PRIMARY OBJECTIVES:~To evaluate the therapeutic efficacy of second-line adjuvant therapy with nab-paclitaxel plus gemcitabine (AG) versus oxaliplatin plus folinic acid and fluorouracil (OFF) in terms of overall survival for gemcitabine-refractory pancreatic cancer after curative resection.~SECONDARY OBJECTIVES:~To evaluate the therapeutic efficacy of two regimens in terms of objective response rate according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1~To evaluate the time to remission of patients treated with the two regimens.~To evaluate the progression-free survival of patients treated with the two regimens.~To evaluate the levels of tumor biomarkers in serum of patients treated with the two regimens, including Carbohydrate Antigen (CA)19-9、CA125、CA153、CA242、CA72-4、CA50、CEA、AFP.~To evaluate the occurrence of grade 3 and 4 toxicities according to National Cancer Institute Common Toxicity Criteria for Adverse Effects (NCI CTCAE) version 4.0 in patients treated with the two regimens.~To evaluate the quality of life score of patients treated with the two regimens.~Detailed Description of Arms:~Patients are randomized to 1 of 2 treatment arms (Arm AG or Arm OFF). Arm AG: Firstly, patients receive nab-paclitaxel 100 mg/m^2 (iv, 30 minutes) on days 1, 8, and 15 for 3 weeks, followed by one week without treatment. Secondly, patients receive gemcitabine 1000 mg/m^2 (iv, 30 minutes) on days 1, 8, and 15 for 3 weeks, followed by one week without treatment. Treatment repeats until there is disease progression or recurrence.~Arm OFF: Patients receive oxaliplatin 85 mg/m^2 (iv, 2 hours) on days 8 and 22 with 42 days as a cycle. Patients receive folinic acid 200 mg/m^2 (iv) and fluorouracil 2000 mg/m^2 (iv, 24 hours) on days 1, 8, 15 and 22 for 4 weeks, followed by 2 weeks without treatment. Oxaliplatin is given before folinic acid and fluorouracil when the three drugs are given on the same days. Treatment repeats until there is disease progression or recurrence.
The purpose of this study is to investigate the activity and safety of second-line adjuvant therapy with nab-paclitaxel plus gemcitabine (AG) versus oxaliplatin plus folinic acid and fluorouracil (OFF) for gemcitabine-refractory pancreatic cancer after curative resection.