TG showed the strongest association with MetS among the biochemical indices studied (adjusted OR: 4.93, 95% CI: 3.79–6.52), followed by insulin (adjusted OR: 2.19, 95% CI: 1.54–3.28) and HbA1c (adjusted OR: 2.09, 95% CI: 1.77–2.48). The gene discussed is INS; the disease is metabolic syndrome.