APOE and type 2 diabetes mellitus: There were no significant associations between other ApoE genotypes (ɛ2/ɛ2, ɛ2/ɛ3, ɛ2/ɛ4, ɛ3/ɛ3, and ɛ4/ɛ4) or alleles (ɛ2 and ɛ3) and T2DM risk (Table 2).