e14614 Background: Conroy et al reported a significant improvement in overall survival of patients with metastatic pancreatic cancer treated with FOLFIRINOX compared to single agent gemcitabine. The regimen was associated with significant grade 3/ 4 toxicities, such as myelosuppression(46%), fatigue(24%), vomiting(15%) and diarrhea (13%). In order to improve the toxicity profile, we have modified FOLFIRINOX (mFOLFIRINOX) regimen by removing the bolus 5-FU and adding the routine use of growth factor prophylaxis. We present our experience with mFOLFIRINOX in patients with locally advanced or metastatic pancreatic cancer. Methods: After obtaining IRB approval, patients with a diagnosis of pancreatic cancer were identified from the Emory University tumor registry. Twenty eight patients who received at least one dose of mFOLFIRINOX (5-FU 2400 mg/m2 CIVI over 46 hours, leucovorin 400 mg/m2, oxaliplatin 85 mg/m2, irinotecan 180 mg/m2 and pegfilgrastim 6 mg every two weeks ) were selected and their charts were retrospectively reviewed for safety, response, and survival. Results: Of 28 patients, 14 (50%) were male, 18 (64%) white, 8 (29%) black and other 2(7%). Median age was 63 (50-75) and ECOG performance status 0-1. Nineteen (68%) patients had primary tumor located in head of pancreas. Eight patients (29%) experienced grade 3/4 toxicities, i.e., nausea/vomiting (11%), diarrhea (11%), fatigue (11%), neuropathy (4%), neutropenia (4%), thrombocytopenia(4%), and sepsis not-related to neutropenia (4%). No grade 3/4 anemia or febrile neutropenia was noted. mFOLFIRINOX controlled the disease in 20 patients (71%) with 2 CR, 4 PR and 14 SD. With a median follow up of 5.5 months, median overall or progression free survival is not reached. Two patients have died and six patients have progressed. Conclusions: Modified FOLFIRINOX is well tolerated in this US population. The clinical activity appears very promising with majority of patients being free of progression.