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Poster Display session 2

1902 - Phase II trial of preoperative modified FOLFIRINOX (mFOLFIRINOX) followed by postoperative gemcitabine (GEM) in patients (pts) with borderline resectable (BR) and locally advanced (LA) pancreatic ductal adenocarcinoma (PDAC)

Date

29 Sep 2019

Session

Poster Display session 2

Topics

Tumour Site

Pancreatic Adenocarcinoma

Presenters

Jae Ho Jeong

Citation

Annals of Oncology (2019) 30 (suppl_5): v253-v324. 10.1093/annonc/mdz247

Authors

J.H. Jeong, C. Yoo, K. Kim, H. Chang, B. Ryoo

Author affiliations

  • Dept. Of Oncology, Asan Medical Center, University of Ulsan College of Medicine, 138-931 - Seoul/KR

Resources

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Abstract 1902

Background

mFOLFIRINOX and GEM are standard chemotherapy for pts with PDAC. This single-arm phase 2 trial assessed the efficacy and safety of perioperative chemotherapy consisted of preoperative mFOLFIRINOX and postoperative GEM in pts with BR/LA-PDAC.

Methods

Pts with histologically proven and radiologically confirmed BR/LA-PDAC as defined by NCCN criteria were eligible. Pts received 8 cycles of preoperative mFOLFIRINOX (oxaliplatin 85 mg/m2, irinotecan 180 mg/m2, 5-FU 2,400 mg/m2 over 46 hours, and leucovorin 400 mg/m2), every 2 weeks. For pts who underwent surgery, postoperative GEM (1,000 mg/m2 D1, 8, 15, every 4 weeks) was given for 6 cycles. Primary endpoint was 1-year progression-free survival (PFS) rate and secondary endpoints were PFS, overall survival (OS) and curative surgery rate. A total of 44 pts were required to show the improvement in 1-year PFS rates from 30% to 50% with a two-sided alpha of 0.05, beta of 0.8 and drop-out rates of 10%.

Results

Between May/2016 and Mar/2018, 44 patients were enrolled. Median age was 60 years (range, 35-76) and 26 pts (59%) were male. Pancreas head was most common site (n = 26, 59%), and 29 (66%) and 15 (34%) pts had BR- and LA-PDAC, respectively. With mFOLFIRINOX, response rate was 34% and surgery was done in 27 pts (61%); 22 and 5 pts achieved R0 and R1 resection, respectively, and postoperative GEM was given in 26 patients (96%). With median follow-up of 20.7 months (95% CI, 14.4-27.0), 1-year PFS rate was 52.0% (95% CI, 37.1-66.9), and 2-year OS rate was 49.8% (95% CI, 38.2-71.4). Median PFS and OS was 12.2 months (95% CI, 7.9-15.9), and 22.3 months (95% CI, 11.3-33.3), respectively. Median OS was significantly prolonged in pts who underwent surgery compared to those who did not (26.2 months [95% CI, 23.1-29.3] vs 9.0 months [95% CI, 6.6-11.4 months]; p < 0.001). For pts with surgery, R1 resection was significantly associated with poor postoperative OS compared to R0 resection (p = 0.04).

Conclusions

Perioperative chemotherapy using mFOLFIRINOX and GEM was feasible and effective for pts with BR/LA-PDAC.

Clinical trial identification

NCT02749136.

Editorial acknowledgement

Legal entity responsible for the study

The authors.

Funding

Boryung Pharmaceuticals.

Disclosure

All authors have declared no conflicts of interest.

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