Clinical Phase II Clinical Study Evaluating the Toxicity and Efficacy of mFOLFIRINOX Associated With SBRT (Stereotactic Radiotherapy) in Patients With Unresectable Locally Advanced Pancreatic Cancer

STUDY PLAN Patients will receive initial mFOLFIRINOX (6 cycles) chemotherapy, followed by evaluation of the response to the treatment (imaging and laboratory testing) followed by SBRT, followed by mFOLFIRINOX chemotherapy. In case of exclusion of disease progression after 10 weeks +/- 2 weeks after completion of SBRT, patients will be qualified to surgical treatment to attempt a radical surgical treatment.