The detailed information of differentially expressed genes involved in NFAT pathway was shown in Table 6, implicating that the expression patterns of PPP3CB (Calcineurin A beta), PPP3R1 (Calcineurin B), PLCE1, MEF2C, and CAMK1 played a role in the activation of hypertrophy of atrial myocytes in MR patients compared to normal subjects. This evidence concerns the gene MEF2C and miotic rate.