I considered it a few years ago, but my neuro discouraged me because it seems to not work as well for those with MuSK MG and because of the risk of activation of the JC virus. Now, however, there is a test for JC virus that you can do prior to making a decision.

Sorry the Cytoxan goodness has petered out on you. I'm in much the same boat. Have you considered another round of that, since it did a good job?

Good luck with your decision and with whatever you decide to try!