The 61-year-old male patient was diagnosed with a pancreatic malignancy in our hospital in January 2018... Immune results were PD-L1(-), TMB-H, MMR (p-MMR), MSI (microsatellite stable)...Postoperative paclitaxel plus gemcitabine were selected as the adjuvant chemotherapy regimen. Four courses of chemotherapy were performed from 30 January 2018 to 1 March 2018. Unfortunately, the patient developed disease progression in June 2018...