Evidence map›Paper›PMID 34254635›Full record

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

Treatment Effect Measures for Culture Conversion Endpoints in Phase IIb Tuberculosis Treatment Trials.

Isabelle R Weir, Sean Wasserman

Open access · greenAbstract readSystematic Review
In one paragraph

Synthesis 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. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.2field-weighted citation impact, top 46% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. 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

2 authors at 2 institutions in 2 countries.

Isabelle R WeirCenter for Biostatistics in AIDS Research in the Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.ORCID 0000-0002-5098-0671
Sean WassermanWellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
Cancer Research And Biostatistics · USUniversity of Cape Town · ZA

Funding

Statistical and Data Management Center (SDMC), AIDS Clinical Trials Group (ACTG)UM1AI068634 · NIAID · HARVARD UNIVERSITY D/B/A HARVARD SCHOOL OF PUBLIC HEALTH · PI Marlene Ann Cooper, Michael David Hughes · 2011 to 2026
$246.6M
Characterizing the pharmacokinetics of high dose rifampicin and linezolid in a randomized controlled trial for HIV-associated tuberculous meningitisK43TW011421 · FIC · UNIVERSITY OF CAPE TOWN · PI WASSERMAN, SEAN ADAM · 2019 to 2022
$404k
FIC NIH HHS K43 TW011421NIAID NIH HHS UM1 AI068634Wellcome Trust 104803Wellcome Trust 203135Wellcome Trust 203135/Z/16/Z
6 · The paper itself

Abstract

Phase IIb trials of tuberculosis therapy rely on early biomarkers of treatment effect. Despite limited predictive ability for clinical outcomes, culture conversion, the event in which an individual previously culture positive for Mycobacterium tuberculosis yields a negative culture after initiating treatment, is a commonly used endpoint. Lack of consensus on how to define the outcome and corresponding measure of treatment effect complicates interpretation and limits between-trial comparisons. We review common analytic approaches to measuring treatment effect and introduce difference in restricted mean survival times as an alternative to identify faster times to culture conversion and express magnitude of effect on the time scale. Findings from the PanACEA MAMS-TB trial are reanalyzed as an illustrative example. In a systematic review we demonstrate variability in analytic approaches, sampling strategies, and outcome definitions in phase IIb tuberculosis trials. Harmonization would allow for larger meta-analyses and may help expedite advancement of new tuberculosis therapeutics.

Indexed as

Mycobacterium tuberculosisTuberculosisTuberculosis, PulmonaryAntitubercular AgentsHumansSpecimen HandlingTreatment OutcomeAntitubercular Agentsclinical trialsphase IIrandomized controlled trialssurvival analysistuberculosis

Identifiers

PMID34254635
PMCPMC8664460
OpenAlexW3180089930

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.