Medical Oncology

, Volume 28, Supplement 1, pp 39–47 | Cite as

Phase III double-blind, placebo-controlled, prospective randomized trial of adjuvant tamoxifen vs. tamoxifen and fenretinide in postmenopausal women with positive receptors (EB193): an intergroup trial coordinated by the Eastern Cooperative Oncology Group

  • Ruta D. Rao
  • Melody A. Cobleigh
  • Robert Gray
  • Mark L. GrahamII
  • Larry Norton
  • Silvana Martino
  • George Thomas Budd
  • James N. Ingle
  • William C. Wood
Original Paper

Abstract

Fenretinide and tamoxifen have additive antitumor effects preclinically. We performed a randomized, placebo-controlled, double-blind adjuvant trial in breast cancer patients treated for 5 years with tamoxifen, with or without fenretinide. Between October 1995 and October 1999, 426 postmenopausal women with hormone receptor-positive breast cancer were randomized. Patients were monitored for efficacy and toxicity. Four hundred and nineteen patients were evaluable. The study was terminated early due to slow accrual. There were no significant differences between treatment groups in DFS, TTR or survival. More patients stopped treatment early on the fenretinide arm than on placebo (P = 0.02). Grade 3/4 toxicities, including visual problems and musculoskeletal complaints were more common in patients receiving fenretinide (P = 0.007). A Night Blindness Questionnaire was used to monitor nyctalopia, which was slightly, but not significantly, more common on fenretinide. In this underpowered study, no significant difference was observed in efficacy between treatment groups. This trial provides important toxicity information about fenretinide, a retinoid that has been used in the prevention setting, because it is the only placebo-controlled, double-blind randomized study ever performed.

Keywords

Tamoxifen Fenretinide Postmenopausal Retinoid Retinamides Adenocarcinoma of the breast Nyctalopia Estrogen and progesterone positive 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Ruta D. Rao
    • 1
  • Melody A. Cobleigh
    • 1
  • Robert Gray
    • 2
  • Mark L. GrahamII
    • 3
  • Larry Norton
    • 4
  • Silvana Martino
    • 5
  • George Thomas Budd
    • 6
  • James N. Ingle
    • 7
  • William C. Wood
    • 8
  1. 1.Rush University Medical CenterChicagoUSA
  2. 2.Dana Farber Cancer InstituteBostonUSA
  3. 3.Waverly Heme OncCaryUSA
  4. 4.Memorial Sloan-Kettering Cancer CenterNew YorkUSA
  5. 5.The Angeles Clinic and Research InstituteSanta MonicaUSA
  6. 6.Cleveland Clinic FoundationClevelandUSA
  7. 7.Mayo ClinicRochesterUSA
  8. 8.Emory UniversityAtlantaUSA

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