BMY licenses GILD’s Cobicistat as a Reyataz PK-booster (in place of ritonavir): http://finance.yahoo.com/news/BristolMyers-Squibb-and-bw-3684466997.html?x=0&.v=1 Cobicstat is one of the four drugs in GILD’s Quad regimen (the others being Elvitegravir, Viread, and Emtriva).