Monday, January 21, 2013

Study Finds How Genes That Cause Illness Work

It has been one of the toughest problems in genetics. How do investigators figure out not just what genes are involved in causing a disease, but what turns those genes on or off? What makes one person with the genes get the disease and another not?
Drew Angerer/The New York Times
Dr. Andrew Feinberg
Now, in a pathbreaking paper, researchers at the Johns Hopkins University School of Medicine and the Karolinska Institute in Sweden report a way to evaluate one gene-regulation system: chemical tags that tell genes to be active or not. Their test case was of patients with rheumatoid arthritis, a crippling autoimmune disease that affects 1.5 million Americans.

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