With new data showing similar outcomes of mismatched unrelated donor and haploidentical related donor allogeneic transplants using post transplant cyclophosphamide, how does one decide which donor is optimal?

It is certainly an unresolved question, and the short answer is that either would be an acceptable option with post-transplant cyclophosphamide (and I have used both). All recipients of mismatched donor transplants should be tested for the presence of donor specific antibodies, and their presence co...