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Circulation, Vol 87, 1974-1978, Copyright © 1993 by American Heart Association

ARTICLES

HLA antigens in Turkish race with rheumatic heart disease [see comment]

M Ozkan, M Carin, G Sonmez, M Senocak, M Ozdemir and C Yakut
Kosuyolu Heart and Research Institute, Department of Cardiology, Instanbul, Turkey.

BACKGROUND. Rheumatic valvular disease has been reported to be associated with HLA antigens. To determine whether genetic factors could be involved in the pathogenesis of rheumatic heart disease (RHD), we analyzed the distribution of HLA-A, HLA-B, and HLA-DR antigens in Turkish patients with chronic rheumatic heart disease. METHODS AND RESULTS. The association of class I and class II HLA antigens was examined in 107 ethnic Turkish patients with chronic RHD. The diagnosis was supported by echocardiography, cardiac catheterization, angioventriculography, and histological findings in patients who underwent valve replacement. Two hundred three control subjects, also of Turkish origin, were chosen. The phenotypes B16, DR3, and DR7 were encountered in a significantly higher frequency in patients with RHD compared with the control population (corrected p < 0.05, p < 0.00005, and p < 0.0005, respectively). There also was a decrease in the antigen frequency of DR5 in patients compared with controls (corrected p < 0.005). CONCLUSIONS. The results are consistent with the hypothesis that susceptibility to RHD is genetically linked, and this in turn may be associated mainly with HLA class II antigens and weakly with class I antigens, with DR3, DR7, and B16 influencing susceptibility and DR5 conferring protection.

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