NRAS and atrial fibrillation: The KRAS G12/G13 mutations with AF‰ ≥ 1 were associated with AF levels in the same range of KRAS Q61 (RR2 = 1.490), NRAS Q61 (RR2 = 1.600), and NRAS G12/13 (RR2 = 2.000) mutations mainly when AF ≠ 0 (Figure 1b).