Thus the Authors explored the changes occurring in the conditioned medium of MSCs co‐cultured with U87: regardless from TGFβ expression, 126 proteins with 10 new expressed proteins were detected, some of which exclusively found after cell‐to‐cell contact, such as profilin2 (PFN2), which regulates actin polymerization, cortactin, a cytoskeletal protein overexpressed in invasive tumor cells, and ezrin, an invasion‐associated protein, indicating that UC‐MSC may exert pro‐tumorigenic effects when in close contact with tumor cells.126. Here, TGFB1 is linked to neoplasm.