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Related Experiment Videos

A new allele, HLA-DRB4*010304.

M E Fasano1, E Dametto, S Day

  • 1Transplantation Immunology Service, S. Giovanni Hospital, Turin, Italy. mfasono@molinette.piemonte.it

Tissue Antigens
|July 16, 2003
PubMed
Summary
This summary is machine-generated.

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A new human leukocyte antigen (HLA) allele, DRB4*010304, was identified during routine HLA typing for a liver transplant patient. This novel allele differs from a known allele by a single nucleotide change in exon 2.

Area of Science:

  • Immunogenetics
  • Molecular Biology
  • Transplantation Science

Background:

  • Human Leukocyte Antigen (HLA) typing is crucial for transplantation compatibility.
  • The DRB4 gene locus plays a significant role in immune responses and transplantation outcomes.
  • Accurate HLA allele identification is essential for minimizing transplant rejection.

Purpose of the Study:

  • To report the discovery and characterization of a novel DRB4*01 allele.
  • To document the specific genetic variation defining the new allele.
  • To contribute to the comprehensive catalog of human HLA polymorphisms.

Main Methods:

  • Routine DNA-based HLA typing was performed on a patient awaiting liver transplantation.
  • High-resolution DNA sequencing was employed to confirm and characterize the novel allele.

Related Experiment Videos

  • Comparative sequence analysis was conducted against known HLA allele sequences.

    • Main Results:

    • A novel DRB4*01 allele, designated DRB4*010304, was identified.
    • The new allele shares sequence identity with DRB4*01030101 at exon 2.
    • A single nucleotide substitution (T instead of C at position 216) distinguishes DRB4*010304 from DRB4*01030101.

    Conclusions:

    • The identification of DRB4*010304 expands the known HLA allele repertoire.
    • This finding underscores the importance of high-resolution typing for detecting rare HLA variants.
    • Accurate characterization of novel alleles is vital for immunogenetic databases and clinical applications in transplantation.