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 language | English |
|---|---|
| Pages (from-to) | 282-284 |
| Number of pages | 3 |
| Journal | Annals of Clinical and Laboratory Science |
| Volume | 41 |
| Issue number | 3 |
| State | Published - Jun 2011 |
| Externally published | Yes |
Keywords
- A subtype
- ABO discrepancy
- Allelic competition