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Chemoprevention of Prostate Cancer with the Polyamine Synthesis Inhibitor Difluoromethylornithine

  • Frank L. MeyskensJr.Email author
  • Anne R. Simoneau
  • Eugene W. Gerner
Chapter
Part of the Recent Results in Cancer Research book series (RECENTCANCER, volume 202)

Abstract

In vitro and in vivo preclinical results suggest that inhibition of polyamine synthesis inhibits the progression of prostate cancer. These findings has led to two clinical trials in patients at risk for invasive prostate cancer with difluoromethylornithine which specifically and irreversibly inhibits ornithine decarboxylase which catalyses the conversion of ornithine to putrescine the rate limiting step in polyamines synthesis. We have conducted a phase IIa one month and placebo randomized phase IIb 12 months trials in patients at increased risk for invasive prostate cancer. Favorable reduction in prostate polyamine levels and prostate volume was documented with no difference in clinical hearing changes. Patients with Gleason’s VI lesions in a surveillance cohort would be appropriate candidates for a definitive risk reduction trial although the unavailability of validated biomarkers for invasive progression would require a large and lengthy study.

Keywords

Prostate Cancer Prostate Volume Polyamine Level Polyamine Synthesis Prostate Needle Biopsy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Frank L. MeyskensJr.
    • 1
    • 2
    Email author
  • Anne R. Simoneau
    • 1
    • 3
  • Eugene W. Gerner
    • 4
  1. 1.Chao Family Comprehensive Cancer CenterUniversity of California IrvineIrvineUSA
  2. 2.Departments of Medicine, Biological Chemistry and Public HealthUniversity of California IrvineIrvineUSA
  3. 3.Departmentof UrologyUniversity of California IrvineIrvineUSA
  4. 4.BIO5 Institute and Arizona Cancer CenterUniversity of ArizonaTucsonUSA

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