MUC5AC and pancreatic neoplasm: The result of trim and filling method supplemented 9 additional studies to control publication bias, showed that the expression level of mucin family was still related to the prognosis of patients with pancreatic cancer (HR = 1.24,95%CI 1.01–1.52), which further proved that the impact of publication bias on this study was not significant, and the results of our study had high credibility.