Two novel α2 gene mutations causing altered amino acid sequences produce a mild (Hb Kinshasa, HBA2: c.428A > T) and severe (HBA2: c.342-345insCC) α-thalassemia phenotype.
Simultaneous detection of Hb constant spring (α142, TAA>CAA, α2) and the α2 IVS-I donor site (-TGAGG) deletion by a simple polymerase chain reaction-based method in Iran.