A novel HLA-C*18 variant allele, HLA-C*18:20, identified by next-generation sequencing

Area of Science:

• Immunogenetics
• Molecular biology
• Human leukocyte antigen (HLA) research

Background:

• The human leukocyte antigen (HLA) system is crucial for immune response.
• Polymorphisms within HLA genes, such as HLA-C, are significant for transplantation and disease association studies.

Purpose of the Study:

• To report the identification and characterization of a novel HLA-C allele.

Main Methods:

• Nucleotide sequencing of the HLA-C gene.
• Analysis of sequence data to identify variations from known alleles.

Main Results:

• A missense nucleotide substitution was detected at codon 95 of the HLA-C*18:01:01:01 allele.
• This substitution defines a new allele, designated HLA-C*18:20.

Conclusions:

• The identification of HLA-C*18:20 expands the known HLA-C allele repertoire.
• This novel allele may have implications for high-resolution HLA typing and population genetics studies.