[Relationship between HLA D region gene and primary Sjögren's syndrome].
1991
: Primary Sjogren's syndrome is characterized by lymphocytic infiltration of the salivary and lacrimal glands and by autoantibody production. In order to identify the genetic factors that play a role in the pathogenesis and to predict the progress of the disease we used the restriction fragment length polymorphism and polymerase chain reaction method to detect the polymorphism of HLA-DRB1, DRB3, DQA and DQB genes among 75 Caucasoid primary SS patients, and compared the results with normal controls living in the same area. We found (1) significant increased frequency of HLA-DR3 (54%) and DRw8 (13%) (P less than 0.001); (2) increased frequency of the HLA-DRB3 allele DRw52a and of the HLA-DQA allele DQA 4 (P less than 005); (3) increased frequency of heterozygosity for DQA 1/DQA 4 (P less than 005); (4) autoantibody SSA and SSB associated with DR3 (P less than 002 and P less than 0001 respectively).
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