Edit: Thanks, everyone!
I know an incredibly smart senior here near Milwaukee County, WI who’s disabled by MS and has been restricted to using a scooter for years. He’d love to walk again, but I but I don’t know how he can get involved in studies like this: https://www.nature.com/articles/d41586-025-00863-0
All I could find was the ISSCR (Int’l Society for Stem Cell Research), but I don’t think reaching them directly would be fruitful, would it?
Look at university websites near you. They should have studies listed. It’s a crapshoot if they happen to research MS though