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Association of a complement receptor 1 gene variant with baseline erythrocyte sedimentation rate levels in patients starting anti-TNF therapy in a UK rheumatoid arthritis cohort: results from the Biologics in Rheumatoid Arthritis Genetics and Genomics Study Syndicate cohort

Lookup NU author(s): Professor John IsaacsORCiD, Emerita Professor Helen Foster



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Eligibility for anti-tumour necrosis factor (TNF) therapy in most European countries is restricted to severe, active rheumatoid arthritis (RA). The DAS28 score is a marker of disease severity and incorporates one of two inflammatory markers, erythrocyte sedimentation rate (ESR) or C-reactive protein. We aimed to determine the relation between genetic variants known to affect ESR and levels of ESR in patients with active RA. DNA samples were genotyped for four single-nucleotide polymorphisms (SNPs) rs7527798 (CR1L), rs6691117 (CR1), rs10903129 (TMEM57) and rs1043879 (C1orf63). The association between SNPs and baseline ESR, baseline DAS28-ESR, and change in DAS28-ESR was evaluated. Baseline ESR was significantly associated with CR1 rs6691117 genotype (P=0.01). No correlation was identified between baseline DAS28-ESR or change in DAS28-ESR. In conclusion, genetic variation in the gene encoding CR1 may alter ESR levels but not DAS28-ESR, indicating no adjustment for CR1 genotype is required in the assessment of patients with severe active RA.

Publication metadata

Author(s): Bluett J, Ibrahim I, Plant D, Hyrich KL, Morgan AW, Wilson AG, Isaacs JD, Barton A, BRAGGSS

Publication type: Article

Publication status: Published

Journal: Pharmacogenomics Journal

Year: 2014

Volume: 14

Issue: 2

Pages: 171-175

Print publication date: 16/07/2013

Acceptance date: 29/05/2013

Date deposited: 03/07/2014

ISSN (print): 1470-269X

ISSN (electronic): 1473-1150

Publisher: Nature Publishing Group


DOI: 10.1038/tpj.2013.26


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Funder referenceFunder name
National Institute for Health Research Biomedical Research Unit Funding Scheme
17552Arthritis Research UK