Evidence map›Paper›PMID 23940699›Full record

ReviewPloS one2013

Month 2 culture status and treatment duration as predictors of tuberculosis relapse risk in a meta-regression model.

Robert S Wallis, Cunshan Wang, Daniel Meyer, Neal Thomas

Registry-linked trialAbstract readReview
In one paragraph

Review in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04930744 (A Prospective, Randomized Open-Label Phase II Study of the Safety and Tolerability of Metformin in Combination With Standard Antimicrobial Treatment of Pulmonary Tuberculosis in People Co-infected With HIV), which is not on this map. Cited by 47 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 6 pooled it
–field-weighted citation impact
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.

NCT04930744 phase2completednot on this mapstarted 2022, after this paper: background citation

A Prospective, Randomized Open-Label Phase II Study of the Safety and Tolerability of Metformin in Combination With Standard Antimicrobial Treatment of Pulmonary Tuberculosis in People Co-infected With HIV

TypeinterventionalSponsorUniversity of Massachusetts, WorcesterRan2022 to 2025Enrolled112ConditionsTuberculosis, Pulmonary Tuberculosis, HIV CoinfectionArmsIsoniazid, Rifampicin, Ethambutol, Pyrazinamide, Metformin hydrochoride
3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 6 syntheses or guidelines pooled it.

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  3. Comparing the Efficacy of Drug Regimens for Pulmonary Tuberculosis: Meta-analysis of Endpoints in Early-Phase Clinical Trials.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2017
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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

4 authors.

Robert S WallisSpecialty Care, Pfizer, Groton, Connecticut, United States of America. rswallis@gmail.com
Cunshan Wang
Daniel Meyer
Neal Thomas

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNew drugs and regimens with the potential to transform tuberculosis treatment are presently in early stage clinical trials.

objectiveThe goal of the present study was to infer the required duration of these treatments.

methodA meta-regression model was developed to predict relapse risk using treatment duration and month 2 sputum culture positive rate as predictors, based on published historical data from 24 studies describing 58 regimens in 7793 patients. Regimens in which rifampin was administered for the first 2 months but not subsequently were excluded. The model treated study as a random effect.

resultsThe model predicted that new regimens of 4 or 5 months duration with rates of culture positivity after 2 months of 1% or 3%, would yield relapse rates of 4.0% or 4.1%, respectively. In both cases, the upper limit of the 2-sided 80% prediction interval for relapse for a hypothetical trial with 680 subjects per arm was <10%. Analysis using this model of published month 2 data for moxifloxacin-containing regimens indicated they would result in relapse rates similar to standard therapy only if administered for ≥5 months.

conclusionsThis model is proposed to inform the required duration of treatment of new TB regimens, potentially hastening their accelerated approval by several years.

Indexed as

Follow-Up StudiesHumansMeta-Analysis as TopicMicrobiological TechniquesMycobacterium tuberculosisPrognosisPyrazinamideRecurrenceRegression AnalysisRifampinRisk FactorsSputumTime FactorsTreatment OutcomeTuberculosis, PulmonaryPyrazinamideRifampin

Identifiers

PMID23940699
PMCPMC3733776

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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.