Although my mom did not go through this therapy, I do remember looking into it.
I posted a pretty long entry
here.
From what I can gather, unless there is more recent literature that I am unaware of, it appears there is insufficient data to determine whether immunosuppression via cyclophosphomide is indeed a treatment modality to rival the standard ALG/ATG + cyclosporin.
But of course, the best thing to do is get in contact with an expert.
dkimmel,
Could you tell us why cytoxan was chosen in your case?