Evidence map›Paper›PMID 32517725›Full record

ArticleBMC infectious diseases2020

A blood RNA transcript signature for TB exposure in household contacts.

Philip Kam Weng Kwan, Balamurugan Periaswamy, Paola Florez De Sessions, Wenwei Lin, James S Molton, Claire M Naftalin, Ahmad Nazri Mohamed Naim, Martin L Hibberd, Nicholas I Paton

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 29% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
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  8. Article
  9. Th9 cells provide protective TB immunity.Frontiers in immunology · 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

9 authors at 3 institutions in 2 countries.

Philip Kam Weng KwanDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block Level 10, 1E Kent Ridge Road, Singapore, 119228, Singapore.
Balamurugan PeriaswamyGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Paola Florez De SessionsGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Wenwei LinDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block Level 10, 1E Kent Ridge Road, Singapore, 119228, Singapore.
James S MoltonDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block Level 10, 1E Kent Ridge Road, Singapore, 119228, Singapore.
Claire M NaftalinDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block Level 10, 1E Kent Ridge Road, Singapore, 119228, Singapore.
Ahmad Nazri Mohamed NaimGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Martin L HibberdGenome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore.
Nicholas I PatonDepartment of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block Level 10, 1E Kent Ridge Road, Singapore, 119228, Singapore. nick_paton@nuhs.edu.sg.ORCID http://orcid.org/0000-0002-7003-9838
Agency for Science, Technology and Research · SGNational University of Singapore · SGUniversity of London · GB

Funding

National Medical Research Council NMRC/CG/013/2013National Medical Research Council NMRC/CSA/0050/2013National Medical Research Council NMRC/TCR/011-NUHS/2014
6 · The paper itself

Abstract

backgroundCurrent tools for diagnosing latent TB infection (LTBI) detect immunological memory of past exposure but are unable to determine whether exposure is recent. We sought to identify a whole-blood transcriptome signature of recent TB exposure.

methodsWe studied household contacts of TB patients; healthy volunteers without recent history of TB exposure; and patients with active TB. We performed whole-blood RNA sequencing (in all), an interferon gamma release assay (IGRA; in contacts and healthy controls) and PET/MRI lung scans (in contacts only). We evaluated differentially-expressed genes in household contacts (log2 fold change ≥1 versus healthy controls; false-discovery rate < 0.05); compared these to differentially-expressed genes seen in the active TB group; and assessed the association of a composite gene expression score to independent exposure/treatment/immunological variables.

resultsThere were 186 differentially-expressed genes in household contacts (n = 26, age 22-66, 46% male) compared with healthy controls (n = 5, age 29-38, 100% male). Of these genes, 141 (76%) were also differentially expressed in active TB (n = 14, age 27-69, 71% male). The exposure signature included genes from inflammatory response, type I interferon signalling and neutrophil-mediated immunity pathways; and genes such as BATF2 and SCARF1 known to be associated with incipient TB. The composite gene-expression score was higher in IGRA-positive contacts (P = 0.04) but not related to time from exposure, isoniazid prophylaxis, or abnormalities on PET/MRI (all P > 0.19).

conclusionsTranscriptomics can detect TB exposure and, with further development, may be an approach of value for epidemiological research and targeting public health interventions.

Indexed as

AdultAgedBasic-Leucine Zipper Transcription FactorsCase-Control StudiesContact TracingFemaleHumansInterferon Type ILatent TuberculosisMaleMiddle AgedNeutrophilsProtein Interaction MapsRNAScavenger Receptors, Class FTumor Suppressor ProteinsBasic-Leucine Zipper Transcription FactorsBatf2 protein, humanInterferon Type IRNASCARF1 protein, humanScavenger Receptors, Class FTumor Suppressor ProteinsBiomarkersTB exposureTB infection; RNA sequencingTuberculosis; gene expressionWhole blood

Identifiers

PMID32517725
PMCPMC7282166
OpenAlexW3033366651

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.