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HLA-DRB1 Genotypes and the Risk of Developing Anti Citrullinated Protein Antibody (ACPA) Positive Rheumatoid Arthritis

Author

Listed:
  • Nathalie Balandraud
  • Christophe Picard
  • Denis Reviron
  • Cyril Landais
  • Eric Toussirot
  • Nathalie Lambert
  • Emmanuel Telle
  • Caroline Charpin
  • Daniel Wendling
  • Etienne Pardoux
  • Isabelle Auger
  • Jean Roudier

Abstract

Objective: To provide a table indicating the risk for developing anti citrullinated protein antibody (ACPA) positive rheumatoid arthritis (RA) according to one’s HLA-DRB1 genotype. Methods: We HLA-DRB1 genotyped 857 patients with ACPA positive RA and 2178 controls from South Eastern and Eastern France and calculated Odds Ratios (OR) for developing RA for 106 of 132 possible genotypes accounting for 97% of subjects. Results: HLA-DRB1 genotypic ORs for developing ACPA positive RA range from 28 to 0.19. HLA-DRB1 genotypes with HLA-DRB1*04SE (HLA-DRB1*0404, HLA-DRB1*0405, HLA-DRB1*0408), HLA-DRB1*04∶01, HLA-DRB1*01 are usually associated with high risk for developing RA. The second HLA-DRB1 allele in genotype somewhat modulates shared epitope associated risk. We did not identify any absolutely protective allele. Neither the Reviron, nor the du Montcel models accurately explains our data which are compatible with the shared epitope hypothesis and suggest a dosage effect among shared epitope positive HLA-DRB1 alleles, double dose genotypes carrying higher ORs than single dose genotypes. Conclusion: HLA-DRB1 genotypic risk for developing ACPA positive RA is influenced by both HLA-DRB1 alleles in genotype. We provide an HLA-DRB1 genotypic risk table for ACPA positive RA.

Suggested Citation

  • Nathalie Balandraud & Christophe Picard & Denis Reviron & Cyril Landais & Eric Toussirot & Nathalie Lambert & Emmanuel Telle & Caroline Charpin & Daniel Wendling & Etienne Pardoux & Isabelle Auger & J, 2013. "HLA-DRB1 Genotypes and the Risk of Developing Anti Citrullinated Protein Antibody (ACPA) Positive Rheumatoid Arthritis," PLOS ONE, Public Library of Science, vol. 8(5), pages 1-7, May.
    • Handle: RePEc:plo:pone00:0064108
    DOI: 10.1371/journal.pone.0064108
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