ABCA1 and diabetes mellitus: For the ABCA1- R230C gene mutation (C → T), because of the study published by J.C. Lara-Riegos was lack of datas on the number of CC/CT/TT genotypes in the control group, therefore, the risk frequency of T or C allele was calculated to evaluate the relationship between the ABCA1 R230C gene mutation and the risk of DM.