Leukemia is a type of cancer that affects the blood and bone marrow. Leukemia begins in a cell in the bone marrow.

Thalassemia is a blood disorder passed down through families (inherited) in which the body makes an abnormal form or inadequate amount of hemoglobin.

Hemophilia is a rare disorder in which your blood doesn’t clot normally because it lacks sufficient blood-clotting proteins (clotting factors).