title: HLA-DRW4 antigen linkage in patients with hypertrophic obstructive cardiomyopathy.
abstract: To determine the association of histocompatibility (HLA) genes in patients with hypertrophic cardiomyopathy, we determined HLA-A, HLA-B, HLA-C, and HLA-DR specificities in 33 Japanese patients (15 with the obstructive type off hypertrophic cardiomyopathy, and 18 with the nonobstructive type). HLA-DRW4 was found in 73% of patients with hypertrophic obstructive cardiomyopathy, as compared to 33% of 144 normal controls (p < 0.005). HLA-DRW4 occurred in 33% of those with hypertrophic nonobstructive cardiomyopathy, and there was no significant difference as compared with controls. Thus, hypertrophic obstructive cardiomyopathy is associated with genes in the HLA-DR region and immunogenetic factors linked to HLA appear to play a role in the pathogenesis. This work is the first attempt at demonstration of HLA-DR antigen in hypertrophic cardiomyopathy.
mesh_terms: D000328:Adult; D000368:Aged; D002312:Cardiomyopathy, Hypertrophic / Q000235:genetics* / Q000276:immunology; D000939:Epitopes; D005260:Female; D008040:Genetic Linkage; D006680:HLA Antigens / Q000235:genetics* / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000939:Epitopes; D006680:HLA Antigens