There were articles that showed that CCNA2 is an important sign to judge the poor prognosis of the tumor, as it also highly expressed in pancreatic cancer, breast cancer, lung cancer, and other tumors (Gao et al., 2014; Peng et al., 2018; Brcic et al., 2019). This evidence concerns the gene CCNA2 and familial pancreatic carcinoma.