It's great news for full-match bone marrow transplant patients. It shows again that they can replace 6 months of immunosuppression with 2 days of cyclophosphamide to help prevent GVHD.
Post-transplant cyclophosphamide also apparently helps with the success of the transplant itself, reducing rejection rates. Cyclophosphamide is used to attack the old (damaged) immune system before the transplant, so it must somehow suppress a response from the old immune system without interfering with the new immune system.
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