[The effect of genetically determined factors on the development and course of sarcoidosis].

Intricate aspects of sarcoidosis course are studied. Examination included 75 Russian patients with sarcoidosis of the respiratory organs: 44 of them had newly diagnosed process and its spontaneous regression and in 31 the disease took a recurrent course. In all patients the HLA system of classes I and II were detected by means of a standard microlymphocytotoxic test; electrophoresis in polyacrylamide and starch gels was used to determine the genotypes of erythrocyte enzymes and/the groups of specific proteins. In sarcoidosis patients the rate of occurrence of antigens B7 and B8 was characteristically increased (22.7 and 27.3%) as compared to the group of healthy subjects (21.5 and 15.1%) and there was a rise of total homozygosity and heterozygosity reduction for the ESD, ACP, PGM-1 loci, which obviously may affect the disease course. Investigations are in progress.