If the result shows that the tested DNA is the marrow donor's genotype, this indicates that the transplant was successful. However, if a test shows a return to the patient's own genotype, the implication is that the transplant has failed or that the patient's leukemia has recurred.
而比對結果如果是捐贈者的基因型，代表骨髓移植成功；但如果回到病人原來自己的基因型，則代表移植失敗或復發。