FOSTER CITY, Calif.--(BUSINESS WIRE)--Gilead Sciences, Inc. (Nasdaq:GILD) today announced the completion of a Phase II clinical trial of GS 9137, a novel oral HIV integrase inhibitor. The clinical study met its primary endpoint of non-inferiority in viral load reduction in HIV-positive patients receiving 50 mg or 125 mg of GS 9137 once daily, each boosted with 100 mg of ritonavir, in combination with an optimized background antiretroviral regimen compared to a boosted comparator protease inhibitor regimen (p=0.02 for the 125 mg arm).