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A novel HLA-B*27 allele, B*27:138, identified by sequence-based typing
B T Koay1, K F Norfarhana1, M Y M Norhafizi1
1Allergy and Immunology Research Centre, Institute for Medical Research, Kuala Lumpur, Malaysia.
Tissue Antigens
|June 25, 2015
Summary
The human leukocyte antigen (HLA) B*27:138 variant differs from the B*27:06 allele by two specific nucleotide alterations within exon 3. This finding contributes to understanding HLA polymorphism.
Area of Science:
- Immunogenetics
- Molecular biology
Background:
- The human leukocyte antigen (HLA) system plays a critical role in immune response and transplantation.
- HLA-B alleles are highly polymorphic and associated with various autoimmune diseases.
Observation:
- A novel HLA-B allele, designated HLA-B*27:138, was identified.
- Sequence analysis revealed specific genetic differences compared to known alleles.
Findings:
- HLA-B*27:138 is distinguished from HLA-B*27:06 by two nucleotide substitutions.
- These variations are located within exon 3 of the HLA-B gene.
Implications:
- Understanding these specific genetic variations is crucial for high-resolution HLA typing.
- This detailed allelic information can aid in studies of HLA-disease associations and transplantation compatibility.
