<unk>  is caused by inheritance of a<unk> <unk>  allele from one parent and a<unk>  thalassemia allele from the other. Mutations A<unk>  allele is always the same mutation of the<unk> -globin gene (glutamic acid to valine at amino acid six). In contrast,<unk> -thalassemia alleles can be created by many different mutations including both deletion and non-deletion forms.
Sickle cell-beta thalassemia
Delta-beta thalassemia
Beta thalassemia
Twin anemia-polycythemia sequence
Donath–Landsteiner hemolytic anemia
Alpha-thalassemia
Warm antibody autoimmune hemolytic anemia
Cold autoimmune hemolytic anemia