Baseline genotype or phenotype and virologic outcome In a pooled analysis of the 600/100 mg b.i.d. groups of the POWER and DUET trials, the presence at baseline of 3 or more of mutations V11I, V32I, L33F, I47V, I50V, I54L or M, T74P, L76V, I84V or L89V was associated with a decreased virologic response to PREZISTA co-administered with 100 mg ritonavir.