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Phenotypic hypersusceptibility to multiple protease inhibitors and low replicative capacity in patients who are chronically infected with human immunodeficiency virus type 1

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  • J Martinez-Picado
  • T Wrin
  • SDW Frost
  • B Clotet
  • L Ruiz
  • AJ Leigh Brown
  • CJ Petropoulos
  • NT Parkin

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Original languageEnglish
Pages (from-to)5907-5913
Number of pages7
JournalJournal of Virology
Volume79
Issue number10
DOIs
Publication statusPublished - May 2005

Abstract

Increased susceptibility to the protease inhibitors saquinavir and amprenavir has been observed in human immunodeficiency virus type 1 (HIV-1) with specific mutations in protease (V82T and N88S). Increased susceptibility to ritonavir has also been described in some viruses from antiretroviral agent-naive patients with primary HIV-1 infection in association with combinations of amino acid changes at polymorphic sites in the protease. Many of the viruses displaying increased susceptibility to protease inhibitors also had low replication capacity. In this retrospective study, we analyze the drug susceptibility phenotype and the replication capacity of virus isolates obtained at the peaks of viremia during five consecutive structured treatment interruptions in 12 chronically HIV-1-infected patients. Ten out of 12 patients had at least one sample with protease inhibitor hypersusceptibility (change

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