When you have a bone marrow transplant your odds of survival are 62 percent after receiving the bone marrow transplant.
During a Bone Marrow Transplant the person's blood-forming stem cells are eliminated and then they're replaced with new, healthy ones that are obtained from either a donor or from donated umbilical cord blood or the persons own cord blood that has been banked through cord blood banking.
Without a Bone Marrow Transplant then you have a less chance of survival so it's a good idea to get a Bone Marrow Transplant if needed to increase your chances of survival.