Previous reports showed that TGF-β1 can causegrowth inhibition in normal human bronchial epithelial (NHBE) [30] and BEAS-2Bcells [31],but not in human lung carcinoma A549 cells [30] as well as BEAS-2B cellsoverexpressing mutant p53 [31]. The gene discussed is TGFB1; the disease is lung carcinoma.