There may be others but I did recently see this clinical trial at Rochester Mayo Clinic but like most clinical trials it would depend on the cause of your neuropathy and other factors they want to study.

--- Stem Cells from Skin Fibroblasts in Patients with Hereditary Peripheral Neuropathy: https://www.mayo.edu/research/clinical-trials/cls-20319883

It looks like they have 19 studies on neuropathy at different locations. Here are the search results - https://www.mayo.edu/research/clinical-trials/search-results?keyword=neuropathy&studySiteStatusesGrouped=Open/Status%20Unknown