Evidence map›Paper›PMID 22238443›Full record

ArticleJournal of clinical microbiology2012

Genotype MTBDRplus for direct detection of Mycobacterium tuberculosis and drug resistance in strains from gold miners in South Africa.

Susan E Dorman, Violet N Chihota, James J Lewis, Minty van der Meulen, Barun Mathema, Natalie Beylis, Katherine L Fielding, Alison D Grant, Gavin J Churchyard

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Sentinel-Site-Based Surveillance ofAntibiotics (Basel, Switzerland) · 2025
    Article
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  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Diagnostic Performance of the GenoType MTBDRChinese medical journal · 2017
    Article
  16. Article
  17. A performance evaluation of MTBDRplus version 2 for the diagnosis of multidrug-resistant tuberculosis.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2016
    Article
  18. Article
  19. Article
  20. Using Xpert MTB/RIF.Current respiratory medicine reviews · 2013
    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

9 authors at 4 institutions in 3 countries.

Susan E DormanJohns Hopkins University School of Medicine, Baltimore, Maryland, USA. dsusan1@jhmi.edu
Violet N Chihota
James J Lewis
Minty van der Meulen
Barun Mathema
Natalie Beylis
Katherine L Fielding
Alison D Grant
Gavin J Churchyard
Aurum Institute · ZALondon School of Hygiene & Tropical Medicine · GBJohns Hopkins University · USNational Health Laboratory Service · ZA

Funding

Rapid Detection of Mycobacterium tuberculosisK23AI051528 · NIAID · JOHNS HOPKINS UNIVERSITY · PI DORMAN, SUSAN E · 2003 to 2007
$657k
Medical Research Council G0700837NIAID NIH HHS K23 AI051528NIAID NIH HHS R01 AI51528
6 · The paper itself

Abstract

GenoType MTBDRplus is a molecular assay for detection of Mycobacterium tuberculosis and drug resistance. Assay performance as applied directly to consecutive unselected sputum samples has not been established. The objective of this study was to determine the accuracy of the MTBDRplus test for direct detection of M. tuberculosis (in sputum) and for drug resistance in consecutively submitted sputum samples. In this cross-sectional study in South Africa, one sputum specimen from each person suspected of having pulmonary tuberculosis was tested by smear microscopy, direct MTBDRplus, and Mycobacterial Growth Indicator Tube (MGIT) culture with MGIT drug susceptibility testing. MGIT results were the reference standard. We tested 2,510 sputum samples, and 529 (21.1%) were positive for M. tuberculosis by MGIT. Direct MTBDRplus identified M. tuberculosis in 256 of 529 specimens (sensitivity, 48.4%; 95% confidence interval [CI], 44.1, 52.7). The sensitivity of MTBDRplus for M. tuberculosis detection by sputum smear status was as follows: smear negative, 13.7% (95% CI, 9.8, 18.4); smear scanty, 46.2% (95% CI, 19.2, 74.9); smear 1+, 69.1% (95% CI, 55.2, 80.9); smear 2+, 86.3% (95% CI, 73.7, 94.3); smear 3+, 89.8% (95% CI, 83.7, 94.2). Direct MTBDRplus testing was negative for 1,594/1,612 sputum samples that were culture negative for M. tuberculosis (specificity, 98.9%; 95% CI, 98.2, 99.3). For specimens positive for M. tuberculosis by MTBDRplus, this assay's sensitivity and specificity for rifampin resistance were 85.7% (95% CI, 57.2, 98.2) and 96.6% (95% CI, 93.2, 98.6) and for isoniazid resistance they were 62.1% (95% CI, 42.3, 79.3) and 97.9% (95% CI, 94.8, 99.4). For sputum testing, the sensitivity of MTBDRplus is directly related to the specimen's bacillary burden. Our results support recommendations that the MTBDRplus test not be used for direct testing of smear-negative or paucibacillary sputum samples.

Indexed as

GenotypeAdultAntitubercular AgentsBacterial ProteinsCross-Sectional StudiesDNA-Directed RNA PolymerasesFemaleGoldHumansIsoniazidMaleMiddle AgedMiningMolecular Diagnostic TechniquesMultiplex Polymerase Chain ReactionMycobacterium tuberculosisAntitubercular AgentsBacterial ProteinsDNA-Directed RNA PolymerasesGoldIsoniazidRifampinrpoB protein, Mycobacterium tuberculosis

Identifiers

PMID22238443
PMCPMC3318561
OpenAlexW2112087812

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.