TCF4 and non-small cell lung carcinoma: These results were in agreement with a study by Stewart [14], in which the author also found that multiple Wnt ligands, receptors, and other key components, including Wnt-1, Wnt-2, Wnt-3, and Wnt-5a, and those of Wnt pathway components Frizzled-8, Dishevelled, porcupine, and TCF-4 were elevated in NSCLC tissues [14].