title: Family studies of B lymphocyte alloantigens in systemic lupus erythematosus.
abstract: In Caucasians with systemic lupus erythematosus (SLE), we have identified 3 risk markers in the HLA-D region -- HLA-DR2, HLA-DR3, and la-715 -- and have used these markers to probe 7 families in which more than 1 case of lupus had occurred. In 6 of the 7 families studied, persons with SLE were either homozygous for HLA-DR2, had 2 haplotypes carrying reactivity with la-715, or had at least 2 of the 3 risk markers HLA-DR2, HLA-DR3, and la-715. Several normal individuals in these kindreds also had these multiple risk markers but had no signs or symptoms of lupus. This limited study of lupus families suggests a role for coinheritance of HLA-D region genes as a factor in the development of SLE.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001402:B-Lymphocytes / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D003165:Complement System Proteins / Q000032:analysis; D005260:Female; D006680:HLA Antigens / Q000276:immunology; D006801:Humans; D007519:Isoantigens / Q000032:analysis*; D008180:Lupus Erythematosus, Systemic / Q000235:genetics / Q000276:immunology*; D008297:Male; D010375:Pedigree
chemical_list: D006680:HLA Antigens; D007519:Isoantigens; D003165:Complement System Proteins