TGFB1 and neoplasm: INHBA encodes the TGF-β family member Activin A, which has been reported to: 1) impair anti-tumor immunity by inhibiting NK cell proliferation and granzyme B production (90); 2) promote regulatory T cell infiltration into tumors treated with radiotherapy and TGF-β blockade (91); and 3) function as a Th2 cytokine to induce macrophage M2 polarization (92).