Whole genome sequence-based haplotypes reveal a single origin of the 1393 bp HBB deletion.

Abstract excerpt

BACKGROUND: Mutations of HBB give rise to two prevalent haemoglobin disorders-sickle cell disease (SCD) and β-thalassaemia. While SCD is caused by a single base substitution, nearly 300 mutations that downregulate expression of HBB have been described. The vast majority of β-thalassaemia alleles are point mutations or small insertion/deletions within the HBB gene; deletions causing β-thalassaemia are very rare....

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