There are, however instances where doctors will determine that a patient isn’t a good candidate for a kidney transplant. Patients who suffer from infection or cancer typically aren’t considered. If you have a short life expectancy or abuse alcohol or drugs, you won’t get a transplant either. Sometimes doctors will determine that it isn’t safe to operate on a patient, and in these cases, kidney transplants can’t be performed (via the Cleveland Clinic). Your doctor will also evaluate whether the risks of the transplant may outweigh the benefits for your specific situation.