Evidence map›Paper›PMID 27054344›Full record

ArticlePloS one2016

Comparison of Xpert MTB/RIF Assay and GenoType MTBDRplus DNA Probes for Detection of Mutations Associated with Rifampicin Resistance in Mycobacterium tuberculosis.

Arfatur Rahman, Mahfuza Sahrin, Sadia Afrin, Keith Earley, Shahriar Ahmed, S M Mazidur Rahman, Sayera Banu

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 3 pooled it
6.9field-weighted citation impact, top 3% 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

44 citing papers in PubMed, 3 syntheses or guidelines pooled it, 84 citations in OpenAlex.

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  7. Heliyon · 2024
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  10. Distribution and frequency of common mutations inJournal of clinical tuberculosis and other mycobacterial diseases · 2022
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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

7 authors at 2 institutions in 2 countries.

Arfatur RahmanInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
Mahfuza SahrinInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
Sadia AfrinInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
Keith EarleyOregon Health and Science University, Portland, United States of America.
Shahriar AhmedInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
S M Mazidur RahmanInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
Sayera BanuInternational Center for Diarrheal Disease Research, Dhaka, Bangladesh.
International Centre for Diarrhoeal Disease Research · BDOregon Health & Science University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGeneXpert MTB/RIF (Xpert) and Genotype MTBDRplus (DRplus) are two World Health Organization (WHO) endorsed probe based molecular drug susceptibility testing (DST) methods for rapid diagnosis of drug resistant tuberculosis. Both methods target the same 81 bp Rifampicin Resistance Determining Region (RRDR) of bacterial RNA polymerase β subunit (rpoB) for detection of Rifampicin (RIF) resistance associated mutations using DNA probes. So there is a correspondence of the probes of each other and expected similarity of probe binding.

methodsWe analyzed 92 sputum specimens by Xpert, DRplus and LJ proportion method (LJ-DST). We compared molecular DSTs with gold standard LJ-DST. We wanted to see the agreement level of two molecular methods for detection of RIF resistance associated mutations. The 81bp RRDR region of rpoB gene of discrepant cases between the two molecular methods was sequenced by Sanger sequencing.

resultsThe agreement of Xpert and DRplus with LJ-DST for detection of RIF susceptibility was found to be 93.5% and 92.4%, respectively. We also found 92.4% overall agreement of two molecular methods for the detection of RIF susceptibility. A total of 84 out of 92 samples (91.3%) had agreement on the molecular locus of RRDR mutation by DRplus and Xpert. Sanger sequencing of 81bp RRDR revealed that Xpert probes detected seven of eight discrepant cases correctly and DRplus was erroneous in all the eight cases.

conclusionAlthough the overall concordance with LJ-DST was similar for both Xpert and DRplus assay, Xpert demonstrated more accuracy in the detection of RIF susceptibility for discrepant isolates compared with DRplus. This observation would be helpful for the improvement of probe based detection of drug resistance associated mutations especially rpoB mutation in M. tuberculosis.

Indexed as

Antitubercular AgentsBacterial ProteinsDNA-Directed RNA PolymerasesDNA Mutational AnalysisDNA ProbesDrug Resistance, BacterialExtensively Drug-Resistant TuberculosisHumansMicrobial Sensitivity TestsMycobacterium tuberculosisRifampinSputumAntitubercular AgentsBacterial ProteinsDNA-Directed RNA PolymerasesDNA ProbesRifampinrpoB protein, Mycobacterium tuberculosis

Identifiers

PMID27054344
PMCPMC4824420
OpenAlexW2328501695

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LicenceCC BY
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Registered trials

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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.