Then, we identified a nominal association (P < 0.01) of MetS with 16 SNPs, including ARNTL rs10832020, GSK3B rs2199503, PER3 (rs10746473, rs2797685, rs1689904, rs1773138), RORA (rs17237367, rs58469372, rs12591650, rs12594188, rs17270446, rs11630062, rs8029848, rs8034880, rs72752802), and RORB rs972902 (Table 2). This evidence concerns the gene PER3 and metabolic syndrome.