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Nephron. 1999 Feb;81(2):165-71.

Association between HLA-DRB1*15 and Japanese patients with rheumatoid arthritis complicated by renal involvement.

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  • 1Kidney Center, Fukuoka University Hospital, Fukuoka, Japan.


We performed serological phenotyping of HLA antigens in 175 patients with rheumatoid arthritis (RA) with (n = 41) and without (n = 134) renal involvement (RI), and DNA typing of HLA class II alleles in 75 patients. Among the patients with RA, the frequency of serologically determined HLA-DR4 was found to be significantly increased (odds ratio: 1.8, confidence interval: 1.3-2.5, p = 2.4x10(-4)). In the patients without RI, the frequency of serological DR4 significantly increased (odds ratio: 2.2, confidence interval: 1.6-3.3, p = 2. 6x10(-5)). On the other hand, among the patients with RI, a serological determinant, DR15, did significantly increase (odds ratio: 2.7, confidence interval: 0.9-8.4, p = 1.2x10(-3)) in comparison to the controls. At the DNA level, we found that the association of Japanese RA patients with serological HLA-DR4 was based on that with a genotype of HLA-DRB1*0405 (odds ratio: 2.4, confidence interval: 1.5-4.0, p = 4.4x10(-4)) and also found an association of HLA-DRB1*1501 (odds ratio: 2.8, confidence interval: 1.2-6.6, p = 0.017) with RA patients having RI. Our results confirmed the association of HLA-DRB1*04 with RA over the ethnic barrier at the DNA level. Our results also suggested a distinct genetic effect of HLA-DRB1*1501 in the aspect of the susceptibility of RI in RA.

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