Evidence map›Paper›PMID 32960272›Full record

Trial reportClinical infectious diseases : an official publication of the Infectious Diseases Society of America2021

CYP2B6 Genotype and Weight Gain Differences Between Dolutegravir and Efavirenz.

Rulan Griesel, Gary Maartens, Maxwell Chirehwa, Simiso Sokhela, Godspower Akpomiemie, Michelle Moorhouse, Francois Venter, Phumla Sinxadi

Erratum issuedOpen access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
11.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 83 citations in OpenAlex.

  1. Weight gain, obesity, and the impact of lifestyle factors among people living with HIV: A systematic review.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025
    Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Efavirenz Pharmacogenetics and Weight Gain Following Switch to Integrase Inhibitor-Containing Regimens.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    Trial
  7. Article
  8. Article
  9. Article
  10. Review
  11. Hidden risks of first-line regimen switching in antiretroviral therapy-treated patients.South African family practice : official journal of the South African Academy of Family Practice/Primary Care · 2025
    Article
  12. Switch to Integrase Strand Transfer Inhibitors During the Menopausal Transition Is Associated With Accelerated Body Composition Change in Women With HIV.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025
    Article
  13. Observational
  14. Article
  15. Article
  16. Article
  17. Weight Gain and Antiretroviral Therapy.Infectious disease clinics of North America · 2024
    Review
  18. Switch to fixed-dose ainuovirine, lamivudine, and tenofovir DFThe Lancet regional health. Western Pacific · 2024
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Rulan GrieselDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.ORCID 0000-0003-3633-2878
Gary MaartensDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.ORCID 0000-0003-3080-6606
Maxwell ChirehwaDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
Simiso SokhelaEzintsha, Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Godspower AkpomiemieEzintsha, Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Michelle MoorhouseEzintsha, Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Francois VenterEzintsha, Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Phumla SinxadiDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
University of Cape Town · ZAUniversity of the Witwatersrand · ZA

Funding

Wellcome Trust 212265/Z/18/Z
6 · The paper itself

Abstract

backgroundDolutegravir is associated with more weight gain than efavirenz. Loss-of-function polymorphisms in CYP2B6 result in higher efavirenz concentrations, which we hypothesized would impair weight gain among people living with human immunodeficiency virus (HIV; PLWH) starting efavirenz-based antiretroviral therapy (ART).

methodsWe studied ART-naive participants from the ADVANCE study randomized to the efavirenz /emtricitabine/tenofovir disoproxil fumarate (TDF) and dolutegravir/emtricitabine/TDF arms. We compared changes in weight and regional fat on DXA from baseline to week 48 between CYP2B6 metabolizer genotypes in the efavirenz arm, and with the dolutegravir arm.

resultsThere were 342 participants in the dolutegravir arm and 168 in the efavirenz arm who consented to genotyping. Baseline characteristics were similar. Weight gain was greater in women than men. In the efavirenz arm CYP2B6 metaboliser genotype was associated with weight gain (P = .009), with extensive metabolizers gaining the most weight, and with changes in regional fat in women, but not in men. Weight gain was similar in CYP2B6 extensive metabolizers in the efavirenz arm and in the dolutegravir arm (P = .836). The following variables were independently associated with weight gain in all participants: baseline CD4 count, baseline human immunodeficiency virus type 1 (HIV-1) RNA, and CYP2B6 metaboliser genotype.

conclusionsCYP2B6 metaboliser genotype was associated with weight gain in PLWH starting efavirenz-based ART. Weight gain was similar between CYP2B6 extensive metabolizers in the efavirenz arm and in the dolutegravir arm, suggesting that impaired weight gain among CYP2B6 slow or intermediate metabolizers could explain the increased weight gain on dolutegravir compared with efavirenz observed in ADVANCE and other studies.

Indexed as

Anti-HIV AgentsHIV InfectionsWeight GainAlkynesBenzoxazinesCyclopropanesCytochrome P-450 CYP2B6DolutegravirFemaleGenotypeHeterocyclic Compounds, 3-RingHumansMaleOxazinesPiperazinesPyridonesAlkynesAnti-HIV AgentsBenzoxazinesCyclopropanesCYP2B6 protein, humanCytochrome P-450 CYP2B6DolutegravirefavirenzHeterocyclic Compounds, 3-RingOxazinesPiperazinesPyridonesCYP2B6dolutegravirdual-energy x-ray absorptiometryefavirenzweight

Identifiers

PMID32960272
PMCPMC8653639
OpenAlexW3087059482

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.