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J Med Virol. 2007 Mar;79(3):207-11.

Relationship between mutations in HIV-1 RNase H domain and nucleoside reverse transcriptase inhibitors resistance mutations in naïve and pre-treated HIV infected patients.

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  • 1Department of Virology, Pitié-Salpêtrière Hospital and UPRES EA 2387, Université Pierre et Marie Curie, Paris, France.


Recent studies have highlighted the need of investigating the in vivo role of ribonuclease H (RNase H) in nucleoside reverse transcriptase inhibitors (NRTIs) resistance. The prevalence of RNase H mutations in naive and in NRTI pre-treated patients in regimen failure were compared and some specific associations between NRTI resistance mutations and RNase H mutations were determined. Four positions were mutated more frequently in pre-treated patients than in naive patients: L469T/I/M/H, T470P/S/E/K, A554T/L/K, and K558R/G/E. Mutations at position K558 were also associated with the number of thymidine analog mutations (TAMs). These results suggest that these mutations could play a role in NRTI resistance.

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