INS and type 1 diabetes mellitus: A recent meta-analysis which included bone marrow-, umbilical cord-, adipose-, and Wharton’s jelly-derived MSC therapy in patients with T1D and T2D confirmed improved C-peptide levels, lower HbA1c and blood glucose levels, and lesser insulin requirement without serious or chronic adverse responses [38] and concludes a more beneficial effect of MSCs in the treatment of T1D than in T2D.