Adjuvant Gemcitabine and Cisplatin Followed by Chemoradiation for Resected Pancreatic Cancer

The study consists of three phases; Induction chemotherapy phase:Starting 4\~8 weeks after R0 resection of pancreatic cancer. Gemcitabine: 1200mg/㎡ (Day 1, 8), cisplatin 60mg/㎡ (Day 1) every 3 weeks for 2 cycles. Chemoradiotherapy phase: Starting 1-2 weeks after completion of induction chemotherapy (within 5 weeks after D1 of 2nd cycle of induction chemotherapy), no later than 16 weeks after operation. Gemcitabine 300mg/㎡ weekly for 5 weeks throughout RT period. Radiotherapy: 50.4Gy at 1.8Gy/Fx, for 28 Fx (Field reduction at 45Gy) for 5.5 pweeks. Maintenance chemotherapy phase: Within 4 weeks after completion of chemoradiotheray, no later than 6 weeks after completion of chemoradiotherapy Gemcitabine: 1200mg/㎡ (Day 1, 8) every 3 weeks, for 4 cycles