The event-free survival using the combined endpoint of MCS, HTx, or death was significantly lower in MYC patients with anti-β-AR Ab levels below the median as compared to myocarditis patients with anti-β-AR Ab levels ≥ median (anti-β1/2/3-AR Ab: p = 0.049; Figure 4). This evidence concerns the gene ADRB2 and myocarditis.