Gene polymorphism in AT1R with transversion of an adenine (A) to cytosine (C) at 1166 [23]–[24] is associated with cardiovascular diseases such as, coronary artery disease [42], myocardial infarction [43] and essential hypertension [24], [26]–[31]. The gene discussed is AGTR1; the disease is myocardial infarction.