Erica,
I'm sorry to hear that Andre isn't making more progress.
I know that there are Marrowforums members who have had cyclophosphamide treatment for severe AA. If you
search these forums you'll find a number of discussions about cyclophosphamide. Be sure to search on the brand name too: Cytoxan.
Be aware that cyclophosphamide can cause infertility in both men and women. The chances of this side effect increase with age and with the length of the treatment time. If that's a concern be sure to bring it up with Andre's doctor.
You might contact
Dr. Brodsky at Johns Hopkins since he's one of the experts on this treatment.