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- W2092013007 abstract "Objective: Bevirimat is the first drug of a new class of antivirals that hamper the maturation of HIV. The objective of this study was to evaluate the sequence variability of the gag region targeted by bevirimat in HIV subtype-B isolates. Methods: Of 484 HIV subtype-B isolates, the gag region comprising amino acids 357–382 was sequenced. Of the patients included, 270 were treatment naive and 214 were treatment experienced. In the latter group, 48 HIV isolates harboured mutations associated with reverse transcriptase inhibitor resistance only, and 166 HIV isolates carried mutations associated with protease inhibitor resistance. Results: In the treatment-naive patient population, approximately 30% harboured an HIV isolate with at least one mutation associated with a reduced susceptibility to bevirimat (H358Y, L363M, Q369H, V370A/M/del and T371del). In HIV isolates with protease inhibitor resistance, the prevalence of bevirimat resistance mutations increased to 45%. Accumulation of mutations at four positions in the bevirimat target region, S368C, Q369H, V370A and S373P, was significantly observed. Mutations associated with bevirimat resistance were detected more frequently in HIV isolates with three or more protease inhibitor resistance mutations than in those with less than three protease inhibitor mutations. Conclusion: Reduced bevirimat activity can be expected in one-third of treatment-naive HIV subtype-B isolates and significantly more in protease inhibitor-resistant HIV. These data indicate that screening for bevirimat resistance mutations before administration of the drug is essential." @default.
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- W2092013007 date "2010-03-13" @default.
- W2092013007 modified "2023-09-23" @default.
- W2092013007 title "High prevalence of bevirimat resistance mutations in protease inhibitor-resistant HIV isolates" @default.
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- W2092013007 doi "https://doi.org/10.1097/qad.0b013e32833160fa" @default.
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