title: HLA-C high resolution typing: analysis of exons 2 and 3 by sequence based typing and detection of polymorphisms in exons 1-5 by sequence specific primers.
abstract: HLA-C high resolution sequence based typing developed in this study involves a unique DNA amplification encompassing exon 1 to intron 3 and four fluorescent sequencing reactions covering exon 2 and 3. Both dye primer and dye terminator sequencing techniques were performed and results compared. This approach allowed the identification of all of the 50 HLA-C allelic variants so far described, except for two allele pairs that are distinguished by non-coding nucleotide changes (Cw*12021 = 12022, Cw*15051 = 15052) and three allele pairs (Cw*0701 = 706, Cw*1701 = 1702 and Cw*1801 = 1802) that share the same nucleotide sequence in exon 2 and 3. For complete subtyping of these allelic variants, an amplification based on sequence specific primers (PCR-SSP) was used. No ambiguous heterozygous combinations of alleles were detected in our panel so far. HLA-C typing data obtained by this method were compared with data from serological and low resolution PCR-SSP typing, which had been performed previously on the samples sequenced.
authors.affiliation: National Cancer Institute, IST, Advanced Biotechnology Center, Genova, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Delfino
authors.forename: A
authors.initials: A
authors.lastname: Morabito
authors.forename: A
authors.initials: A
authors.lastname: Longo
authors.forename: G B
authors.initials: GB
authors.lastname: Ferrara
mesh_terms: D001483:Base Sequence; D017931:DNA Primers; D005091:Exons / Q000235:genetics*; D015236:HLA-C Antigens / Q000235:genetics*; D006650:Histocompatibility Testing / Q000379:methods*; D006801:Humans; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic / Q000235:genetics*; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid
chemical_list: D017931:DNA Primers; D015236:HLA-C Antigens