Alpha thalassaemia related syndromes

**Definition:** Alpha-thalassemia-related diseases refers to a group of diseases characterised by alpha-thalassemia and an associated disorder. Three conditions are included in this group: alpha-thalassemia-intellectual deficit syndrome, X-linked (or ATR-X syndrome), alpha-thalassemia-intellectual deficit syndrome and alpha-thalassemia-myelodysplastic disease or ATMDS.