A phase II study of isoflavones, erlotinib, and gemcitabine in advanced pancreatic cancer.

Journal Article (Journal Article)

BACKGROUND: The EGFR/Akt/NF-κB signalling pathway is frequently deregulated in pancreatic cancer and contributes to cell growth, metastasis and chemoresistance. An isoflavone, genistein, inactivates Akt and NF-κB and enhances the anti-tumor activity of erlotinib and gemcitabine in experimental systems of pancreas cancer. This phase II study was undertaken to determine the effects of adding isoflavone to a regimen of gemcitabine and erlotinib on survival in patients with advanced pancreatic cancer. METHODS: Eligibility included previously untreated patients with advanced pancreatic adenocarcinoma. Patients received gemcitabine 1,000 mg/m² on days 1, 8, and 15, and erlotinib 150 mg once daily P.O. on day 1 to day 28. Soy isoflavones (Novasoy®) were administered at a dose of 531 mg twice daily P.O. starting day -7 until the end of study participation. RESULTS: Twenty patients with advanced pancreas cancer were enrolled (median age 57.9 years). Sixteen patients had stage IV disease. The median number of cycles was 2 per patient. The median survival time was 5.2 months (95% CI, 4.6-N/A months). The probability of survival at 6 months was 50% (95% CI, 32-78%). CONCLUSIONS: The addition of soy isoflavones to gemcitabine and erlotinib did not appear to increase the survival of patients with advanced pancreatic cancer.

Full Text

Duke Authors

Cited Authors

  • El-Rayes, BF; Philip, PA; Sarkar, FH; Shields, AF; Ferris, AM; Hess, K; Kaseb, AO; Javle, MM; Varadhachary, GR; Wolff, RA; Abbruzzese, JL

Published Date

  • August 2011

Published In

Volume / Issue

  • 29 / 4

Start / End Page

  • 694 - 699

PubMed ID

  • 20107864

Electronic International Standard Serial Number (EISSN)

  • 1573-0646

Digital Object Identifier (DOI)

  • 10.1007/s10637-010-9386-6


  • eng

Conference Location

  • United States