@35427689, The website for the facility has a lot of testimonials but I would still be uncomfortable with any kind of regenerative medicine at any place other than a large well known medical facility or teaching hospital. Can you ask them if they have FDA approval?

Ohio Advanced Medical Regenerative Medicine
-- http://www.ohioadvancedmedical.com/

FDA Warns About Stem Cell Therapies
-- https://www.fda.gov/consumers/consumer-updates/fda-warns-about-stem-cell-therapies

Does your mother have a specific type of nephropathy? Mayo Clinic has some information that may be helpful.

Diabetic nephropathy - Diagnosis & Treatment
-- https://www.mayoclinic.org/diseases-conditions/diabetic-nephropathy/diagnosis-treatment/drc-20354562

Diabetic Nephropathy Clinic
-- https://www.mayoclinic.org/departments-centers/nephrology-hypertension/minnesota/overview/specialty-groups/diabetic-nephropathy-clinic

IgA nephropathy (Berger's disease) - Diagnosis & Treatment
-- https://www.mayoclinic.org/diseases-conditions/iga-nephropathy/diagnosis-treatment/drc-20352274

Membranous nephropathy - Diagnosis & Treatment
-- https://www.mayoclinic.org/diseases-conditions/membranous-nephropathy/diagnosis-treatment/drc-20365286