Sickle cell-Hb<unk>  Boston syndrome is a type of sickle cell disease (HbS) that differs from homozygous sickle cell disease where both parents carry sickle<unk> . In this variant one parent has the sickle cell<unk>  the second parent has Hb<unk>  Boston, the only one of the three variants described in association with HbS.
Hemoglobin Lepore syndrome
Freeman–Sheldon syndrome
3-M syndrome
Sick cell syndrome
Beta thalassemia
Hughes–Stovin syndrome
Fryns-Aftimos syndrome
Diamond–Blackfan anemia