Alle patienter i dette studie havde tidligere oplevet behandlingssvigt på et proteasehæmmerregime (defineret som plasma HIV- 1 RNA som aldrig kom under 1. 000 kopier/ ml efter mindst 12 konsekutive ugers terapi, eller som initial suppression af HIV- 1 RNA med efterfølgende rebound til ≥ 1. 000 kopier/ ml).
All patients in this study had failed treatment with a previous protease inhibitor regimen (defined as plasma HIV-1 RNA that never went below 1,000 copies/ ml after at least 12 consecutive weeks of therapy, or initial suppression of HIV-1 RNA which subsequently rebounded to ≥ 1,000 copies/ ml).