TGFB1 and metastatic malignant neoplasm: Other than proteins, miRNA and lncRNA targeting TGF-β, its receptors or downstream effectors (Hao et al., 2019), TGF-β signaling is also opposed by BMP signaling – commonly associated to a MET-promoter effect – in many metastatic cancers (Gao et al., 2012; Karagiannis et al., 2013; Vollaire et al., 2019).