Beta-thalassemia - X-linked thrombocytopenia is a form of beta-thalassemia (see this term) characterized by splenomegaly and petechiae, moderate thrombocytopenia, prolonged bleeding time due to platelet dysfunction, reticulocytosis and mild beta-thalassemia. The disease is Orphanet rare-disease nomenclature identifier Orphanet_231393 (Beta-thalassemia - X-linked thrombocytopenia). Also known as: XLTT.