TGFB1 and lung cancer: Previous studies have demonstrated the inhibitory effects of epigallocatechin gallate (EGCG), geraniin, and sanguiin H6, which are found in Camellia sinensis, Phyllanthus amarus, and Sanguisorbae Radix, respectively, on TGF-β1-induced EM transition in lung cancer by targeting the Smad signaling pathway [36,37,38].