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The histocompatibility antigen, HL-A8, was found to be elevated in patients with Sjogren's syndrome. Among 24 patients, the frequency of HL-A8 was 58% compared to 21% among controls (P less than 0.001 after correction). With the addition of this disorder to the list of other autoimmune diseases associated with HL-A8, it now seems possible to postulate a single basis autoimmune defect gene in high linkage disequilibrium with HL-A8.
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Gershwin et al. (1975) studied this question.
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