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Table 1 Clinical features of RA patients’ sera studied by immunoprecipitation

From: Characterization and use of the ECV304 autoantigenic citrullinome to understand anti-citrullinated protein/peptide autoantibodies in rheumatoid arthritis

  RA1 RA2 RA3
Age (years) / Sex 64 / F 67 / F                    50 / F                 
Disease duration (years) 13 16 29
Extra-articular manifestations Nodulesa, vasculitis ILDb Uveitis
RF (negative < 14 IU/mL) 349 1440  < 20
CCP (negative < 5 RU/mL)  > 200 176  > 200
ECV304 (negative < 0.044 delta OD) 0.547 0.294 0.065
  1. aSubcutaneous nodules
  2. b ILD Interstitial lung disease