There are some in current use. There is currently in phase 3 clinical trials of the most promising one. I don't know of anything specific. Dr. Maguire can be contacted, though for a phone medical consult. I'll try to find the link. geraldmagiremd@gmail.com There's also a new Facebook group. The admin is a patient of Dr.Maguire and he is now 99% fluent. Group https://www.facebook.com/photo.php?fbid=1908545459494342&set=gm.735784164942342&type=3&mibextid=DcJ9fc Good luck, Sue