Background: Dolutegravir (DTG) plus boosted darunavir (bDRV) is a compact, adherence-friendly salvage regimen with the highest genetic barrier to HIV-1 resistance.
Objective: Aim of the present study is to assess the long term (96-week) safety and efficacy of DTG + bDRV in a of multidrug-experienced HIV-1 infected patients, simplifying or building rescue regimens.
Methods: All HIV-1-infected subjects from eleven Italian centers switched to DTG + bDRV between March 2014 and September 2015 were included and followed for minimum 96 weeks.
Results: The cohort comprises 130 subjects, switched from 42 different, complex or at least twice-daily regimens, mainly for simplification (44.6%), viral failure (30.0%) or toxicity (16.6%). At baseline 118 had documented resistance to 1-5 antiretroviral classes and 12 lacked genotypic results either for historical reasons or for problems with primer annealing; 52 (40%) had uncontrolled viral replication, three above 500.000 copies/mL. At week 96 two showed ≥50 HIV-1 RNA copies/mL, 23 had 1-49 copies/mL and 101 had no virus detected. The proportion of subjects presenting abnormal values at baseline significantly decreased for serum glucose, creatinine, AST, total cholesterol and triglycerides.
Conclusions: These long-term data confirm the reliability of the two-drug regimen consisting of bDRV plus DTG in salvage settings in HIV-1 infection.
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