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Home / Publications / Mutations selected in HIV-2-infected patients failing a regimen including atazanavir

Mutations selected in HIV-2-infected patients failing a regimen including atazanavir

  • Authors: Aleixo MJ, Camacho RJ, Cavaco-Silva J, Cunha C, Faria D, Gomes P, Goncalves MF, Valadas E, Van Laethem K, Vandamme AM
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/22977160

Objectives

To investigate mutations selected in viruses from HIV-2-infected patients failing a highly active antiretroviral treatment (HAART) regimen including atazanavir/ritonavir.

Methods

Twenty-eight HIV-2-infected patients previously exposed to atazanavir/ritonavir and failing therapy were studied. The protease (PR) gene was amplified and sequenced, and mutations emerging under atazanavir/ritonavir selective pressure were reported.

Results

The I50L mutation emerged in 4 out of 28 HIV-2-infected patients failing a HAART regimen including atazanavir/ritonavir. Besides I50L, four PR mutations previously associated with protease inhibitor resistance (I54L, I64V, V71I and I82F) and six PR mutations of unknown impact (V10I, E37D, S43T, K45R, I75V and F85L) in HIV-2 were also identified in this small group of patients.

Conclusions

Several mutations were associated with virological failure of a regimen including atazanavir/ritonavir in HIV-2-infected patients, including I50L for the first time. It should be included in HIV-2 algorithms for interpretation of genotypic resistance data, and taken into account when making therapeutic decisions for HIV-2-infected patients.

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About GHTM

GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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