TY - JOUR
T1 - Anti-CCP antibody and rheumatoid factor concentrations predict greater disease activity in men with rheumatoid arthritis
AU - Miriovsky, Benjamin J.
AU - Michaud, Kaleb
AU - Thiele, Geoffrey M.
AU - O'Dell, James R.
AU - Cannon, Grant W.
AU - Kerr, Gail
AU - Richards, J. Steuart
AU - Johnson, Dannette
AU - Caplan, Liron
AU - Reimold, Andreas
AU - Hooker, Roderick
AU - Mikuls, Ted R.
PY - 2010/7
Y1 - 2010/7
N2 - Objective: To examine associations of anti-cyclic citrullinated peptide (aCCP) antibody and rheumatoid factor (RF) concentrations with future disease activity in men with rheumatoid arthritis (RA). Methods: Outcome measures were examined in male US veterans with RA and included (1) proportion of observations in remission (disease activity score (DAS28) ≤2.6); (2) remission for ≥3 consecutive months; and (3) area under the curve (AUC) for DAS28. The associations of autoantibody concentration (per 100 unit increments) with outcomes were examined using multivariate regression. Results: 826 men with RA were included in the analysis; the mean (SD) age was 65 (10.5) years and follow-up was for 2.6 (1.3) years. Most were aCCP (75%) and RF (80%) positive. After multivariate adjustment, aCCP (OR 0.93; 95% CI 0.89 to 0.96) and RF concentrations (OR 0.92; 95% CI 0.90 to 0.94) were associated with a lower odds of remission, a lower proportion of observation in remission (p=0.017 and p=0.002, respectively) and greater AUC DAS28 (p=0.092 and p=0.007, respectively). Among patients with discordant autoantibody status, higher concentrations of both aCCP and RF trended towards an inverse association with remission (OR 0.93; 95% CI 0.83 to 1.05 and OR 0.80; 95% CI 0.59 to 1.10, respectively). Conclusions: Higher aCCP concentrations (particularly in RF-positive patients) are associated with increased disease activity in US veterans with RA, indicating that aCCP concentration is predictive of future disease outcomes in men.
AB - Objective: To examine associations of anti-cyclic citrullinated peptide (aCCP) antibody and rheumatoid factor (RF) concentrations with future disease activity in men with rheumatoid arthritis (RA). Methods: Outcome measures were examined in male US veterans with RA and included (1) proportion of observations in remission (disease activity score (DAS28) ≤2.6); (2) remission for ≥3 consecutive months; and (3) area under the curve (AUC) for DAS28. The associations of autoantibody concentration (per 100 unit increments) with outcomes were examined using multivariate regression. Results: 826 men with RA were included in the analysis; the mean (SD) age was 65 (10.5) years and follow-up was for 2.6 (1.3) years. Most were aCCP (75%) and RF (80%) positive. After multivariate adjustment, aCCP (OR 0.93; 95% CI 0.89 to 0.96) and RF concentrations (OR 0.92; 95% CI 0.90 to 0.94) were associated with a lower odds of remission, a lower proportion of observation in remission (p=0.017 and p=0.002, respectively) and greater AUC DAS28 (p=0.092 and p=0.007, respectively). Among patients with discordant autoantibody status, higher concentrations of both aCCP and RF trended towards an inverse association with remission (OR 0.93; 95% CI 0.83 to 1.05 and OR 0.80; 95% CI 0.59 to 1.10, respectively). Conclusions: Higher aCCP concentrations (particularly in RF-positive patients) are associated with increased disease activity in US veterans with RA, indicating that aCCP concentration is predictive of future disease outcomes in men.
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U2 - 10.1136/ard.2009.122739
DO - 10.1136/ard.2009.122739
M3 - Article
C2 - 20439294
AN - SCOPUS:77955000386
SN - 0003-4967
VL - 69
SP - 1292
EP - 1297
JO - Annals of the Rheumatic Diseases
JF - Annals of the Rheumatic Diseases
IS - 7
ER -