AbbVie (NYSE: ABBV) submitted a New Drug Application (NDA) to the Japanese Ministry of Health, Labour and Welfare (MHLW) seeking approval for the company's investigational, all-oral, ribavirin (RBV) and interferon (IFN)-free, 12-week, two direct-acting antiviral treatment of ombitasvir/paritaprevir/ritonavir (OBV/PTV/r), dosed once daily. The submission is for the treatment of patients with genotype 1 (GT1) chronic hepatitis C virus (HCV) infection.
The NDA is supported by the Phase 3 GIFT-I study, which met its primary endpoint, achieving a 95 percent (n=106/112) sustained virologic response rate at 12 weeks post-treatment (SVR12) in the sub-group of previously untreated, non-cirrhotic, adult genotype 1b (GT1b)-infected Japanese patients who were eligible for therapy with IFN and had a high viral load (≥ 100,000 IU/mL). Additionally, two patients without cirrhosis (0.9 percent) discontinued treatment due to adverse events. GIFT-I included a placebo-controlled arm and studied patients with and without compensated cirrhosis, who were new to therapy or treatment-experienced (with IFN and with or without RBV).
"We are pleased to announce the regulatory submission of our two direct-acting hepatitis C antiviral treatment in Japan, which follows on quickly from recent approvals of our three direct-acting antiviral treatment in the U.S., Canada and the European Union," said Scott Brun, M.D., vice president, pharmaceutical development, AbbVie. "This submission is based on a large Phase 3 study in multiple patient types and brings us closer to offering the possibility of cure for patients with chronic genotype 1b hepatitis C infection, the most common form of the disease in the country."
AbbVie studied a two direct-acting antiviral regimen without RBV in Japan due to patient and viral characteristics specific to the Japanese population, including high prevalence of GT1b. In Japan, approximately 1.5 to 2 million people are living with HCV. Genotype 1 is the most common HCV genotype in Japan with 60 to 70 percent of patients infected and, of those, about 95 percent are infected with the GT1b sub-type.