Evidence map›Paper›PMID 23732043›Full record

ArticleBMC infectious diseases2013

Factors affecting antiretroviral pharmacokinetics in HIV-infected women with virologic suppression on combination antiretroviral therapy: a cross-sectional study.

Mona Rafik Loutfy, Sharon Lynn Walmsley, Marina Barbara Klein, Janet Raboud, Alice Lin-In Tseng, Sandra Lauren Blitz, Neora Pick, Brian Conway, Jonathan Benjamin Angel, Anita Rochelle Rachlis and 9 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00433979 (Predictors of Antiretroviral Pharmacokinetics in HIV-infected Women With Virologic Suppression on Combination Antiretroviral Therapy), which is not on this map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.7field-weighted citation impact, top 29% 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.

NCT00433979 completednot on this map

Predictors of Antiretroviral Pharmacokinetics in HIV-infected Women With Virologic Suppression on Combination Antiretroviral Therapy

TypeobservationalSponsorWomen's College HospitalRan2007 to 2009Enrolled88ConditionsHIV InfectionsArmsantiretroviral treatment
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
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

19 authors at 14 institutions in 1 country.

Mona Rafik LoutfyWomen's College Research Institute, Women's College Hospital, 790 Bay Street, Room 736, Toronto, Ontario M5G 2N8, Canada. mona.loutfy@wchospital.ca
Sharon Lynn Walmsley
Marina Barbara Klein
Janet Raboud
Alice Lin-In Tseng
Sandra Lauren Blitz
Neora Pick
Brian Conway
Jonathan Benjamin Angel
Anita Rochelle Rachlis
Kevin Gough
Jeff Cohen
David Haase
David Burdge
Fiona Mary Smaill
Alexandra de Pokomandy
Hugues Loemba
Sylvie Trottier
Charles Jean la Porte
B.C. Women's Hospital & Health Centre · CAMcGill University Health Centre · CAUniversity Health Network · CAUniversity of Ottawa · CAUniversity of Toronto · CACentre hospitalier universitaire de Québec · CADalhousie University · CAHealth Sciences Centre · CAMcMaster University · CAOttawa Hospital Research InstitutePublic Health Ontario · CASt. Michael's Hospital · CAUniversity of British Columbia · CAWindsor Regional Hospital · CA

Funding

Canadian Institutes of Health Research HBF - 90187
6 · The paper itself

Abstract

backgroundAlthough some studies show higher antiretroviral concentrations in women compared to men, data are limited. We conducted a cross-sectional study of HIV-positive women to determine if protease inhibitor (PI) and non-nucleoside reverse transcriptase inhibitor (NNRTI) C(min) and Cmax values were significantly different than historical general population (predominantly male) averages and to evaluate correlates of higher concentrations.

methodsHIV-positive women with virologic suppression (viral load < 50copies/mL) on their first antiretroviral regimen were enrolled. Timed blood samples for C(min) and Cmax were drawn weekly for 3 weeks. The ratio of each individual's median C(min) and Cmax to the published population mean values for their PI or NNRTI was calculated and assessed using Wilcoxon sign-rank. Intra- and inter-patient variability of antiretroviral drug levels was assessed using coefficient of variation and intra-class correlation. Linear regression was used to identify correlates of the square root-transformed C(min) and Cmax ratios.

resultsData from 82 women were analyzed. Their median age was 41 years (IQR=36-48) and duration of antiretrovirals was 20 months (IQR=9-45). Median antiretroviral C(min) and Cmax ratios were 1.21 (IQR=0.72-1.89, p=0.003) (highest ratios for nevirapine and lopinavir) and 0.82 (IQR=0.59-1.14, p=0.004), respectively. Nevirapine and efavirenz showed the least and unboosted atazanavir showed the most intra- and inter-patient variability. Higher CD4+ count correlated with higher C(min). No significant correlates for Cmax were found.

conclusionsCompared to historical control data, C(min) in the women enrolled was significantly higher whereas Cmax was significantly lower. Antiretroviral C(min) ratios were highly variable within and between participants. There were no clinically relevant correlates of drug concentrations.

trial registrationNCT00433979.

Indexed as

AdultAlkynesAnti-Retroviral AgentsAtazanavir SulfateBenzoxazinesCross-Sectional StudiesCyclopropanesDrug Therapy, CombinationFemaleHIV InfectionsHumansLinear ModelsMiddle AgedNevirapineOligopeptidesPyridinesAlkynesAnti-Retroviral AgentsAtazanavir SulfateBenzoxazinesCyclopropanesefavirenzNevirapineOligopeptidesPyridines

Identifiers

PMID23732043
PMCPMC3679788
OpenAlexW2143415894

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.