Pancreatic Cancer Stage III

Aberrant miRNA production has been linked to a wide range of human cancers and shown to play important roles in their genesis and growth. These miRNA can be detected in the blood and tumors of patients with cancer. The investigators hypothesize that the detection of certain miRNAs present in the blood/serum of patients with pancreatic cancer may be important to the early diagnosis of the disease. Furthermore, the investigators hypothesize that miRNA detection in PC patients will yield prognostic information and help predict the response to treatment.

This study aims to prospective validate an exosome-based miRNA signature for noninvasive and early detection of pancreatic ductal adenocarcinoma.

The purpose of this research is to investigate the activity and safety of the combination of gemcitabine plus nab-paclitaxel and sintilimab as neoadjuvant therapy in treating patients with resectable and borderline resectable pancreatic cancer. The drugs involved in this study are: * Sintilimab * Nab-paclitaxel * Gemcitabine