APOE and coronary artery disorder: First, we assessed the association of APOE polymorphism among 666 subjects with percentage of CAD stenosis by evaluating the pattern of distribution of E2 (2/2 and 2/3), E4 (3/4 and 4/4), and E3 (3/3) genotype groups among three stenosis categories (<30%, 30–69%, and ≥70%) (Table 3).