was published today in the journal Science. (ANI)

Childhood cancer survivors face lifelong cancer risk

Washington, May 27 (ANI): People who have been treated for cancer in childhood have a persistent and high risk for a second primary cancer throughout their lives, according to a new study.

In earlier studies, scientists said that second primary cancer risk after treatment in childhood is higher than that in the general population.

However, follow-up was restricted to a few decades and the incidence in long-term survivors was rarely investigated.

The latest study-led by Dr. Jorgen H. Olsen of the Institute of Cancer Epidemiology, Danish Cancer Society-offers data for incidence of second cancers among childhood cancer patients in the Nordic countries over a full age range, from birth to age 79.

For the study, the researchers analysed a cohort of 47,697 people who were diagnosed with cancer prior to the age of 20, from 1943 to 2005.

Members of the cohort were followed for subsequent primary cancers listed in registries, and the age-specific risk pattern of the survivors was compared with that of the national populations using country and sex standardized incidence ratios (SIRs).

And it was found that the observed incidence rate of new primary cancers was higher than the expected rates, and the relative risk of second primary cancers was statistically significantly increased in all age groups.

They observed a total of 1,180 second primary cancers in 1,088 persons, which yielded a SIR of 3.3, with the brain as the most common site.

Also, the researchers found that the relative risk for second primary cancers in male survivors was statistically significantly higher than in female survivors.

“This study quantified long-term temporal patterns of increased risk of cancer at specific sites in survivors of childhood cancer. The results may be useful in the screening and care of these individuals,” wrote the authors.

The study has been published in the latest online issue of the Journal of the National Cancer Institute. (ANI)

Algae may harbour SARS cure

Washington, May 21 (ANI): A protein from algae might help in treating Severe Acute Respiratory Syndrome (SARS) infections, suggests a new study.

Researchers from University of Iowa have found that mice treated with the protein, Griffithsin (GRFT), had a 100 percent survival rate after exposure to the SARS coronavirus (SARS-CoV), as compared to a 30 percent survival for untreated mice.

GRFT is believed to exert its anti-viral effects by altering the shape of the sugar molecules that line the virus’ envelope, allowing it to attach to and invade human cells, where it takes over the cells’ reproductive machinery to replicate itself.

Without that crucial ability, the virus is unable to cause disease.

“While preliminary, these results are very exciting and indicate a possible therapeutic approach to future SARS or other coronaviral outbreaks,” said Christine Wohlford-Lenane, senior research assistant at the department of pediatrics University of Iowa and the lead author of the study.

GRFT not only stop the virus from replicating, but also prevented secondary outcomes, such as weight loss, that are associated with infection.

“We are planning future studies to investigate prophylaxis, versus treatment interventions with GRFT, in the SARS mouse model in collaboration with Barry O’Keefe at the National Cancer Institute,” she said.

“In addition, we want to learn whether mice protected from SARS by GRFT develop protective immunity against future infection,” she added.

The research was presented at the American Thoracic Society’s 105th International Conference in San Diego. (ANI)