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Table 1 Characteristics of patients and controls tested for IgG, IgM, and IgA isotypes of antibodies against UH-RA.1 and UH-RA.21

From: The isotype repertoire of antibodies against novel UH-RA peptides in rheumatoid arthritis

Diagnosis Number of subjects Age, years Female sex Disease duration, years RF-positive ACPA-positive RF/ACPA-positive
RA 285 60.1 ± 12.1 68 % 8.4 ± 7.8 56 % 48 % 63 %
RC 88 49.5 ± 11.6 42 % 10.2 ± 7.9a NA NA NA
HC 90 38.7 ± 15.1 63 % NA NA NA NA
  1. Abbreviations: ACPA anticitrullinated protein antibodies, HC healthy control subjects, NA not applicable or not available, RA patients with rheumatoid arthritis, RC rheumatic control subjects, RF rheumatoid factor
  2. Data are mean ± SD unless otherwise indicated
  3. a Unknown for 17 RC