Investigation of the mode of inheritance of insulin-dependent diabetes mellitus in Japanese subjects.
Previous studies have shown that insulin-dependent diabetes mellitus is positively associated with HLA-DR4 and HLA-DR9 in Japanese populations. It was proposed that susceptibility to the disease is determined by a single HLA allele associated with both DR4 and DR9. DR genotypes in a Japanese population with insulin-dependent diabetes mellitus were determined by DRB/DQB RFLP analysis. A single disease-susceptibility-allele model was tested by the antigen-genotype-frequency-among-patients method. Recessive and additive inheritance of a single susceptibility allele were rejected. The DR9-associated disease-susceptibility allele in Japanese subjects is distinct from both the DR3- and DR4-associated susceptibility alleles in white Caucasians. The data suggest further complexity in the inheritance of HLA-associated susceptibility to insulin-dependent diabetes mellitus.
Department of Medicine, University of Birmingham, England, United Kingdom.
D
D
Jenkins
M A
MA
Penny
Y
Y
Uchigata
K H
KH
Jacobs
C H
CH
Mijovic
Y
Y
Hirata
T
T
Otani
J
J
Fletcher
A R
AR
Bradwell
A H
AH
Barnett
D000328:Adult; D000483:Alleles; D044466:Asian People / Q000235:genetics; D003922:Diabetes Mellitus, Type 1 / Q000235:genetics*; D004198:Disease Susceptibility; D005260:Female; D005787:Gene Frequency; D006683:HLA-DQ Antigens / Q000235:genetics; D006684:HLA-DR Antigens / Q000235:genetics*; D059810:HLA-DR Serological Subtypes; D015804:HLA-DR4 Antigen / Q000235:genetics*; D006801:Humans; D012150:Polymorphism, Restriction Fragment Length
D006683:HLA-DQ Antigens; D006684:HLA-DR Antigens; D059810:HLA-DR Serological Subtypes; D015804:HLA-DR4 Antigen; C038988:HLA-DR9 antigen