Predicted antiviral activity of tenofovir versus abacavir in combination with a cytosine analogue and the integrase inhibitor dolutegravir in HIV-1-infected South African patients initiating or failing first-line ART

Objectives: The WHO recently recommended the use of a new first-line ART containing dolutegravir. We investigated the efficacy of NRTI backbones (tenofovir or abacavir with a cytosine analogue) in low- and middle-income countries where there is significant prior exposure to antiretrovirals and drug resistance to NRTIs.

Methods: Within the treatment-as-prevention study in South Africa, we selected participants with available next-generation sequencing (NGS) data for the HIV-1 pol gene at trial entry; they were either ART initiators (n = 1193) or already established on ART (n = 94). NGS of the HIV-1 pol gene was carried out using MiSeq technology; reverse transcriptase drug resistance mutations (DRMs) were detected at 5% (DRM5%) and 20% (DRM20%) for all 1287 participants. Genotypic susceptibility was assessed using the Stanford HIVDB resistance interpretation algorithm.

Results: NRTI DRM20% and DRM5% were detected among 5/1193 (0.4%) and 9/1193 (0.8%) of ART initiators, respectively. There was tenofovir exposure in 73/94 (77.7%) of those established on ART, with full susceptibility to abacavir in 57/94 (60.6%) and 56/94 (59.6%) for DRM20% and DRM5%, respectively, while 67/94 (71.3%) and 64/94 (68.1%) were fully susceptible to tenofovir, respectively. The differences between tenofovir and abacavir were not statistically significant at the 20% or 5% variant level (P = 0.16 and 0.29, respectively). NGS detection of variants at the 5% level increased detection of K65R in both naive and treated groups. One of 607 integrase sequences carried a DRM20% (Q148R).

Conclusions: Dolutegravir with a cytosine analogue plus tenofovir or abacavir appears to have similar efficacy in South Africans naive to ART. NGS should be considered in HIV drug resistance surveillance.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:74

Enthalten in:

The Journal of antimicrobial chemotherapy - 74(2019), 2 vom: 01. Feb., Seite 473-479

Sprache:

Englisch

Beteiligte Personen:

Derache, Anne [VerfasserIn]
Iwuji, Collins C [VerfasserIn]
Danaviah, Siva [VerfasserIn]
Giandhari, Jennifer [VerfasserIn]
Marcelin, Anne-Geneviève [VerfasserIn]
Calvez, Vincent [VerfasserIn]
de Oliveira, Tulio [VerfasserIn]
Dabis, François [VerfasserIn]
Pillay, Deenan [VerfasserIn]
Gupta, Ravindra K [VerfasserIn]

Links:

Volltext

Themen:

8J337D1HZY
99YXE507IL
Abacavir
Anti-HIV Agents
Comparative Study
Cytosine
DKO1W9H7M1
Dideoxynucleosides
Dolutegravir
Drug Combinations
HIV Integrase Inhibitors
Heterocyclic Compounds, 3-Ring
Journal Article
Oxazines
Piperazines
Pyridones
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
Tenofovir
WR2TIP26VS

Anmerkungen:

Date Completed 07.05.2020

Date Revised 08.04.2024

published: Print

Citation Status MEDLINE

doi:

10.1093/jac/dky428

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM290136202