There is a new Clinical Trial in the recruiting stage for a new medicine to treat CIDP and some variants. The new medicine from Sanofi is dubbed SAR445088. It will no doubt have another name assigned to it if the Trial is successful. The Trial is just starting and it will likely take 2-3 years before the new Med is reviewed for approval by the FDA. You can follow/participate in the Trial here:
https://www.clinicaltrials.gov/ct2/show/NCT04658472
There is also a GBS/CIDP Foundation article here:
https://www.gbs-cidp.org/2022/03/18/sanofi-clinical-trial-cidp-patients