Evidence map›Paper›PMID 29466946›Full record

ArticleBMC infectious diseases2018

Performance of loop-mediated isothermal amplification assay in the diagnosis of pulmonary tuberculosis in a high prevalence TB/HIV rural setting in Uganda.

Lydia Nakiyingi, Prossy Nakanwagi, Jessica Briggs, Tifu Agaba, Frank Mubiru, Mark Mugenyi, Willy Ssengooba, Moses L Joloba, Yukari C Manabe

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
1.2field-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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  10. TB testing in HIV-positive patients prior to antiretroviral treatment.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 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

9 authors at 5 institutions in 2 countries.

Lydia NakiyingiInfectious Diseases Institute, Makerere University College of Health Sciences, P.O. Box, 7072, Kampala, Uganda. lydiakiyingi@gmail.com.
Prossy NakanwagiBaylor College of Medicine Children's Foundation of Uganda, Kampala, Uganda.
Jessica BriggsDivision of Infectious Diseases, Department of Medicine, University of California, San Francisco, USA.
Tifu AgabaInfectious Diseases Institute, Makerere University College of Health Sciences, P.O. Box, 7072, Kampala, Uganda.
Frank MubiruInfectious Diseases Institute, Makerere University College of Health Sciences, P.O. Box, 7072, Kampala, Uganda.
Mark MugenyiNational Tuberculosis and Leprosy Program, Kiboga District Hospital, Kiboga, Uganda.
Willy SsengoobaDepartment of Microbiology, School of Biomedical Sciences, Makerere University College of Heath Sciences, Kampala, Uganda.
Moses L JolobaDepartment of Microbiology, School of Biomedical Sciences, Makerere University College of Heath Sciences, Kampala, Uganda.
Yukari C ManabeDivision of Infectious Diseases, Department of Medicine, Johns Hopkins University , Baltimore, USA.
Makerere University · UGBaylor College of Medicine Children’s Foundation · UGInfectious Diseases Institute · UGJohns Hopkins University · USUniversity of California, San Francisco · US

Funding

NURTURE:Research Training and Mentoring Program for Career Development of Faculty at Makerere University College of Health SciencesD43TW010132 · FIC · MAKERERE UNIVERSITY COLLEGE OF HEALTH SCIENCES · PI SEWANKAMBO, NELSON K · 2015 to 2019
$4.3M
HIV Co-infections in Uganda: TB, Cryptococcus, and Viral Hepatitis.D43TW009771 · FIC · JOHNS HOPKINS UNIVERSITY · PI CASTELNUOVO, BARBARA, KAMBUGU, ANDREW DDUNGU · 2014 to 2023
$3.3M
FIC NIH HHS D43 TW009771FIC NIH HHS D43TW009771FIC NIH HHS D43 TW010132NIH HHS D43TW010132
6 · The paper itself

Abstract

backgroundSmear microscopy lacks sensitivity especially in HIV co-infection, resulting in undiagnosed tuberculosis (TB) and high mortality. The loop-mediated isothermal amplification (TB-LAMP) assay can be staged with minimal infrastructure, is rapid, low cost and detection can be with the naked eye. We assessed feasibility and performance of Eiken TB-LAMP test at point-of-need in TB diagnosis in a high prevalence TB/HIV rural setting in Uganda.

methodsFrom October 2013-February 2014, TB-LAMP testing was performed on sputum specimens from outpatient presumptive TB adults at a district hospital and two low-level health centers in Kiboga District where smear microscopy is the available routine diagnostic option. TB-LAMP was performed by a technician after a week of training in the district hospital. The technician had no prior experience in the technology. Samples from the low-level health centers were transported to the district hospital for TB-LAMP.

resultsOf the 233 presumptive TB (126 at hospital); 113 (48.5%) were HIV-infected; 129 (55%) male; median age 40 (IQR 30-53). Compared to MTB culture, overall sensitivity and specificity of TB-LAMP were 55.4% (95 CI 44.1-66.3) and 98.0% (95 CI 94.3-99.6) respectively. Among HIV-infected participants, TB-LAMP sensitivity and specificity were 52.3% (95 CI 36.7-67.5%) and 97.1% (95 CI 89.9-99.6) respectively; and 24.4% (95% CI 12.9-39.5) and 98.6% (95% CI 95.1-99.8) respectively among smear-negatives. TB-LAMP sensitivity and specificity were 62.2% (95% CI 44.8-77.5) and 97.8% (95% CI 92.1-99.7) in the hospital setting where central testing occurred compared to 50.0% (95% CI 34.9-65.1) and 98.4% (95% CI 91.2-100) respectively in low-level health centers where specimens were transported centrally.

conclusionsIn this high prevalence TB/HIV rural setting, TB-LAMP performs better than conventional smear microscopy in diagnosis of MTB among presumptive TB patients although the sensitivity is lower than that reported by the World Health Organization. TB-LAMP can easily be performed following a short training period and in absence of sophisticated infrastructure and expertise.

Indexed as

AdultBacteriological TechniquesFemaleHIV InfectionsHumansMaleMiddle AgedMycobacterium tuberculosisNucleic Acid Amplification TechniquesPrevalenceRural PopulationSensitivity and SpecificitySputumTuberculosis, PulmonaryUgandaDiagnosticLAMPMicroscopyRuralTuberculosisUganda

Identifiers

PMID29466946
PMCPMC5822669
OpenAlexW2803729745

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.