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Genome-wide association study of response to methotrexate in early rheumatoid arthritis patients

  • on behalf of the MATURA
  • , and PAMERA
  • , Consortia
  • University of Leeds
  • Vanderbilt University
  • Arthritis Research UK Centre for Genetics and Genomics
  • University of Manchester
  • NIHR Manchester BRC
  • Manchester University NHS Foundation Trust
  • Queen Mary University of London
  • University of Edinburgh
  • Pharmatics Limited
  • Research Institute for Primary Care and Health Sciences
  • Keele University
  • Department of Medical and Molecular Genetics
  • King's College London
  • Roche Products Limited UK
  • Wellcome Trust Sanger Institute
  • University of Glasgow
  • Newcastle University
  • Musculoskeletal Research Group
  • Newcastle University and NIHR Newcastle Biomedical Research Centre in Ageing and Long Term Conditions
  • University of Kentucky
  • Utrecht University
  • Academic Medical Centre
  • University of Amsterdam
  • GlaxoSmithKline
  • University of Cambridge
  • Ghent University
  • University of Alabama at Birmingham
  • Atherosclerosis Research Unit
  • Karolinska Institutet
  • RIKEN
  • Mayo Clinic Rochester, MN

Research output: Contribution to journal › Review article › peer-review

Abstract

Methotrexate (MTX) monotherapy is a common first treatment for rheumatoid arthritis (RA), but many patients do not respond adequately. In order to identify genetic predictors of response, we have combined data from two consortia to carry out a genome-wide study of response to MTX in 1424 early RA patients of European ancestry. Clinical endpoints were change from baseline to 6 months after starting treatment in swollen 28-joint count, tender 28-joint count, C-reactive protein and the overall 3-component disease activity score (DAS28). No single nucleotide polymorphism (SNP) reached genome-wide statistical significance for any outcome measure. The strongest evidence for association was with rs168201 in NRG3 (p = 10−7 for change in DAS28). Some support was also seen for association with ZMIZ1, previously highlighted in a study of response to MTX in juvenile idiopathic arthritis. Follow-up in two smaller cohorts of 429 and 177 RA patients did not support these findings, although these cohorts were more heterogeneous.

Original languageEnglish
Pages (from-to)528-538
Number of pages11
JournalPharmacogenomics Journal
Volume18
Issue number4
DOIs
Publication statusPublished - 1 Jul 2018
Externally publishedYes

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