Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9296343 | Journal of Laboratory and Clinical Medicine | 2005 | 5 Pages |
Abstract
The Rhesus (Rh) blood group is the most polymorphic human blood group system, and it is clinically significant in transfusion medicine. About 15% of Caucasoid people are RhD-negative, whereas in the Asian population, the RhD-negative blood type only occurs in 0.1% to 0.5%. However, approximately 30% of apparently RhD-negative Taiwanese people actually were RhDel. Traditionally, we verify RhDel by a serologically adsorption-elution procedure with polyclonal anti-D. In our recent report, RhC phenotype is highly associated with RhDel, and RHD1227A is a useful genetic marker for RhDel. For setting up a rapid protocol to detect RhDel in clinical laboratory, a total number of 395 Taiwanese serological RhD-negative blood samples, those with RhC (+) phenotypes as selected by serological tests, were further screened by adsorption/elution tests and RHD1227A allele by specific sequence primer-polymerase chain reaction (SSP-PCR) for RhDel. Among 395 blood samples collected from RhD-negative subjects, the incidence of RhC (+) was 43% (171/395). One hundred and twenty six of the 171 RhC (+) samples were positive for both adsorption/elution for RhD detection and SSP-PCR assay for RHD1227A. The sensitivity and specificity were 96.9% and 97.5%, respectively, for RHD1227A detection as compared with the traditional adsorption/elution test. Our results also indicated that RHD1227A was highly linked to Ce haplotypes (95.2%). In conclusion, combined RhC (+) phenotyping and RHD1227A analysis can be a simple and accurate laboratory screening protocol for RhDel detection in RhD-negative population.
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Authors
Ya-Hui Wang, Jung-Chin Chen, Kuan-Tsou Lin, Yu-Jen Lee, Yu-Fen Yang, Tsun-Mei Lin,