ADIPOQ and metabolic syndrome: In view of the involvement of ADIPOQ in the molecular mechanism of MetS and the lack of studies focusing on the association between ADIPOQ variants and MetS in the Chinese Han population, we performed an association study to investigate whether the four ADIPOQ SNPs (rs182052, rs3774261, rs6773957 and rs17366568) are associated with MetS in the elderly Chinese Han population.