ALDH2 and myocardial infarction: Previous studies done by Mizuno et al., Gu et al., and Jo et al. showed concordant results among Chinese, Korean and Japanese populations: ALDH2*2 alleles (ALDH2*1/*2 + ALDH2*2/*2) are more frequent in the MI patients compare to the controls and is increasing the risk of MI [15–17].