NTN1 and gastric cancer: Kaplan–Meier survival analysis from TCGA also indicated that GC patients with an increased expression of NTN1 were associated with a worse prognosis (Fig. 4b), and data from an online website (http://kmplot.com/analysis/) showed that the higher expression level of NTN1 predicts the shorter OS, FPS, and PPS (Supplementary Fig. S3b).