HLA haplotypes in children with adrenogenital syndrome and their parents.

HLA-A and B antigen typing was carried out by the standard NIH lymphocytotoxicity test in children with adrenogenital syndrome (AGS) from 11 families, further in 3 healthy siblings and 20 obligatory gene carrier parents. Of the children 7 had the salt-losing form. The AGS homozygote group was examined for the geno- and haplotypes of the HLA antigen and the heterozygote group for HLA antigen genotypes. Two AGS-affected children of the same family proved to be HLA-identical, while in other families the haplotypes of the healthy siblings were different from those of the affected children. As compared with the data of 222 healthy blood donors, the antigens of the HLA-A and B loci in the homo- and heterozygote groups showed no significant difference.