Evidence map›Paper›PMID 19581462›Full record

ArticleAntimicrobial agents and chemotherapy2009

Contribution of dfrA and inhA mutations to the detection of isoniazid-resistant Mycobacterium tuberculosis isolates.

Yu Min Ho, Yong-Jiang Sun, Sin-Yew Wong, Ann S G Lee

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 22% 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, 29 citations in OpenAlex.

  1. Multidrug-ResistantInfection and drug resistance · 2025
    Article
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  8. Drug Resistance Mechanisms in Mycobacterium tuberculosis.Antibiotics (Basel, Switzerland) · 2014
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Yu Min HoDivision of Medical Sciences, National Cancer Centre, Singapore 169610.
Yong-Jiang Sun
Sin-Yew Wong
Ann S G Lee
Tan Tock Seng Hospital · SGNational Cancer Centre Singapore · SGNational University of Singapore · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Screening of 127 isoniazid (INH)-resistant Mycobacterium tuberculosis isolates from Singapore for mutations within the dfrA and inhA genes revealed mutations in 0 and 5 (3.9%) isolates respectively, implying that mutations in dfrA do not contribute to the detection of INH-resistant M. tuberculosis and that mutations within inhA are rare. Thirty-seven (29%) of the 127 isolates had no mutations in any of the genes implicated in INH resistance (katG, kasA, and ndh; inhA and ahpC promoters), suggesting that there are new INH targets yet to be discovered.

Indexed as

Antitubercular AgentsBacterial ProteinsDrug Resistance, BacterialIsoniazidMutationMycobacterium tuberculosisOxidoreductasesAntitubercular AgentsBacterial ProteinsInhA protein, MycobacteriumIsoniazidOxidoreductases

Identifiers

PMID19581462
PMCPMC2737874
OpenAlexW2070435035

What OpenQuestion holds

Textmetadata
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.