CRP and TnI levels were higher in patients with myocarditis than in index patients (19 vs. 3 mg/L, P = 0.07 and 6,443 vs. 15 ng/L, P < 0.001, respectively) and family members with the DSP variant (19 vs. 3 mg/L, P < 0.001 and 6,443 vs. 3 ng/L, P < 0.001, respectively). The gene discussed is DSP; the disease is myocarditis.