The pattern of association between VDR gene polymorphism genotypes and age-of-onset subgroups of Kuwaiti T1DM patients showed almost a similar pattern except for the BsmI polymorphism (Tables 3, 4, 5 and 6), mostly significant differences were detected between subgroups < 4y and > 6y and between 4-6y and > 6y subgroups. The gene discussed is VDR; the disease is type 1 diabetes mellitus.