Post-transplant PT/FLU+CY Promotes Unrelated Cord Blood Engraftment in Haplo-cord Setting in Childhood Leukemia

This study is testing a stem cell transplant approach that combines cells from an unrelated cord blood donor with cells from a family member (haplo-cord transplant) in children with leukemia. Researchers are studying whether adding certain chemotherapy drugs after the transplant helps the cord blood cells grow and take hold in the body. **You may be eligible if...** - You are a child diagnosed with acute leukemia - Your doctor has recommended a stem cell transplant **You may NOT be eligible if...** - You have multiple organ dysfunction syndrome (MODS), a serious condition where multiple organs are failing Talk to your doctor to see if this trial is right for you.