Getting any type of bone marrow transplant is risky. However, usually using autologous bone marrow transplant is more advantageous because you are using your own body’s stem cells inside of ones from a donor. The big risk with allogeneic bone marrow transplant is the incompatibility issue. Finding a perfect match can be tough and there is a higher risk of having complications such as GVHD among others. There might be a requirement for you to take medications so that your body cells don’t end up attacking the donor stem cells. This can make you more prone to health problems.