HLA-DRB3*0101 is associated with Graves' disease in Jamaicans.
OBJECTIVES: Graves' disease is associated with different human leucocyte antigen (HLA) genes in different populations. This studywasdesigned to examinethe HLA class II associations with Graves' disease in Jamaicans. PATIENTS: One hundred and six Jamaicans with Graves' disease and 104 controls. DESIGN: Oligotyping for HLA-DRB1, DRB3, DQA1 and DQB1 alleles was performed using the polymerase chain reaction sequence specific oligonucleotide probe (PCR-SSOP) technique. RESULTS The frequency of HLA-DRB3 *0101 was increased significantly in the patients compared to controls (38.7% vs. 19.2%; RR = 2.72; Pc < 0.015). The protective alleles for Graves' disease were DRB1 *0901 (0.9% vs. 20.2%; RR = 0.04; Pc < 0.001), DRB1*1001 (0.0% vs. 11%; RR = 0.0%; Pc < 0.01) and DRB4 *0101 (0.0% vs. 12.5%; RR = 0.0; Pc < 0.05). A high female to male ratio of Graves' disease, 25 :1, was observed. Other associated autoimmune diseases were rare and no significant HLA class II associations were found with clinical markers of disease. CONCLUSIONS: Jamaican patients with Graves' disease share the DRB3 *0101 susceptible allele and the DRB4 *01 protective allele but not the susceptible haplotype DRB1 *0301, DRB3*0101, DQA1*0501 with Caucasians.[1]References
- HLA-DRB3*0101 is associated with Graves' disease in Jamaicans. Smikie, M.F., Pascoe, R.W., Barton, E., Morgan, O., Christian, N., Dowe, G., Roye-Green, K., Bailey, V., James, O. Clin. Endocrinol. (Oxf) (2001) [Pubmed]
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