While we used the gene expression of HF as 1, the expression levels of BCL2, VEGFA, CYP19A1, BAX, and CASPASE3 in AF were 0.22 ± 0.14, 0.53 ± 0.19, 0.53 ± 0.20, 2.26 ± 0.59, and 3.05 ± 1.76, respectively. This evidence concerns the gene CYP19A1 and atrial fibrillation.