A novel A subtype allele that demonstrates allelic competition

Da Woon Kim, Duck Cho, Mark Harris Yazer, Ho Jin Lee, Kyeong Hee Kim, Myung Geun Shin, Soon Pal Suh, Jong Hee Shin, Dong Wook Ryang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A 68-year-old man with an ABO discrepancy discovered during a routine check up and 3 members of his family were referred for ABO analysis. A novel allele (A w14; 699 C>A, H233Q) was found by sequence analysis of exons 6&7 and in those with the A w14 allele, complete ABO analysis was performed. The propositus and his son had an A w phenotype with the A w14/O01 genotype. His daughter had an A w14/B101 genotype with a normal B phenotype. Three-dimensional molecular modelling was used to predict the effect of the H233Q amino acid change on the resulting A glycosyltransferase. The A w14 produced a weak A phenotype, and its ability to produce A antigens was further reduced when it was co-inherited with a B101 enzyme.

Original languageEnglish
Pages (from-to)282-284
Number of pages3
JournalAnnals of Clinical and Laboratory Science
Volume41
Issue number3
StatePublished - Jun 2011
Externally publishedYes

Keywords

  • A subtype
  • ABO discrepancy
  • Allelic competition

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