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- W2159851007 abstract "Background: The Rh blood group system is highly polymorphic and next to the ABO system is the most clinically significant in transfusion medicine. The frequency of D- phenotypes and the underlying molecular genetics vary widely in different populations. Objectives: We determined the prevalence of different D- phenotypes among Malaysian blood donors in a tertiary medical centre and identified the molecular basis of Chinese D- donors in this population. Materials and methods: A total of 146 D- Chinese donors with various Rh phenotypes were identified from review of blood donor records between January 2003 and September 2008. Fresh blood samples from 36 of these donors were obtained and further characterized by PCR-SSP to determine the molecular basis of these D- individuals. Results: A total of 86,620 blood donor records were reviewed. Of these 911 were D-, consisting of 483 Indians, 189 Malays and 146 Chinese. The ccee phenotype was the most common among D- individuals with a prevalence of 91.51% (442/483) in Indians, 74.60% (141/189) in Malays and 55.48% (81/146) in Chinese. D- phenotypes with C and/or E antigens were most common in Chinese {44.52% (65/146)}.In the molecular analysis of the 36 D- Chinese donor samples, 19 samples with ccee phenotype and 5/17 of samples with Ccee phenotype showed no detectable RHD gene. The remaining 12/17 Ccee samples had intact RHD genes with RHD (K409K) mutation. Conclusion: In our donor population, we found a wide variation in the incidence of D- as well as the distribution of various Dphenotypes among the three major ethnic groups. A significant number of D- Chinese donors with Ccee phenotype were found to be DEL with RHD (K409K) mutation. DEL red cells are known to cause anti-D alloimmunization. Therefore, in clinical practice, it is important to exclude DEL RBCs from D- donor pools. Keywords: Chinese D- donors, DEL variant, Malaysian blood donors, molecular genotyping, RhD-negative phenotypes" @default.
- W2159851007 created "2016-06-24" @default.
- W2159851007 creator A5071376211 @default.
- W2159851007 date "2012-02-01" @default.
- W2159851007 modified "2023-09-24" @default.
- W2159851007 title "Molecular analysis of Malaysian Chinese D- donors: a single centre experience" @default.
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- W2159851007 doi "https://doi.org/10.5372/1905-7415.0601.123" @default.
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