Evidence map›Paper›PMID 19479873›Full record

ArticleArthritis and rheumatism2009

Gene-environment interaction between the DRB1 shared epitope and smoking in the risk of anti-citrullinated protein antibody-positive rheumatoid arthritis: all alleles are important.

Emeli Lundström, Henrik Källberg, Lars Alfredsson, Lars Klareskog, Leonid Padyukov

Abstract read
In one paragraph

Article in Arthritis and rheumatism, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

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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

71 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  16. Frontiers in immunology · 2021
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  20. Long-term exposure to a mixture of industrial SOEnvironmental health : a global access science source · 2020
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11 more citing papers are in PubMed but not listed here.

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.

Emeli LundströmKarolinska Institutet, Rheumatology Unit, Department of Medicine, Stockholm, Sweden. emeli.lundstrom@ki.se
Henrik Källberg
Lars Alfredsson
Lars Klareskog
Leonid Padyukov

Funding

Trial of risk mangement for prevention of accelerated atherosclerosis in SLEP60AR047782 · NIAMS · BRIGHAM AND WOMEN'S HOSPITAL · PI LOSINA, ELENA · 2001 to 2016
$18.8M
Systemic Lupus Erythematosus and Ulcerative Colitis StudyU19AI067152 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KLARESKOG, LARS · 2005 to 2009
$10.1M
NIAID NIH HHS U19 AI067152NIAID NIH HHS U19-AI-067152NIAMS NIH HHS P60-AR-47782
6 · The paper itself

Abstract

objectiveAn interaction effect for developing rheumatoid arthritis (RA) was previously observed between HLA-DRB1 shared epitope (SE) alleles and smoking. We aimed to further investigate this interaction between distinct SE alleles and smoking regarding the risk of developing RA with and without anti-citrullinated protein antibodies (ACPAs).

methodsWe used data regarding smoking habits and HLA-DRB1 genotypes from 1,319 patients and 943 controls from the Epidemiological Investigation of Rheumatoid Arthritis, in which 972 patients and 488 controls were SE positive. Subsequently, 759 patients and 328 controls were subtyped for specific alleles within the DRB1*04 group. Odds ratios with 95% confidence intervals (95% CIs) were calculated by means of logistic regression. Interaction was evaluated by calculating attributable proportion due to interaction, with 95% CIs.

resultsA strong interaction between smoking and SE alleles in the development of ACPA-positive RA was observed for all DRB1*04 SE alleles taken as a group (relative risk [RR] 8.7 [95% CI 5.7-13.1]) and for the *0401 and *0404 alleles (RR 8.9 [95% CI 5.8-13.5]) and the *01 and *10 alleles (RR 4.9 [95% CI 3.0-7.8]) as specific, separate groups, with similar strength of interaction for the different groups (attributable proportion due to interaction 0.4 [95% CI 0.2-0.6], 0.5 [95% CI 0.3-0.7], and 0.6 [95% CI 0.4-0.8], respectively).

conclusionThere is a statistically significant interaction between distinct DRB1 SE alleles and smoking in the development of ACPA-positive RA. Interaction occurs with the *04 group as well as the *01/*10 group, demonstrating that regardless of fine specificity, all SE alleles strongly interact with smoking in conferring an increased risk of ACPA-positive RA.

Indexed as

AdultAllelesAntibodies, Anti-IdiotypicArthritis, RheumatoidCase-Control StudiesEpitopesFemaleGenetic Predisposition to DiseaseGenotypeHLA-DR AntigensHLA-DRB1 ChainsHumansLogistic ModelsMaleMiddle AgedRisk FactorsAntibodies, Anti-IdiotypicEpitopesHLA-DR AntigensHLA-DRB1 Chains

Identifiers

PMID19479873
PMCPMC2732897

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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.