Evidence map›Paper›PMID 22293461›Full record

ArticleAntiviral therapy2012

Low rates of nucleoside reverse transcriptase inhibitor resistance in a well-monitored cohort in South Africa on antiretroviral therapy.

Carole L Wallis, Maria A Papathanasopolous, Matthew Fox, Francesca Conradie, Prudence Ive, Catherine Orrell, Jennifer Zeinecker, Ian Sanne, Robin Wood, James McIntyre and 2 more

Open access · greenAbstract read
In one paragraph

Article in Antiviral therapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 13% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Frequent emergence of N348I in HIV-1 subtype C reverse transcriptase with failure of initial therapy reduces susceptibility to reverse-transcriptase inhibitors.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2012
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Carole L WallisUniversity of the Witwatersrand, Johannesburg, South Africa. cwallis@mweb.co.za
Maria A Papathanasopolous
Matthew Fox
Francesca Conradie
Prudence Ive
Catherine Orrell
Jennifer Zeinecker
Ian Sanne
Robin Wood
James McIntyre
Wendy Stevens
CIPRA-SA project 1 study team
University of the Witwatersrand · ZAUniversity of Cape Town · ZAAnova Health Institute · ZABoston University · US

Funding

The effect of ART on rates and transmission of TBU19AI053217 · NIAID · WITS HEALTH CONSORTIUM (PTY), LTD · PI MCINTYRE, JAMES ALASDAIR · 2002 to 2011
$44.9M
Rates, Predictors and Mortality Impact of Losses from HIV Care in South AfricaK01AI083097 · NIAID · BOSTON UNIVERSITY MEDICAL CAMPUS · PI FOX, MATTHEW ALEXANDER PEASE · 2009 to 2013
$615k
NIAID NIH HHS K01 AI083097NIAID NIH HHS U19 AI053217NIAID NIH HHS U19 AI53217-01
6 · The paper itself

Abstract

backgroundThe emergence of complex HIV-1 drug resistance mutations has been linked to the duration of time patients are on a failing antiretroviral drug regimen. This study reports on resistance profiles in a closely monitored subtype C infected cohort.

methodsA total of 812 participants were enrolled into the CIPRA-SA 'safeguard the household' study, viral loads were determined at 12-weekly intervals for 96 weeks. Virological failure was defined as either a <1.5 log decrease in viral load at week 12 or two consecutive viral load measurements of >1,000 RNA copies/ml after week 24. Regimens prescribed were in line with the South African roll-out programme (stavudine, lamivudine, efavirenz or nevirapine). Viral RNA was extracted from patients with virological failure, and pol reverse-transcriptase PCR and sequence analysis were performed to determine drug-resistant mutations.

resultsVirological failure was observed in 83 participants on the first-line regimen during the study period, of which 61 (73%) had HIV-1 drug-resistant mutations. The M184V mutation was the most frequent (n=46; 65%), followed by K103N (46%) and Y181C (21%). Thymidine analogue mutations were infrequent (1%) and Q151M was not observed.

conclusionsDrug resistance profiles were less complex than has been previously reported in South Africa using the same antiretroviral drug regimens. These data suggest that frequent viral load monitoring limits the level and complexity of resistance observed in HIV-1 subtype C, preserving susceptibility to second-line options.

Indexed as

AdultAlkynesAnti-HIV AgentsAntiretroviral Therapy, Highly ActiveBenzoxazinesCD4 Lymphocyte CountCyclopropanesDrug Resistance, ViralFemaleGenotypeHIV-1HIV InfectionsHumansLamivudineMaleReverse Transcriptase InhibitorsAlkynesAnti-HIV AgentsBenzoxazinesCyclopropanesefavirenzLamivudineReverse Transcriptase InhibitorsRNA, ViralStavudine

Identifiers

PMID22293461
PMCPMC3600633
OpenAlexW59158363

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.