For example, a literature review evaluated and summarized the effect of 53 SNPs on sudden cardiac death (SCD) and found that rs6684209, rs3814843, and rs35594137 in CASQ2, CALM1, and GJA5, respectively, had the most significant association with SCD (Tamariz et al., 2019). This evidence concerns the gene GJA5 and Schnyder corneal dystrophy.