Abnormal or absent β mRNA in β0 Ferrara and gene deletion in δβ thalassaemia

Abstract
In patients with β0 thalassaemia from Ferrara, β globin mRNA sequences are either absent or structurally abnormal while in β0 thalassaemia in Catania, β globin mRNA sequences are present. In δβ thalassaemia there is a deletion of β-like globin genes, while in β0 Catania DNA, no β globin gene deletion is detectable.