Abstract
X-linked sideroblastic anemia (XLSA) is the most common form of congenital sideroblastic anemia. In affected males, it is uniformly associated with partial loss-of-function missense mutations in the erythroid-specific heme biosynthesis protein 5-aminolevulinate synthase 2 (ALAS2). Here, we report five families with XLSA owing to mutations in a GATA transcription factor binding site located in a transcriptional enhancer element in intron 1 of the ALAS2 gene. As such, this study defines a new class of mutations that should be evaluated in patients undergoing genetic testing for a suspected diagnosis of XLSA.
Original language | English |
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Pages (from-to) | 315-319 |
Number of pages | 5 |
Journal | American Journal of Hematology |
Volume | 89 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- 5-Aminolevulinate Synthetase
- Adult
- Aged
- Anemia, Sideroblastic
- Binding Sites
- Enhancer Elements, Genetic
- Europe
- Female
- GATA Transcription Factors
- Genetic Diseases, X-Linked
- Genotype
- Humans
- Introns
- Male
- Middle Aged
- Mutation
- Pedigree
- Young Adult
- Journal Article
- Research Support, N.I.H., Intramural
- Research Support, Non-U.S. Gov't
- Research Support, U.S. Gov't, Non-P.H.S.