Korean J Blood Transfus.
2013 Aug;24(2):181-185.
A Case of ABO* cis-AB01/Ax03 Found in A2B3 Phenotype
- Affiliations
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- 1Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea. dcho@chonnam.ac.kr
- 2Department of Public Health, Chonnam National University Graduate School, Gwangju, Korea.
Abstract
- The cis-AB blood group is rare; however, it is relatively more common in the Korean and Japanese populations. Among nine cis-AB alleles, only the cis-AB01 allele has been reported in the Korean population. When the A2B3 phenotype is found, it has the cis-AB01/O genotype; to date, it has not been reported in any other genotype. Here we report on an extremely rare case of cis-A2B3 found in the cis-AB01/Ax03 genotype. EDTA samples of a 52-year-old male with hepatocellular carcinoma and his family were sent to our laboratory. Standard ABO typing and sequencing of exons 6 and 7 of the ABO gene of the propositus and his family were performed: the propositus with the A2B3 type had cis-AB01/Ax03, brother with O type had O01/O02, sister with O type had Ax03/O01, son with B type had Ax03/B101, and daughter with A1B3 type had cis-AB01/A102. Results based on family study and genotyping revealed that the propositus had both cis-AB01 and Ax03 alleles. This is the first case of A2B3 phenotype with cis-AB01 with an allele other than the O allele in the cis-AB blood group reported so far.
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