Matsuyama M, Hashimoto K, Yamasaki Y, Shirakura R, Higuchi R, Miyajima T, Amemiya H
Tissue Antigens. 1981 Feb;17(2):238-9. doi: 10.1111/j.1399-0039.1981.tb00689.x.
The frequency of HLA-DR4 was significantly increased at P less than 0.02 in 37 unrelated pemphigus patients (62.2%), when compared with unrelated 73 healthy controls (30.1%). This antigen was more frequently found in pemphigus foliaceus (70.6%) than pemphigus vulgaris (55.8%).