Identification of a novel allele human leukocyte antigen B*4609.
- Author:
Yang CHEN
1
;
Jian-ping LI
;
Kun-lian ZHANG
;
Xu ZHANG
;
Xian-zhi LIU
Author Information
- Publication Type:Journal Article
- MeSH: Alleles; Amino Acid Substitution; Base Sequence; Cloning, Molecular; HLA Antigens; genetics; immunology; HLA-B Antigens; genetics; immunology; Humans; Molecular Sequence Data; Polymorphism, Single Nucleotide; Sequence Homology, Nucleic Acid
- From: Chinese Journal of Medical Genetics 2008;25(4):459-461
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo identify a novel human leukocyte antigen (HLA) allele.
METHODSHLA typing was carried out with PCR-SSOP. Molecular cloning and DNA sequencing were used to identify the sequence of a potential novel allele and the difference between this new allele and other known alleles was analyzed.
RESULTSHLA genotyping of one sample gave different results. The sequencing results showed that the HLA B alleles of the proband were B*151101 and a novel allele. The nucleotide sequence of the novel allele was different from all other known B alleles. It had one nucleotide change from the closest matching allele B*460101 at nucleotide 527 (A to T) in exon 3, resulting in an amino acid change from E (GAG) to V (GTG) at codon 176.
CONCLUSIONA novel HLA B allele was identified and officially designated as HLA B*4609 by WHO Nomenclature Committee for Factors of the HLA System in November, 2006.
