SCIENCE

Gene Variants Affect Hepatitis C Treatment, But Link Is Elusive

A year ago, three groups independently found that patients with a particular variant of a gene called IL28B tend to fare better than others in battling hepatitis C virus (HCV). The finding promised new insights into the complex interplay between the immune system and HCV, which is estimated to infect 4 million people in the United States and 170 million worldwide.

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