@sb4ca @goldacharna I found an article on the Science Direct site that mentions a genetic link with CIDP.
http://www.sciencedirect.com
Look up Demyelinating Neuropathy. The article is by Noah Levinson, and Christina Edmundson. Decision Making Adult Neurology, 2021

Paragraphs C & D discuss genetic factors.

I tried to copy and paste but was unable to…if you need help finding it please let me know.