CONTEXT: Graves' disease (GD) is caused by an interplay of genetic factors and environmental triggers. Recently, a susceptibility locus for GD was mapped to chromosome 20q11 (GD-2). Furthermore, a novel single nucleotide polymorphism (SNP) in the CD40 gene, which is located in 20q11, was found to be associated and linked with GD in Caucasians and in Koreans. OBJECTIVES: To examine a C/T SNP in the 5' untranslated region of the CD40 gene (CD40-E1SNP) for association with autoimmune thyroid diseases (AITDs) in a Japanese dataset. DESIGN, SETTING, AND PATIENTS: Case-control association studies were performed using the CD40-E1SNP. We studied 485 Japanese patients with AITD (301 with GD, 184 with Hashimoto's thyroiditis [HT]) and 177 matched Japanese control subjects in association studies. MAIN OUTCOME: Frequencies of genotypes and alleles of the CD40- E1SNP. RESULTS: The distribution of genotype frequencies differed significantly between patients with GD and controls in a dominant manner (p = 0.039). The CC+CT genotypes of the CD40-E1SNP were associated with the increased risk for GD (p = 0.015, odds ratio [OR] = 1.9). In contrast, no differences in genotype frequencies were observed between HT patients and controls for the CD40-E1SNP. CONCLUSION: These results suggested that the CD40 gene is involved in susceptibility for GD in the Japanese.
CONTEXT: Graves' disease (GD) is caused by an interplay of genetic factors and environmental triggers. Recently, a susceptibility locus for GD was mapped to chromosome 20q11 (GD-2). Furthermore, a novel single nucleotide polymorphism (SNP) in the CD40 gene, which is located in 20q11, was found to be associated and linked with GD in Caucasians and in Koreans. OBJECTIVES: To examine a C/T SNP in the 5' untranslated region of the CD40 gene (CD40-E1SNP) for association with autoimmune thyroid diseases (AITDs) in a Japanese dataset. DESIGN, SETTING, AND PATIENTS: Case-control association studies were performed using the CD40-E1SNP. We studied 485 Japanese patients with AITD (301 with GD, 184 with Hashimoto's thyroiditis [HT]) and 177 matched Japanese control subjects in association studies. MAIN OUTCOME: Frequencies of genotypes and alleles of the CD40- E1SNP. RESULTS: The distribution of genotype frequencies differed significantly between patients with GD and controls in a dominant manner (p = 0.039). The CC+CT genotypes of the CD40-E1SNP were associated with the increased risk for GD (p = 0.015, odds ratio [OR] = 1.9). In contrast, no differences in genotype frequencies were observed between HTpatients and controls for the CD40-E1SNP. CONCLUSION: These results suggested that the CD40 gene is involved in susceptibility for GD in the Japanese.
Authors: Fiona Blanco-Kelly; Fuencisla Matesanz; Antonio Alcina; María Teruel; Lina M Díaz-Gallo; María Gómez-García; Miguel A López-Nevot; Luis Rodrigo; Antonio Nieto; Carlos Cardeña; Guillermo Alcain; Manuel Díaz-Rubio; Emilio G de la Concha; Oscar Fernandez; Rafael Arroyo; Javier Martín; Elena Urcelay Journal: PLoS One Date: 2010-07-12 Impact factor: 3.240