Our replication study is the first study to date to examine whether the main effects of the APOA5, APOC1, BRAP, BUD13, CETP, LIPA, LPL, PLCG1, and ZPR1 genes are significantly associated with the risk of MetS and its individual components independently and/or through gene-gene interactions among Taiwanese individuals. Here, APOA5 is linked to metabolic syndrome.