Beta-thalassemia-X-linked thrombocytopenia syndrome is a rare inherited disorder that affects the production of red blood cells and platelets. It is caused by a mutation in the gene that codes for the beta-globin protein, which is part of hemoglobin. People with this disorder have anemia, low platelet counts, and an increased risk of bleeding. They may also have other symptoms, such as fatigue, jaundice, and bone deformities. Treatment typically involves blood transfusions and medications to help manage symptoms.