Hi, My son have blood cancer and doctor suggest bone marrow transplant treatment. His age is 4 years and we already did HLA match. His sister is donor for that process her age is 11 years. The HLA report is Half match (50%).so I want to know in half match BMT is possible. What is risk and how much success ratio in this conditions, and how much it cost ,how much time it will take to recover. Please give me answer as soon as possible. Thank u.