A novel HLA variant, HLA-C*03:376, detected by next generation sequencing

Area of Science:

• Immunogenetics
• Molecular Biology
• Human Leukocyte Antigen (HLA) system

Background:

• The Human Leukocyte Antigen (HLA) complex plays a critical role in immune response and transplantation.
• Polymorphisms within HLA genes, particularly HLA-C, contribute to immune diversity and disease susceptibility.
• Accurate HLA typing is essential for clinical applications such as organ transplantation and disease association studies.

Purpose of the Study:

• To report the discovery and characterization of a novel HLA-C allele.
• To provide detailed information on the genetic variation within the HLA-C locus.

Main Methods:

• High-resolution HLA typing was performed using next-generation sequencing (NGS) or other high-resolution typing methodologies.
• Sequence analysis was conducted to identify nucleotide differences compared to known HLA-C alleles.
• The identified novel allele was compared against existing HLA databases.

Main Results:

• A new HLA-C allele, designated HLA-C*03:376, was identified.
• HLA-C*03:376 differs from the known allele HLA-C*03:04:01 by a single nucleotide substitution located in exon 6.
• This substitution results in a distinct genetic profile for the novel allele.

Conclusions:

• The identification of HLA-C*03:376 expands the known diversity of the HLA-C locus.
• This finding contributes to a more comprehensive understanding of HLA polymorphism.
• Accurate characterization of novel HLA alleles is crucial for advancing immunogenetic research and clinical practice.