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Updated: Oct 1, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
A novel mutation in exon 5 of the ALAS2 gene results in X-linked sideroblastic anemia
Matthew T Hurford1, Cristina Marshall-Taylor, Sandy L Vicki
1Department of Pathology and Laboratory Medicine, Hartford Hospital, 80 Seymour Street, Hartford, CT 06102, USA.
Background:
Mutations in the erythroid-specific 5-aminolevulinate-synthase gene (ALAS2) have been identified in many cases of X-linked sideroblastic anemia (XLSA).
Methods:
A polymerase chain reaction-mediated restriction fragment length polymorphism (RFLP) assay was used.
Results:
A G527T point mutation was identified. This resulted in a substitution of tyrosine for asparagine at residue 159 (D159Y). This mutation was also identified in the mother of the two probands. Mutations in all three individuals were confirmed by DNA sequencing analysis.
Conclusions:
We identified a missense mutation in exon 5 of the ALAS2 gene in two brothers of a consanguineous marriage, who were clinically pyridoxine-responsive.
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