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  • Title: Vitamin D receptor polymorphism and susceptibility to type 1 diabetes in Chilean subjects: a case-parent study.
    Author: Angel B, Santos JL, Carrasco E, Albala C, Pérez-Bravo F.
    Journal: Eur J Epidemiol; 2004; 19(12):1085-7. PubMed ID: 15678787.
    Abstract:
    Several reports have found a relation between polymorphisms of the vitamin D receptor gene (VDR) and the development of type 1 diabetes. We have examined the association of three VDR polymorphism with type 1 diabetes in 59 Chilean case-parents trios. Genotyping for Bsm1, Apal and Taq1 polymorphism were performed. Transmission/ disequiibrium tests were used to assess gene-disease associations through the evaluation of allelic transmission to affected offspring. Non-significant increased transmissions of B allele (probability of transmission = 52.5%, p = 0.69), A allele (probability of transmission = 58.4%, p = 0.17) and T allele (probability of transmission = 52.0%, p = 0.77) were estimated in Bsml, Apal and Taql sites, respectively. Haplotype-based analyses showed non-significant preferential transmissions (global p = 0.52). The present study does not support the hypothesis of a significant contribution of VDR alleles in the etiology of type 1 diabetes of Chilean cases.
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