NDRG1 and neoplasm: Given that TGFβ1 was found to activate GSK3β (p-GSK3β Tyr216) in MCF10A breast cells and human fibroblasts 36,37, we questioned whether staining of this active form in TNBC tumor tissue (Fig. S2E; Table S2), could correlate with NDRG1 and p-NDRG1 staining.