PMID- 17054408 OWN - NLM STAT- MEDLINE DCOM- 20061201 LR - 20061023 IS - 1462-2416 (Print) IS - 1462-2416 (Linking) VI - 7 IP - 7 DP - 2006 Oct TI - Development and clinical evaluation of oligonucleotide microarray for HLA-AB genotyping. PG - 973-85 AB - BACKGROUND: The antigens encoded by human leukocyte antigen (HLA) genes are primary antigens in immunological response of transplantation, and genotypes of HLA-A, B and DRB1 must be determined on donors and recipients before the transplantation is carried out. In this study, oligonucleotide microarray for HLA-AB genotyping was prepared and evaluated. METHODS: Oligonucleotide probes were designed based on the sequence of the different genotypes of HLA-A and B and were fixed on silylated glass slides to form a microarray. Fluorescence-labeled target DNA was obtained by asymmetric polymerase chain reaction amplification of exon 2 and exon 3 of HLA-A and -B genes and hybridized to the microarray. The hybridized microarray was subsequently scanned and the result was analyzed by software in order to determine the genotypes of the tested sample. RESULTS: The sensitivity of the microarray for HLA-AB genotyping was 10 ng/microl, with a coincidence rate of 100% with international reference, and a combined variation value of detected signal below 15%. Analysis of genotyping of 1295 cases of clinical samples showed that the general coincidence rate between the microarray method and conventional method (polymerase chain reaction-sequence-specific primer and flow cytometry reverse polymerase chain reaction sequence-specific oligonucleotide) was HLA-A: 99.61% and HLA-B: 98.30%, respectively. A total of five out of seven samples that had conflicting results of genotypes were proved to be microarray-assay reliable by DNA sequencing, suggesting a higher accuracy of the microarray method. CONCLUSION: The microarray for HLA-AB genotyping is satisfactory for clinical use in HLA-AB genotyping with its good specificity, sensitivity and reproducibility. FAU - Zhang, Fan AU - Zhang F AD - Beijing Institute of Radiation Medicine, Beijing 100850, China. FAU - Hu, Shouwang AU - Hu S FAU - Huang, Jian AU - Huang J FAU - Wang, Hui AU - Wang H FAU - Wen, Zheng AU - Wen Z FAU - Yongyao, Geng AU - Yongyao G FAU - Wang, Shengqi AU - Wang S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Pharmacogenomics JT - Pharmacogenomics JID - 100897350 RN - 0 (DNA Probes) RN - 0 (HLA-A Antigens) RN - 0 (HLA-B Antigens) RN - 0 (Oligonucleotides) SB - IM MH - DNA Probes MH - Double-Blind Method MH - Exons/genetics/immunology MH - Flow Cytometry MH - Genotype MH - HLA-A Antigens/*immunology MH - HLA-B Antigens/immunology MH - Humans MH - Nucleic Acid Hybridization MH - *Oligonucleotide Array Sequence Analysis MH - Oligonucleotides/*genetics MH - Reproducibility of Results MH - Reverse Transcriptase Polymerase Chain Reaction MH - Software EDAT- 2006/10/24 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/10/24 09:00 PHST- 2006/10/24 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/10/24 09:00 [entrez] AID - 10.2217/14622416.7.7.973 [doi] PST - ppublish SO - Pharmacogenomics. 2006 Oct;7(7):973-85. doi: 10.2217/14622416.7.7.973.