HIV medicine · 2025
Real-world efficacy of bictegravir/emtricitabine/tenofovir alafenamide regimen in patients infected with HIV-1 sub-subtype A6 harbouring the L74I mutation.
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Orlova-Morozova Elena, Kireev Dmitry, Kirichenko Alina, Bobkov Vyacheslav, Antonova Anastasiya, Yapparov Rafael, Bobkova Marina
Аннотация
OBJECTIVES: This study aimed to evaluate the effectiveness of bictegravir (BIC)-based antiretroviral therapy (ART) against HIV-1 sub-subtype A6 viruses carrying the L74I polymorphic mutation in integrase.
METHODS: A total of 100 ART-naive people living with HIV from the Moscow Regional AIDS Center were enrolled between May and July 2023. HIV-1 subtypes and baseline drug resistance mutations were analysed prior to treatment initiation. All patients began a first-line ART regimen and were followed for 40-48 weeks, at which point viral load (VL) was assessed.
RESULTS: HIV-1 sub-subtype A6 was identified in 78% of people living with HIV; among these, the L74I mutation was present in 97.3%. Of those carrying the mutation, only one patient experienced treatment failure, attributed to very low adherence.
CONCLUSIONS: The BIC/FTC/TAF regimen is fully effective in treatment-naive people living with HIV infected with HIV-1 sub-subtype A6 harbouring the L74I integrase mutation. These findings support the continued use of second-generation integrase strand transfer inhibitor (INSTI)-based regimens for individuals with this HIV-1 subtype.
METHODS: A total of 100 ART-naive people living with HIV from the Moscow Regional AIDS Center were enrolled between May and July 2023. HIV-1 subtypes and baseline drug resistance mutations were analysed prior to treatment initiation. All patients began a first-line ART regimen and were followed for 40-48 weeks, at which point viral load (VL) was assessed.
RESULTS: HIV-1 sub-subtype A6 was identified in 78% of people living with HIV; among these, the L74I mutation was present in 97.3%. Of those carrying the mutation, only one patient experienced treatment failure, attributed to very low adherence.
CONCLUSIONS: The BIC/FTC/TAF regimen is fully effective in treatment-naive people living with HIV infected with HIV-1 sub-subtype A6 harbouring the L74I integrase mutation. These findings support the continued use of second-generation integrase strand transfer inhibitor (INSTI)-based regimens for individuals with this HIV-1 subtype.