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  • Title: Oligonucleotide microarray for HLA-DRB1 genotyping: preparation and clinical evaluation.
    Author: Zhang F, Hu SW, Huang J, Wang H, Zhang W, Geng YY, Wang SQ.
    Journal: Tissue Antigens; 2005 May; 65(5):467-73. PubMed ID: 15853901.
    Abstract:
    In this study, HLA-DRB1 gene was genotyped by using the microarray technique. Oligonucleotide probes were designed based on partial sequences of various genotypes of HLA-DRB1, and were fixed on a silylated slide to form a microarray. The second exon of HLA-DRB1 gene in the extracted genomic DNA samples was amplified and labelled by means of polymerase chain reaction (PCR); then it was hybridized to the microarray. The microarray was scanned, and the result was analysed in order to determine the genotypes of HLA-DRB1 of the tested sample. A total of 1574 of 1592 clinical samples had accordant results of genotypes in either microarray assay or PCR-SSP assay; 8 of 10 samples that had inconsistent results of genotypes were proved to be microarray-assay reliable by confirmation of DNA sequencing. It is concluded that microarray is an alternative reliable method for HLA-DRB1 genotyping.
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