title: Genetic linkage and HLA association in congenital adrenal hyperplasia due to 21-hydroxylase deficiency.
abstract: Twenty-eight families of patients with congenital adrenal hyperplasia due to 21-hydroxylase (21-OH) deficiency were studied to evaluate the specific HLA linkage relationship and HLA antigen association to the 21-OH deficiency gene. Genotype assignment, based on hormonal studies (ACTH stimulation) and HLA genotyping, correlated very well (p less than 0.01) in 23 unaffected sibs of children with 21-OH deficiency further supporting the genetic linkage of the 21-OH deficiency gene to the HLA complex. One family was informative for the placement of the 21-OH deficiency gene outside the HLA complex on the HLA-DR locus side. In this family HLA-A, B, C, DR, MT, MB, and glyoxylase typing and mixed lymphocyte culture was performed. An association of 21-OH deficiency and the HLA-A3 antigen was noted in the 28 families. This association is not secondary to the association of the 21-OH deficiency gene with HLA-BW47.
mesh_terms: D000312:Adrenal Hyperplasia, Congenital / Q000201:enzymology / Q000235:genetics* / Q000276:immunology; D005260:Female; D008040:Genetic Linkage; D006680:HLA Antigens / Q000032:analysis* / Q000235:genetics; D006801:Humans; D008297:Male
chemical_list: D006680:HLA Antigens