U.S.A; Gilead Announces SVR12 Rates From Phase 3 Study Evaluating Harvoni® for the Treatment of Chronic Hepatitis C in Patients Co-Infected With HIV

SEATTLE--(BUSINESS WIRE)--Feb. 26, 2015-- Gilead Sciences, Inc. (NASDAQ:GILD) today announced results from a Phase 3 study, ION-4, evaluating the once-daily single tablet regimen Harvoni® (ledipasvir 90 mg/sofosbuvir 400 mg) for the treatment of genotypes 1 or 4 chronic hepatitis C virus (HCV) infection among patients co-infected with HIV. In the trial, 96 percent (n=321/335) of HCV patients achieved a sustained virologic response 12 weeks after completing therapy (SVR12). Patients who achieve SVR12 are considered cured of HCV infection. These data were presented in a late-breaker oral session (Session 152LB) at the 22nd Conference on Retroviruses and Opportunistic Infections (CROI) in Seattle.

“This trial provides strong evidence that people who are co-infected with HIV can achieve very high rates of hepatitis C cure with a combination direct-acting antiviral regimen,” said Susanna Naggie, MD, MHS, Director of Infectious Diseases Research at Duke Clinical Research Institute and Principal Investigator for the ION-4 study. “These high cure rates were observed in most of the historically difficult-to-treat sub-populations, including those who failed previous treatment and those with cirrhosis. We are greatly encouraged by these findings.”

ION-4 is a Phase 3, multicenter, open-label study investigating the efficacy, safety and tolerability of Harvoni treatment for 12 weeks in 335 patients with HCV genotype 1a (75 percent), 1b (23 percent) or 4 (2 percent) and HIV-1 co-infection. The study included HCV treatment-naïve (45 percent) and treatment-experienced (55 percent) patients, including patients with compensated cirrhosis (20 percent), whose HIV was suppressed using one of three HIV antiretroviral (ARV) regimens: tenofovir and emtricitabine with efavirenz (Atripla®), raltegravir or rilpivirine (Complera®).

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