The relative protein levels of BTBD7 (0.45 ± 0.16), FN (0.81 ± 0.24), and vimentin (0.42 ± 0.21) in lung cancer tissues were significantly higher (p < 0.05) than those in paracancer tissues (0.20 ± 0.09, 0.26 ± 0.16, and 0.15 ± 0.13, respectively). Here, FN1 is linked to lung carcinoma.