COL1A1 and gastric cancer: The expression of SERPINE1 (P=4.8e-05), ANGPT2 (P=0.0092), HS3ST2 (P=0.0084), COL1A1 (P=0.014) and COL5A2 (P=0.01) were correlated with worse overall survival (OS) of GC (Fig. 2C-2G).