- Conditioning with high-dose cyclophosphamide may not be sufficient to provide a long-term remission of paroxysmal nocturnal hemoglobinuria following syngeneic peripheral blood stem cell transplantation. Cho, S.G., Lim, J., Kim, Y., Eom, H.S., Jin, C.Y., Han, C.W., Kim, C.C. Bone Marrow Transplant. (2001)