An allogenic transplant is when bone marrow or stem cells are taken from a donor with a similar genetic profile to that of the patient. A close genetic match may be found among the patient's immediate family. Without a family link, a donor search of the National Marrow Donor Program Registry database can help locate a suitable genetic match. An allogenic transplant is often used to treat certain types of cancer, or if you have a condition that interferes with your natural bone marrow production. These new cells are transplanted into your body to help replace damaged or disease bone barrow, and to provide new stem cells that can help kill cancer directly. You and your donor will be required to undergo a series of tests and procedures to make sure you both are healthy and able to complete the transplant.