To assess the safety of pEPCs, pEPCs were transplanted into diabetic model mice for a duration of 3 months, in which that levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and immunoglobulin G2 (IgG2) were not significantly different from those in normal mice, and no tumor‐like structures were observed in the organs of the model mice (Figure S12). This evidence concerns the gene GPT and neoplasm.