Evidence map›Paper›PMID 31719625›Full record

ArticleScientific reports2019

A Comparative Evaluation of the New Genexpert MTB/RIF Ultra and other Rapid Diagnostic Assays for Detecting Tuberculosis in Pulmonary and Extra Pulmonary Specimens.

John Osei Sekyere, Nontobeko Maphalala, Lesibana A Malinga, Nontombi M Mbelle, Nontuthuko E Maningi

Open access · goldAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the 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
5.1field-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

47 citing papers in PubMed, 6 syntheses or guidelines pooled it, 74 citations in OpenAlex.

  1. Pooled it
  2. Diagnostic accuracy of Xpert MTB/RIF Ultra for detecting pulmonary tuberculosis and rifampicin resistance: a systematic review and meta-analysis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
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  13. Diagnostic yield of Xpert MTB/RIF, Xpert MTB/RIF Ultra, and Truenat MTB assays on non-pulmonary samples from suspected cases of extra-pulmonary tuberculosis (EPTB).European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
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  14. Sensitivity and specificity of Gene Xpert Ultra in extrapulmonary tuberculosis (EPTB).Lung India : official organ of Indian Chest Society · 2025
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  17. Evidence ofFrontiers in veterinary science · 2025
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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

5 authors at 3 institutions in 1 country.

John Osei SekyereDepartment of Medical Microbiology, University of Pretoria, 0084, Pretoria, South Africa.ORCID http://orcid.org/0000-0002-9508-984X
Nontobeko MaphalalaDepartment of Medical Microbiology, University of Pretoria, 0084, Pretoria, South Africa.
Lesibana A MalingaSouth African Medical Research Council, TB Platform Unit, 0084, Pretoria, South Africa.
Nontombi M MbelleDepartment of Medical Microbiology, University of Pretoria, 0084, Pretoria, South Africa.
Nontuthuko E ManingiDepartment of Medical Microbiology, University of Pretoria, 0084, Pretoria, South Africa. nontuthuko.maningi@up.ac.za.ORCID http://orcid.org/0000-0001-5089-7678
University of Pretoria · ZANational Health Laboratory Service · ZASouth African Medical Research Council · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Studies evaluating the new GeneXpert Ultra with other rapid diagnostic assays are limited, particularly in different geographical settings. The performance of the GeneXpert Ultra, the GeneXpert G4, the Line probe assays (LPA) and auramine smear microscopy in detecting TB in pulmonary and extra-pulmonary samples were thus evaluated. Remnants (n = 205 samples) of pulmonary (n = 125 samples) and extra-pulmonary (n = 80 samples) specimens from TB suspects were prospectively collected. Each sample was divided for diagnosis using microscopy, GeneXpert MTB/RIF assays, and LPA; these were all comparatively evaluated, using the MGIT 960 culture as a gold standard. The sensitivity and specificity of microscopy, Xpert Ultra, Xpert G4 and MTBDRplus (ver 2) in pulmonary samples were respectively: 82.00% and 90.28%; 88.00% and 58.57%; 79.59% and 90.28%; 80.00% and 11.11%. For extra-pulmonary specimen, the sensitivity and specificity were respectively: 53.85% and 98.51%; 69.23% and 49.25%; 50.00% and 97.01%; 69.23% and 25.37%. The new and improved GeneXpert Ultra assay was more sensitive than GeneXpert G4 and LPA in both pulmonary and extra pulmonary samples, albeit with lower specificity than the GeneXpert G4. The auramine and LPA tests were also highly sensitive, although the LPA was less specific.

Indexed as

HumansMolecular Diagnostic TechniquesMycobacterium tuberculosisPredictive Value of TestsProspective StudiesReal-Time Polymerase Chain ReactionROC CurveTuberculosis, Pulmonary

Identifiers

PMID31719625
PMCPMC6851384
OpenAlexW2983093146

What OpenQuestion holds

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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.