Evidence map›Paper›PMID 20824136›Full record

ArticlePloS one2010

Decay kinetics of an interferon gamma release assay with anti-tuberculosis therapy in newly diagnosed tuberculosis cases.

Ifedayo M O Adetifa, Martin O C Ota, Brigitte Walther, Abdulrahman S Hammond, Moses D Lugos, David J Jeffries, Simon A Donkor, Richard A Adegbola, Philip C Hill

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 35 citations in OpenAlex.

  1. Trial
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  8. Interferon-gamma response to the treatment of active pulmonary and extra-pulmonary tuberculosis.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2017
    Observational
  9. Decreased expression of perforin in CD8Journal of thoracic disease · 2017
    Article
  10. Article
  11. Article
  12. Article
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  16. Human lung immunity against Mycobacterium tuberculosis: insights into pathogenesis and protection.American journal of respiratory and critical care medicine · 2011
    Article
  17. 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 2 institutions in 2 countries.

Ifedayo M O AdetifaBacterial Diseases Programme, Medical Research Council (United Kingdom) Laboratories, Fajara, The Gambia. iadetifa@mrc.gm
Martin O C Ota
Brigitte Walther
Abdulrahman S Hammond
Moses D Lugos
David J Jeffries
Simon A Donkor
Richard A Adegbola
Philip C Hill
Medical Research Council · GBMRC Unit the Gambia · GM

Funding

Medical Research Council MC_U190071468Medical Research Council MC_U190081968
6 · The paper itself

Abstract

backgroundQualitative and quantitative changes in IGRA response offer promise as biomarkers to monitor Tuberculosis (TB) drug therapy, and for the comparison of new interventions. We studied the decay kinetics of TB-specific antigen T-cell responses measured with an in-house ELISPOT assay during the course of therapy.

methodsNewly diagnosed sputum smear positive TB cases with typical TB chest radiographs were recruited. All patients were given standard anti-TB treatment. Each subject was followed up for 6 months and treatment outcomes were documented. Blood samples were obtained for the ESAT-6 and CFP-10 (EC) ELISPOT at diagnosis, 1-, 2-, 4- and 6-months. Qualitative and quantitative reversion of the ELISPOT results were assessed with McNemar test, conditional logistic regression and mixed-effects hierarchical Poisson models.

resultsA total of 116 cases were recruited and EC ELISPOT was positive for 87% (95 of 109) at recruitment. There was a significant decrease in the proportion of EC ELISPOT positive cases over the treatment period (p<0.001). Most of the reversion occurred between the start and first month of treatment and at completion at 6 months. ESAT-6 had higher median counts compared to CFP-10 at all time points. Counts for each antigen declined significantly with therapy (p<0.001). Reverters had lower median SFUs at the start of treatment compared to non-Reverters for both antigens. Apart from the higher median counts for non-Reverters, no other risk factors for non-reversion were found.

conclusionsTB treatment induces qualitative and quantitative reversion of a positive in-house IGRA in newly diagnosed cases of active TB disease. As this does not occur reliably in the majority of cured individuals, qualitative and quantitative reversion of an IGRA ELISPOT has limited clinical utility as a surrogate marker of treatment efficacy.

Indexed as

AdolescentAdultAgedAntitubercular AgentsFemaleHumansInterferon-gammaMaleMiddle AgedTuberculosisYoung AdultAntitubercular AgentsInterferon-gamma

Identifiers

PMID20824136
PMCPMC2931700
OpenAlexW1972636773

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.