CCAR1 and dermatomyositis: Within the Johns Hopkins cohort, there was an association between anti-CCAR1 positivity and younger age of DM-symptom onset (median 44.0 vs. 46.5, rank-sum P = 0.026), as well as a higher anti-CCAR1 prevalence in White patients (35% Whites positive for anti-CCAR1 vs. 7% non-White, Fischer’s exact P = 0.037).