Evidence map›Paper›PMID 19797128›Full record

ArticleThe European respiratory journal2010

Association between Gc genotype and susceptibility to TB is dependent on vitamin D status.

A R Martineau, A C C S Leandro, S T Anderson, S M Newton, K A Wilkinson, M P Nicol, S M Pienaar, K H Skolimowska, M A Rocha, V C Rolla and 7 more

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in The European respiratory journal, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
7.1field-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

43 citing papers in PubMed, 2 syntheses or guidelines pooled it, 123 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Efficacy of vitamin DTrials · 2017
    Trial
  4. Trial
  5. Vitamin D accelerates resolution of inflammatory responses during tuberculosis treatment.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Trial
  6. Article
  7. Observational
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
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  14. Review
  15. Article
  16. Review
  17. Review
  18. Human Immunology of Tuberculosis.Microbiology spectrum · 2017
    Review
  19. Article
  20. 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

17 authors at 2 institutions in 1 country.

A R MartineauWellcome Trust Centre for Research in Clinical Tropical Medicine, Division of Medicine, Imperial College London, London, UK. a.martineau@qmul.ac.uk
A C C S Leandro
S T Anderson
S M Newton
K A Wilkinson
M P Nicol
S M Pienaar
K H Skolimowska
M A Rocha
V C Rolla
M Levin
R N Davidson
S A Bremner
C J Griffiths
B S Eley
M G Bonecini-Almeida
R J Wilkinson
Queen Mary University of London · GBImperial College London · GB

Funding

Medical Research Council MC_U117588499Medical Research Council U117588499(88499)Wellcome Trust 066321Wellcome Trust 072070Wellcome Trust 084323Wellcome Trust 088316
6 · The paper itself

Abstract

Group-specific component (Gc) variants of vitamin D binding protein differ in their affinity for vitamin D metabolites that modulate antimycobacterial immunity. We conducted studies to determine whether Gc genotype associates with susceptibility to tuberculosis (TB). The following subjects were recruited into case-control studies: in the UK, 123 adult TB patients and 140 controls, all of Gujarati Asian ethnic origin; in Brazil, 130 adult TB patients and 78 controls; and in South Africa, 281 children with TB and 182 controls. Gc genotypes were determined and their frequency was compared between cases versus controls. Serum 25-hydroxyvitamin D (25(OH)D) concentrations were obtained retrospectively for 139 Gujarati Asians, and case-control analysis was stratified by vitamin D status. Interferon (IFN)-gamma release assays were also performed on 36 Gujarati Asian TB contacts. The Gc2/2 genotype was strongly associated with susceptibility to active TB in Gujarati Asians, compared with Gc1/1 genotype (OR 2.81, 95% CI 1.19-6.66; p = 0.009). This association was preserved if serum 25(OH)D was <20 nmol.L(-1) (p = 0.01) but not if serum 25(OH)D was > or =20 nmol.L(-1) (p = 0.36). Carriage of the Gc2 allele was associated with increased PPD of tuberculin-stimulated IFN-gamma release in Gujarati Asian TB contacts (p = 0.02). No association between Gc genotype and susceptibility to TB was observed in other ethnic groups studied.

Indexed as

AdultAllelesAsiaBrazilCase-Control StudiesChild, PreschoolChi-Square DistributionFemaleGene FrequencyGenetic Predisposition to DiseaseGenotypeHaplotypesHumansInterferon-gammaLogistic ModelsMaleInterferon-gammaVitamin DVitamin D-Binding Protein

Identifiers

PMID19797128
PMCPMC2864196
OpenAlexW2102405170

What OpenQuestion holds

Textmetadata
LicenceTDM
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.