The impact of HIV-1 subtypes on virologic and immunologic treatment outcomes at the Lagos University Teaching Hospital: A longitudinal evaluation

Ann Abiola Ogbenna, Seema Meloni, Seth Inzaule, Raph L Hamers, Kim Sigaloff, Akin Osibogun, Titilope Adenike Adeyemo, Prosper Okonkwo, Jay Osi Samuels, Phyllis J Kanki, Tobias F Rinke de Wit and Alani Sulaimon Akanmu

PLOS ONE, 2020, vol. 15, issue 8, 1-12

Abstract: Introduction: HIV is a highly diverse virus with significant genetic variability which may confer biologic differences that could impact on treatment outcomes. Materials and methods: We studied the association between HIV subtypes and immunologic and virologic outcomes in a longitudinal cohort of 169 patients on combination antiretroviral therapy. Participants were followed up for 5 years. Demographic data, CD4 cell count and viral loads (VL) were extracted from medical records. Whole protease gene and codon 1–300 of the reverse transcriptase gene were sequenced and analysed. Results: Sixty-four percent of participants were females with a median age of 35 years. Twelve different subtypes were observed, the commonest being CRF 02_AG (55.0%) and subtypes G (23.1%). All subtypes showed steady rise in CD4 count and there was no difference in proportion who achieved CD4+ cell count rise of ≥100 cells/μL from baseline within 12 months’ post-initiation of ART, or ≥350 cells/μL at 60 months’ post-initiation. Median time to attaining a rise of ≥350 cells/μL was 24 months (6–48 months). The proportion that achieved undetectable VL at month 6 and 12 post-initiation of ART were comparable across subtypes. At end of 5th year, there was no statistical difference in proportion with virologic failure. Conclusion: No association between HIV subtypes and immunologic or virologic response to therapy was observed, suggesting that current first-line ART may have similar efficacy across subtype predominating in South-West Nigeria.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0238027

DOI: 10.1371/journal.pone.0238027

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