Rozenn et al. (Lemaitre et al., 2009) studies have shown that that variation in TBXAS1 and PTGIS may influence Myocardial Infarction (MI) risk and carriers of rs20417 C allele might derive greater benefits from aspirin use in primary prevention in comparison with non‐carriers. The gene discussed is TBXAS1; the disease is myocardial infarction.