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Circulation, Vol 76, 259-261, Copyright © 1987 by American Heart Association

ARTICLES

HLA-A, B, DR, and DQ antigens in black patients with severe chronic rheumatic heart disease

B Maharaj, MG Hammond, B Appadoo, WP Leary and DJ Pudifin

To determine whether genetic factors could be involved in the pathogenesis of rheumatic heart disease, we performed HLA-A and HLA-B typing in 120 black patients with severe chronic rheumatic heart disease requiring cardiac surgery, and HLA-DR and HLA-DQ typing in 103 and 97 of these patients, respectively. The HLA typing was done by a standard microlymphocytotoxicity method. Patients were 12 to 60 years old (mean 27.6 +/- 14.5). No differences in HLA-A, HLA-B, and HLA-DQ frequencies between patients and controls were noted. HLA-DR 1 antigen was present in 12.6% of patients compared with 2.7% of normal control subjects (corrected p less than .045; relative risk = 5.2) and the HLA- DRw6 antigen was present in 31.1% of patients compared with 15% of control subjects (corrected p less than .045; relative risk = 2.6). These findings suggest that genetically determined immune-response factors may play a role in the pathogenesis of severe chronic rheumatic heart disease.

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