α-Thalassemia Caused by Two Novel Splice Mutations of the α2-Globin Gene: IVS-I-1 (G>A and G>T)

We report the identification of two different mutations involving the first nucleotide of intron 1 of the α2-globin gene: IVS-I-1 G→A and G→T. The available data indicated that both mutations reduce the efficiency of proper mRNA splicing, resulting in α+-thalassemia (α+-thal).