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Genetic susceptibility to type I diabetes is partly determined by genes located in the human leukocyte antigen (HLA) region on chromosome 6. It has been claimed that the transmission of HLA-encoded susceptibility is influenced by parental sex. Fathers are reported to transmit HLA-DR4 haplotypes more frequently to their diabetic offspring than mothers. More recently, it has been suggested that the presence of HLA-DR4 in a mother may influence susceptibility in her offspring, even when it is not inherited. We have analyzed 172 multiplex diabetic pedigrees from the U.K. and find no evidence to support an important effect of parental sex on the inheritance of HLA-encoded susceptibility. Examination of a further 110 pedigrees from the U.S. supports this finding. These results have important implications for strategies involving genetic screening for type I diabetes.

Original publication

DOI

10.2337/diab.43.12.1462

Type

Journal article

Journal

Diabetes

Publication Date

12/1994

Volume

43

Pages

1462 - 1468

Keywords

Adolescent, Child, Chromosomes, Human, Pair 6, Diabetes Mellitus, Type 1, Fathers, Female, HLA-DR Antigens, HLA-DR3 Antigen, HLA-DR4 Antigen, Haplotypes, Humans, Male, Mothers, Pedigree