How are beta-thalassemia and leukemia related?

See below: They both can cause decreased red blood cells.

Unrelated: Beta thal is a congenital disease-where there is defect on the beta- globin inside the rbc. The severity of the disease depends on how many b- globin affected. Beta thal major is very debilitating- tansfusion dependent and only transplant can perhaps cure it. Leukemia however is malignancy of the progenitors of the white cells-in bone marrow. Different types of leukemia-acute vs chronic leukemia.