CD4 and infection: Table 3 and Figure 1 show the percentage of patients with HIV-1 RNA <50 copies/mL over time by baseline HIV-1 subtype. There was no evidence for differences in efficacy of DRV/r at either dose between patients with subtype B and non-B infection. In addition, there was no clear correlation between HIV-1 RNA suppression at week 48 and either the number of active NRTIs used or baseline CD4 count (Table 4).