Survival Outcomes Associated with Clinical and Pathological Response Following Neoadjuvant FOLFIRINOX or Gemcitabine/Nab-Paclitaxel Chemotherapy in Resected Pancreatic Cancer

  • Francis I. Macedo
  • , Emily Ryon
  • , Shishir K. Maithel
  • , Rachel M. Lee
  • , David A. Kooby
  • , Ryan C. Fields
  • , William G. Hawkins
  • , Greg Williams
  • , Ugwuji Maduekwe
  • , Hong J. Kim
  • , Syed A. Ahmad
  • , Sameer H. Patel
  • , Daniel E. Abbott
  • , Patrick Schwartz
  • , Sharon M. Weber
  • , Charles R. Scoggins
  • , Robert C.G. Martin
  • , Vikas Dudeja
  • , Dido Franceschi
  • , Alan S. Livingstone
  • Nipun B. Merchant

Research output: Contribution to journalArticlepeer-review

152 Scopus citations

Abstract

Objective:To compare the survival outcomes associated with clinical and pathological response in pancreatic ductal adenocarcinoma (PDAC) patients receiving neoadjuvant chemotherapy (NAC) with FOLFIRINOX (FLX) or gemcitabine/nab-paclitaxel (GNP) followed by curative-intent pancreatectomy.Background:Newer multiagent NAC regimens have resulted in improved clinical and pathological responses in PDAC; however, the effects of these responses on survival outcomes remain unknown.Methods:Clinicopathological and survival data of PDAC patients treated at 7 academic medical centers were analyzed. Primary outcomes were overall survival (OS), local recurrence-free survival (L-RFS), and metastasis-free survival (MFS) associated with biochemical (CA 19-9 decrease ≥50% vs <50%) and pathological response (complete, pCR; partial, pPR or limited, pLR) following NAC.Results:Of 274 included patients, 46.4% were borderline resectable, 25.5% locally advanced, and 83.2% had pancreatic head/neck tumors. Vein resection was performed in 34.7% and 30-day mortality was 2.2%. R0 and pCR rates were 82.5% and 6%, respectively. Median, 3-year, and 5-year OS were 32 months, 46.3%, and 30.3%, respectively. OS, L-RFS, and MFS were superior in patients with marked biochemical response (CA 19-9 decrease ≥50% vs <50%; OS: 42.3 vs 24.3 months, P < 0.001; L-RFS-27.3 vs 14.1 months, P = 0.042; MFS-29.3 vs 13 months, P = 0.047) and pathological response [pCR vs pPR vs pLR: OS-not reached (NR) vs 40.3 vs 26.1 months, P < 0.001; L-RFS-NR vs 24.5 vs 21.4 months, P = 0.044; MFS-NR vs 23.7 vs 20.2 months, P = 0.017]. There was no difference in L-RFS, MFS, or OS between patients who received FLX or GNP.Conclusion:This large, multicenter study shows that improved biochemical, pathological, and clinical responses associated with NAC FLX or GNP result in improved OS, L-RFS, and MFS in PDAC. NAC with FLX or GNP has similar survival outcomes.

Original languageEnglish
Pages (from-to)400-413
Number of pages14
JournalAnnals of surgery
Volume270
Issue number3
DOIs
StatePublished - Sep 1 2019

Keywords

  • FOLFIRINOX
  • gemcitabine/nabpaclitaxel
  • neoadjuvant chemotherapy
  • outcomes
  • pancreatic cancer
  • survival

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