Renal Autologous Cell Therapy (REACT) in Subjects With Type 1 or 2 Diabetes and Chronic Kidney Disease (REGEN-007)

The objective of this study is to assess the safety, efficacy, and durability of up to two Renal Autologous Cell Therapy (REACT)/ rilparencel injections delivered percutaneously into biopsied and non-biopsied contralateral kidneys on renal function progression in two different cohorts of subjects with Type1 Diabetes Mellitus (T1DM) or Type2 Diabetes Mellitus (T2DM) and Chronic Kidney Disease (CKD): * Cohort 1: Two scheduled REACT/ rilparencel injections given 3 months (+60 days) with at least 18- month follow-up * Cohort 2: One scheduled REACT/ rilparencel injection with a possible second REACT/ rilparencel injection, no less than 3 months after the first one, within 30 days (+30 days) of meeting a renal function redose trigger (triggered up to 15 months following the first REACT/ rilparencel injection). Both cohorts will be followed for 18 months after the final REACT/ rilparencel injection. If a Cohort 2 subject does not meet a trigger, the subject will be followed for at least 18 months after the first injection.