A randomized phase II trial of two different 4-drug combinations in advanced pancreatic adenocarcinoma: cisplatin, capecitabine, gemcitabine plus either epirubicin or docetaxel (PEXG or PDXG regimen)

Cancer Chemother Pharmacol. 2012 Jan;69(1):115-23. doi: 10.1007/s00280-011-1680-2. Epub 2011 May 28.

Abstract

Purpose: PEFG regimen (P:cisplatin, E:epirubicin, F:5-fluorouracil, G:gemcitabine) significantly prolonged progression-free (PFS) and overall survival (OS) of patients with advanced pancreatic adenocarcinoma (PA) with respect to standard gemcitabine. The current trial was aimed at assessing whether the replacement of E with docetaxel (D) may improve 6 months PFS (PFS6).

Methods: Chemo-naive patients with stage III or metastatic PA received P (30 mg/m(2) day 1 and 15), G (800 mg/m(2) day 1 and 15), and capecitabine (1,250 mg/m(2)/day days 1-28, without a break) and were randomized to receive either D at 25-30 mg/m(2) day 1 and 15 (arm A: PDXG regimen) or E at 30 mg/m(2) day 1 and 15 (arm B: PEXG regimen). Cycles were repeated every 28 days for a maximum of 6 months. The Fleming design was used to calculate the sample size on the probability of being PFS6. Assuming P0 = 40% and P1 = 60%, α = 0.05 and β = 0.10; the study was to enroll 52 patients per arm.

Results: Between July 2005 and September 2008, 105 patients were enrolled, stratified by stage and randomized. Patients' characteristics were (A/B) the following: median age 61/59, PS >70 92/88%, metastatic disease 66/65%. PFS6 was 58%, and median OS was 11 months in both arms. A partial response was observed in 60/37% of patients. Main per cycle G3-4 toxicity was the following: neutropenia 4/13%, thrombocytopenia 2/4%, anemia 4/4%, and fatigue 6/3%.

Conclusions: The inclusion of D instead of E yielded more objective response and less G3-4 neutropenia but did not improve PFS and OS. The present trial confirms the relevant impact on outcome of advanced PA of 4-drug regimens.

Publication types

  • Clinical Trial, Phase II
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenocarcinoma / drug therapy*
  • Adenocarcinoma / pathology
  • Adult
  • Aged
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Capecitabine
  • Cisplatin / administration & dosage
  • Deoxycytidine / administration & dosage
  • Deoxycytidine / analogs & derivatives
  • Disease-Free Survival
  • Docetaxel
  • Epirubicin / administration & dosage
  • Female
  • Fluorouracil / administration & dosage
  • Fluorouracil / analogs & derivatives
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Neoplasm Metastasis
  • Neoplasm Staging
  • Neutropenia / chemically induced*
  • Pancreatic Neoplasms / drug therapy*
  • Pancreatic Neoplasms / pathology
  • Survival Rate
  • Taxoids / administration & dosage
  • Treatment Outcome

Substances

  • Taxoids
  • Deoxycytidine
  • Docetaxel
  • Epirubicin
  • Capecitabine
  • gemcitabine
  • Cisplatin
  • Fluorouracil