CAPNS1 and gastric cancer: A growing body of evidence has demonstrated its promising prognostic biomarker potential and the crucial roles of Capn4 in metastatic phenotypes, from tumour invasion to progression, in various types of cancer that include nasopharyngeal carcinoma, gastric cancer, ovarian carcinoma, breast cancer, glioma and oesophageal squamous cell carcinoma [130,131,132,133,134,135].