FOSTER CITY, Calif.--(BUSINESS WIRE)--Gilead Sciences, Inc. (Nasdaq:GILD) today announced that it has begun enrolling patients in a Phase III clinical trial of its investigational antiretroviral agent elvitegravir (GS 9137), a novel oral integrase inhibitor that is being evaluated for the treatment of HIV-1 infection. The study is designed to assess the non-inferiority of ritonavir-boosted elvitegravir, dosed once daily, compared to raltegravir (Isentress®), another integrase inhibitor that is dosed twice daily. The study will enroll 700 HIV-infected, treatment-experienced patients at approximately 125 sites in the United States and Puerto Rico. A second Phase III study with a similar design involving 700 HIV-infected, treatment-experienced patients will be initiated later this year in Europe, Canada and Australia.
