The Foster City, CA-based Gilead said that its experimental drug GS-7977, originally known as PSI-7977 before the acquisition, when combined with ribavirin, cured a group of genotype 1 hepatitis C patients after four weeks of treatment. The clinical study involved hepatitis C patients who either failed to respond to previous therapies or had not been treated before. The genotype 1 is the most common form of HCV in the United States. It affects 70 to 90 percent of the people in this country who have hepatitis C.
Norbert Bischofberger, chief scientific officer at Gilead said patients with genotype 1 hepatitis C had no detectable signs of the virus after treated with GS-7977 combination therapy for a course of close to a month. Previous study showed the drug candidate could also cure patients with genotype 2 and 3 HCV.
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