HLA-DR9
title: "HLA-DR9" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["hla-dr-haplotypes"] topic_path: "general/hla-dr-haplotypes" source: "https://en.wikipedia.org/wiki/HLA-DR9" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
HLA-DR09 (DR9) is a HLA-DR serotype that recognizes the DRB1*0901 gene product.
Serology
The serological reaction of DR9 is relatively good. The serology of DRB1*0902 to *0906 serotypes is unknown.
Disease associations
DRB1*0901: Early childhood myasthenia gravis
Extended linkage
DRB10901:DQA10301:DQB1*0303 haplotype: Early childhood myastenia gravis
Genetic linkage
::data[format=table]
| DRA | DRB1 | DQA1 | DQB1 | DRB1 | HLA-A | HLA-B | DRB1 |
|---|---|---|---|---|---|---|---|
| Haplotypes | *0101 | *0901 | *0101 | ||||
| Haplotypes | *0301 | *0303 | *0901 | ||||
| Haplotypes | *0000 | *0000 | *0901 | ||||
| :: |
HLA-DR9 is genetically linked to HLA-DR53, and HLA-DQ3 and DQ9 serotypes.
References
References
- [http://www.ebi.ac.uk/imgt/hla/allele.html derived from IMGT/HLA]
- (2004). "A variant of childhood-onset myasthenia gravis: HLA typing and clinical characteristics in Japan.". Clin Immunol.
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