Biomarker News and Research

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A biomarker is a biological molecule found in blood, other body fluids, or tissues that is a sign of a normal or abnormal process, or of a condition or disease. A biomarker may be used to see how well the body responds to a treatment for a disease or condition. Also called molecular marker and signature molecule.

Accuracy of PSA screening for detecting prostate cancer

A new study indicates there is no specific PSA value that has both high sensitivity and high specificity for monitoring healthy men for prostate cancer, but rather there is a continuum of prostate cancer risk at all values of PSA, according to a study in the July 6 issue of JAMA: The Journal of the American Medical Association.

6 Jul 2005

New low-cost technology that allows thousands of tumor slices to be screened side-by-side

Scientists at Georgetown University's Lombardi Comprehensive Cancer Center have devised a new low-cost technology that allows thousands of tumor slices to be screened side-by-side, an improvement over current and more expensive methods that can analyze only several hundred tumors at once.

27 Jun 2005

FDA severely limits access to cancer drug Iressa

After Food and Drug Administration (FDA) officials agreed with studies showing lung cancer drug, Iressa, did not help patients live longer, drug company AstraZeneca said it would severely limit access to its drug.

20 Jun 2005

AstraZeneca announces U.S. labeling change to Iressa (gefitinib tablets)

AstraZeneca has announced that after discussions with the U.S. Food and Drug Administration (FDA), the company is making a labeling change to Iressa (gefitinib tablets).

19 Jun 2005

New techniques use mitochondrial DNA as an early indicator for certain types of cancer

A pilot study at the National Institute of Standards and Technology (NIST), in support of the National Cancer Institute's Early Detection Research Network (EDRN), has validated the measurement accuracy of new techniques that use mitochondrial DNA as an early indicator for certain types of cancer.

16 Jun 2005

Claudin-1 regulates cellular transformation and metastatic behavior in colon cancer

Disruption of proteins expressed at the junctures between cells (known as tight junctions) is a hallmark of cancer cell invasion and spread (metastasis).

16 Jun 2005

Inactive gene may explain higher incidence of prostate cancer in African-Americans compared to Caucasians

Among African-Americans with prostate cancer, a tumor-suppressing gene called GSTP1 is inactivated at a rate 3.5 times higher than among Caucasians, according to a study conducted at the San Francisco VA Medical Center (SFVAMC).

16 Jun 2005

Study examines biomarkers for response to erlotinib in glioma

Researchers have found two biomarkers that, in patients with a malignant type of brain tumor called glioblastoma multiforme, were associated with response to the cancer drug erlotinib (Tarceva).

14 Jun 2005

Finding could provide targets for diagnosis, prognosis, therapy of prostate cancer

Researchers led by Dr. Shiv Srivastava from the Center for Prostate Disease Research (CPDR), Uniformed Services University of the Health Sciences (USU), report the groundbreaking discovery of the ETS-Related Gene (ERG) as one of the frequent proto-oncogene overexpressions in prostate cancer cells.

10 Jun 2005

Exercise and weight control reduces odds of developing breast cancer

Women who exercise more and keep their weight under control may dramatically reduce their odds of developing breast cancer, a population-based study by a team of investigators at Meharry Medical College and the Vanderbilt-Ingram Cancer Center suggests.

9 Jun 2005

Diagnostic test for Lou Gehrig's disease

Bowser is director of the ALS Tissue Bank and an Associate Professor of Pathology at the University of Pittsburgh School of Medicine who is using a key piece of biomarker discovery equipment known as SELDI to find new ways to identify and eventually treat Amyotrophic Lateral Sclerosis (ALS), a neurodegenerative disease.

1 Jun 2005

Don’t skip your next mammogram

Melbourne researchers are urging women on Hormone Replacement Therapy (HRT) to be extra vigilant about having regular two-yearly mammograms.

26 May 2005

Pharmaceutical industry faces multiple challenges - future lies in drug pipeline sustainability

High clinical development costs coupled with declining drug discovery success rates are causing productivity levels to fall in the global pharmaceuticals industry. The imminent patent expiry of several major blockbuster drugs and the related rise of cheaper generic alternatives is further exacerbating the situation.

25 May 2005

Researchers have isolated two biomarkers for interstitial cystitis (IC)

The discovery of these biomarkers could lead to a definitive test for IC and have the potential to lead to new therapies. Results of two studies are being presented today at the annual meeting of the American Urological Association (AUA) in San Antonio, and are published in abstracts 69 and 80 of the AUA proceedings.

22 May 2005

Genetic biomarker that may improve quality of life during treatment for colorectal cancer

A Mayo Clinic-led study has revealed a genetic biomarker that can predict which patients are most likely to experience unwanted side effects from one of the most commonly used and highly effective chemotherapy regimens designed to treat colorectal cancer.

16 May 2005

Discovery may pave way for immunotherapies for prostate cancer

Using a common chemotherapy agent, researchers at UCLA's Jonsson Cancer Center and the Department of Pathology and Laboratory Medicine found a way to move an important biomarker expressed in prostate cancer, shaking it loose from one location in a cell – where it could not be accessed by blood – to another, easier to target area.

11 May 2005

Drug lowers inflammatory markers associated with risk for heart attack

A preliminary study suggests that use of a drug that inhibits a specific protein in patients with certain genetic variants that increase their risk for heart attack reduced their levels of inflammatory markers associated with heart attack risk, according to a study in the May 11 issue of JAMA.

10 May 2005