ERBB2 and gastric cancer: Significant progress in the diagnosis and treatment of GC has been made, such as development of novel human epidermal growth factor receptor 2 (HER2)-targeted drugs for GC (Zhu et al., 2021), the development of minimally invasive surgery, and endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) (Roh et al., 2020; Wang et al., 2021).