PTK2 and gastric cancer: Peiminine induces apoptosis through both extrinsic and intrinsic apoptotic pathways in liver cancer, represses proliferation and growth of colorectal carcinoma by inducing autophagic cell death, and serves as an adriamycin chemosensitizer via the EGFR/FAK pathway in gastric cancer (Lyu et al., 2015; Tang et al., 2018; Chao et al., 2019).