SEATTLE--(BUSINESS WIRE)--Gilead Sciences, Inc. (Nasdaq: GILD) today announced full results from the second pivotal Phase 3 clinical trial (Study 103) of its Quad once-daily single tablet regimen of elvitegravir, cobicistat, emtricitabine and tenofovir disoproxil fumarate for the treatment of HIV. The study found that the Quad was non-inferior to a protease-based regimen of ritonavir-boosted atazanavir (ATV/r) plus Truvada® (emtricitabine/tenofovir disoproxil fumarate) at 48 weeks of therapy among HIV-1 infected treatment-naïve adults. These data were presented today in a poster session (Abstract #627) at the 19th Conference on Retroviruses and Opportunistic Infections (CROI 2012) taking place in Seattle.