Pharmacogenetics News and Research

RSS

The terms pharmacogenomics and pharmacogenetics are often used interchangeably to describe a field of research focused on how genes affect individual responses to medicines. Whether a medicine works well for you—or whether it causes serious side effects—depends, to a certain extent, on your genes.

Just as genes contribute to whether you will be tall or short, black-haired or blond, your genes also determine how you will respond to medicines. Genes are like recipes—they carry instructions for making protein molecules. As medicines travel through your body, they interact with thousands of proteins. Small differences in the composition or quantities of these molecules can affect how medicines do their jobs.

These differences can be due to diet, level of activity, or the medicines a person takes, but they can also be due to differences in genes. By understanding the genetic basis of drug responses, scientists hope to enable doctors to prescribe the drugs and doses best suited for each individual.

Participants in antidepressant drug trials are atypical patients

One reason antidepressant medication treatments do not work as well in real life as they do in clinical studies could be the limited type of study participants selected, researchers at UT Southwestern Medical Center have found.

12 May 2009

Optimizing dosage of blood-thinning drug warfarin

In a large-scale study and an upcoming clinical trial, scientists supported by the National Institutes of Health address one of the trickiest issues in prescribing medicine - how to quickly optimize each patient's dosage of the common blood-thinning drug warfarin.

20 Feb 2009

Ondansetron shown to be a viable treatment option for opioid addiction

Scientists at Stanford University School of Medicine have discovered that a commonly available non-addictive drug can prevent symptoms of withdrawal from opioids with little likelihood of serious side effects.

18 Feb 2009

Genetic biomarker linked to subcutaneous growth hormone dose-response

The interindividual variability of response to subcutaneously applied protein-based drugs remains poorly understood. However, defining genetic markers that can be associated with biological effects of such drugs may improve the understanding of individual variability of response and even drug resistance.

6 Aug 2008

Variations in the serotonin transporter gene may determine who responds best to antidepressant

A new Mayo Clinic study shows that variations in the serotonin transporter gene could explain why some people with depression respond better than others to treatment with citalopram (Celexa), an antidepressant medication.

14 Jul 2008

Global Alliance for Pharmacogenomics

Leaders at the National Institutes of Health and the Center for Genomic Medicine in Japan have signed a letter of intent creating a Global Alliance for Pharmacogenomics.

15 Apr 2008

Marketing of unproven genetic tests a threat to public health

No mechanism currently exists to ensure that genetic tests are supported by adequate evidence before they go to market, or that marketing claims are truthful and not misleading, according to a policy analysis to be published April 4 in Science.

4 Apr 2008

FDA Critical Path Initiative addresses differences between women's and men's health outcomes

Advanced medical technology and analysis methods now being promoted through the Food and Drug Administration's Critical Path Initiative to facilitate the development of drugs, biologics and devices can help address differences between women and men in the detection and treatment of disease, according to a paper published in the Winter 2007 issue of Drug Discovery Today: Technologies.

20 Dec 2007

Lithium commonly used to treat bi-polar disorder increases lifespan in Nematode worms

Nematode worms treated with lithium show a 46 percent increase in lifespan, raising the tantalizing question of whether humans taking the mood affecting drug are also taking an anti-aging medication.

31 Oct 2007

New genetic understanding of multiple sclerosis patients response to Copaxone

A group of Israeli scientists from the Technion - Israel Institute of Technology, the Weizmann Institute of Science, and Teva Pharmaceutical Industries have recently identified genes responsible for the positive response of many multiple sclerosis (MS) patients to the drug Copaxone.

11 Oct 2007

Smoking-cessation may be in the genes

Whether a smoking-cessation drug will enable you to quit smoking may depend on your genes, according to new genotyping research from the Centre for Addiction and Mental Health (CAMH).

18 Sep 2007

Three gene variants discovered that help fight HIV

An international team of researchers has identified three gene variants in the DNA of 486 people infected with HIV that appear to have helped some of the patients fight off the virus and delay the onset of full-blown AIDS.

20 Jul 2007

Inherited genes linked to toxicity of leukemia therapy

St. Jude investigators have discovered inherited variations in certain genes that make children with acute lymphoblastic leukemia (ALL) susceptible to the toxic side effects caused by chemotherapy medications.

23 Jun 2007

Inherited variations in certain genes linked to toxicity of leukemia therapy

Investigators at St. Jude Children's Research Hospital have discovered inherited variations in certain genes that make children with acute lymphoblastic leukemia (ALL) susceptible to the toxic side effects caused by chemotherapy medications.

15 May 2007

Should government negotiate drug prices?

The following is written by Dr. Gary A. Puckrein, PhD, President and Chief Executive Officer of National Minority Quality Forum, on the topic of drug prices and the emerging majority:

20 Apr 2007

Tumour specific drugs may render therapies based on a tumor's anatomical location obsolete

The results of a new study at Washington University School of Medicine in St. Louis could eventually have oncologists removing their specialties from their shingles by making therapy based on a tumor's anatomical location obsolete.

28 Apr 2006

Pharmacogenetics can reduce health care costs

Chances are good that a medication you take is one of several drugs that can be affected by genetic factors, according to researchers at Washington University School of Medicine in St. Louis and the St. Louis College of Pharmacy.

5 Jan 2006

Common gene variation lessens Tamoxifen’s benefit

Researchers have discovered that one of the most commonly prescribed drugs for breast cancer, tamoxifen, may not be as effective for women who inherit a common genetic variation.

19 Dec 2005

Plant toxins in the diets of early humans drove the evolution of taste

Plant toxins in the diets of early humans drove the evolution of a bitter taste receptor better able to detect them, suggests new genetic research by scientists at University College London, Duke University Medical Center, and the German Institute of Human Nutrition.

25 Jul 2005

Genetic variation alters response to anti-clotting drug warfarin

Millions of people take the anticoagulant drug warfarin to prevent harmful clotting after a heart attack, stroke, or major surgery. But the proper dose of warfarin can vary greatly and can be hard to predict.

1 Jun 2005