The left ventricular dilation-free survival rate was different between patients with the RR, RX, and XX genotypes (p = 0.023) and lower in patients with the ACTN3 null genotype compared with the ACTN3 positive genotype (HR: 9.04, 95% CI = 1.77 to 46.20, p < 0.05). This evidence concerns the gene ACTN3 and Left ventricular dilatation.