Fig. 4

COL5A2 impact on the overall survival of patients with GC. a Kaplan–Meier curve was used to analyze the relationship between COL5A2 mRNA expression and prognosis of GC patients based on TCGA data (p = 0.013). b Kaplan–Meier curve was used to analyze the relationship between COL5A2 mRNA expression and prognosis of GC patients based on GEO data (p = 0.025). c-e Time-dependent ROC curves of patients’ OS at 1, 3, and 5 years depending on COL5A2 expression (c), age (d) and tumor stage (e) in the TCGA-STAD datasets