TGFB1 and neoplasm: The results of mIF showed that the H-scores of TGF-β1 (P = 0.0055), TGF-β2 (P = 0.0172), and TGF-β3 (P = 0.0080) were significantly higher in EGFRΔ19-mutated tumor tissue than in EGFR WT tumors (Fig. 1D–F).