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  • Title: Association of HLA antigen and restriction fragment length polymorphism of T cell receptor beta-chain gene with Graves' disease and Hashimoto's thyroiditis.
    Author: Ito M, Tanimoto M, Kamura H, Yoneda M, Morishima Y, Yamauchi K, Itatsu T, Takatsuki K, Saito H.
    Journal: J Clin Endocrinol Metab; 1989 Jul; 69(1):100-4. PubMed ID: 2567295.
    Abstract:
    HLA antigen phenotypes and BglII restriction fragment length polymorphism of T cell receptor beta-chain (TCR beta) gene were analyzed in 61 patients with Graves' disease and 50 patients with Hashimoto's thyroiditis. The antigen frequency of HLA-Bw46 in both Graves' disease (23.0%) and Hashimoto's thyroiditis (24.0%) was significantly higher than that in normal population (8.0%), with relative risks (RR) of 3.45 [corrected P (Pc) less than 0.009] and 3.66 (Pc less than 0.02), respectively. Significantly increased frequency of HLA-B51 antigen was also found in Hashimoto's thyroiditis (40.0% vs. 16.3% in controls; RR, 3.42; Pc less than 0.002). Hybridization of BglII-digested DNA with TCR beta probe revealed two alleles of 9.3 and 8.6 kilobases. The allele frequency of 8.6 kilobases in Graves' disease (79%) and Hashimoto's thyroiditis (76%) was significantly higher (P less than 0.01 and P less than 0.05, respectively) than that in controls (64%). The frequency of homozygous state 8.6/8.6 was significantly increased in both Graves' disease (62%) and Hashimoto's thyroiditis (60%) over that in controls (39%); the RR of 8.6/8.6 in Graves' disease and Hashimoto's thyroiditis were 2.55 (P less than 0.01) and 2.31 (P less than 0.05), respectively. These results indicate that in Japanese subjects at least two loci are involved in the susceptibility to Graves' disease and Hashimoto's thyroiditis, one related to HLA and another to TCR beta.
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