Stem cell treatments for PN:
 

This therapy is quickly reaching patients now. So I am going to share a link jurgen975 posted recently and a new thread here which discusses this in more detail:

http://www.innovationsstemcellcenter...al-neuropathy/

the thread:
http://neurotalk.psychcentral.com/thread217758.html

Discussion on this thread is encouraged.

As far as CMT -
 

goes, they are testing laboratory models for CMT1A, 1B, 2A, 2E and 1X. A long way to go for those who have a type of CMT and there are many types. They are doing some kind of research all of the time.