These decidual-like NKs acquire the CD56brightCD9+CD49a+ decidual-like phenotype [43,45,46,47,48], and support tumor angiogenesis in a TGFβ [43,45] and STAT3-dependent [47] manner, by favoring angiogenesis, directly acting on endothelial cells or by generating pro-angiogenic M2-like/TAMs [45]. This evidence concerns the gene STAT3 and neoplasm.