title: Selective IgA deficiency and the HLA-B8 antigen. Report of two cases with familial data.
abstract: Two patients had IgA deficiency, giardiasis, and the HLA-B8 antigen. The family of patient 1 included members with juvenile-onset diabetes mellitus, adrenal insufficiency, pernicious anemia, and hypothyroidism, a combination of unusual diseases that has been reported previously to occur as a syndrome with IgA deficiency and the HLA-B8 antigen. This coincidence makes it likely that these two patients and the one family previously described have a common pathogenic base, the inheritance of an abnormal immune-response gene that is acquired with the HLA-B8 antigen as a result of genetic dysequilibrium.
mesh_terms: D000328:Adult; D002648:Child; D004406:Dysgammaglobulinemia / Q000150:complications / Q000235:genetics* / Q000276:immunology; D005873:Giardiasis / Q000150:complications; D006680:HLA Antigens / Q000235:genetics*; D006801:Humans; D017098:IgA Deficiency; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008297:Male
chemical_list: D006680:HLA Antigens; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M