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The Novel Allele HLA-DPA1*02:01:34 Differs From HLA-DPA1*02:01:01:02 by a Synonymous Mutation
He Zhao1,2,3, Destinie Webster1, Didem Hammond1
1Histocompatibility and Immunogenetics Laboratory, St. Paul's Hospital, Saskatoon, Canada.
A novel Human Leukocyte Antigen (HLA) variant, HLA-DPA1*02:01:34, was identified. It differs from a known variant by a single synonymous mutation in Exon 4.
Area of Science:
- Immunogenetics
- Molecular biology
Background:
- Human Leukocyte Antigen (HLA) genes are crucial for immune response.
- Genetic variations within HLA loci contribute to diverse immune phenotypes.
Purpose of the Study:
- To characterize a newly identified HLA-DPA1 allele.
- To detail the specific genetic difference between HLA-DPA1*02:01:34 and HLA-DPA1*02:01:01:02.
Main Methods:
- Sequence analysis of the HLA-DPA1 gene.
- Comparison of genetic sequences to identify variations.
Main Results:
- A novel allele, HLA-DPA1*02:01:34, was identified.
- This allele differs from HLA-DPA1*02:01:01:02 by a single synonymous mutation in codon 212 of Exon 4.
Conclusions:
- The identification of HLA-DPA1*02:01:34 expands the known HLA allele repertoire.
- Synonymous mutations can lead to new HLA allele designations, important for high-resolution typing.
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