In phase II of the study, serum cardiac troponin I concentrations (cTnI) were correlated with CAPS (Rs = 0.618, P = .032), but not M‐CAI (Rs = 0.138, P = .668), or APPLEfull (Rs = 0.333, P = .290). The gene discussed is CA1; the disease is cryopyrin-associated periodic syndrome.