Volume 6, Issue 1 pp. 149-154
Original Article
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HLA DQβ3.2 identifies subtypes of DR4 + haplotypes permissive for IDDM

David M. Robinson M.D.

Corresponding Author

David M. Robinson M.D.

Virginia Mason Research Center, University of Washington, School of Medicine, Seattle

Department of Medicine, University of Washington, School of Medicine, Seattle

Virginia Mason Research Center, 1000 Seneca Street, Seattle, WA 98101Search for more papers by this author
Susan Holbeck

Susan Holbeck

Virginia Mason Research Center, University of Washington, School of Medicine, Seattle

Department of Pathology, University of Washington, School of Medicine, Seattle

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Jerry Palmer

Jerry Palmer

Diabetes Research Center, University of Washington, School of Medicine, Seattle

Department of Medicine, University of Washington, School of Medicine, Seattle

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Gerald T. Nepom

Gerald T. Nepom

Virginia Mason Research Center, University of Washington, School of Medicine, Seattle

Diabetes Research Center, University of Washington, School of Medicine, Seattle

Department of Pathology, University of Washington, School of Medicine, Seattle

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First published: 1989
Citations: 9

Abstract

The HLA class II-related susceptibility to type I insulin-dependent diabetes mellitus (IDDM) is examined in 94 multiplex families sorted by the presence or absence of a DR4+ haplotype in at least one diabetic family member. The families with DR4+ haplotypes are then sorted by the presence or absence of a DR4-linked DQβ3.2 allele. Further analysis assumes each multiplex family to represent a single diabetic genetic event and identifies the HLA class II haplotype(s) present in all affected members. The DQβ3.2 allele is present in over 95% of the multiplex families where DR4+ haplotypes segregate with IDDM, implying a major permissive role in determining susceptibility to IDDM.

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