We report a novel mutation on the α2-globin gene, HBA2: c.184A>T, detected in a Chinese proband. This mutation resulted in a Lys→Term substitution at position 62 of the α2-globin gene, causing a premature termination of translation. This mutation did not cause severe hematological abnormalities in the carriers. From the properties of substituted residues on the α2-globin gene, it is generally expected that this mutation causes unstable and truncated protein, thus this mutation should be detected in couples at-risk for α-thalassemia (α-thal).
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