A Novel Frameshift Mutation at Codons 138/139 (HBB: c.417_418insT) on the β-Globin Gene Leads to β-Thalassemia.

Abstract excerpt

We describe a new β-thalassemic mutation in a Chinese subject. This allele develops by insertion of one nucleotide (+T) between codons 138 and 139 in the third exon of the β-globin gene. The mutation causes a frameshift that leads to a termination codon at codon 139. In the heterozygote, this allele has the phenotype of classical β-thalassemia (β-thal) minor.

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