title: Testosterone Therapy in Patients with Treated and Untreated Prostate Cancer: Impact on Oncologic Outcomes.
abstract: OBJECTIVE
  Testosterone deficiency and prostate cancer have an increasing prevalence with age. However, because of the relationship between prostate cancer and androgen receptor activation, testosterone therapy among patients with known prostate cancer has been approached with caution.
  
  
  METHODS
  We identified a cohort of 82 hypogonadal men with prostate cancer who were treated with testosterone therapy. They included 50 men treated with radiation therapy, 22 treated with radical prostatectomy, 8 on active surveillance, 1 treated with cryotherapy and 1 who underwent high intensity focused ultrasound. We monitored prostate specific antigen, testosterone, hemoglobin, biochemical recurrence and prostate specific antigen velocity.
  
  
  RESULTS
  Median patient age was 75.5 years and median followup was 41 months. We found an increase in testosterone (p <0.001) and prostate specific antigen (p = 0.001) in the entire cohort. Prostate specific antigen increased in patients on active surveillance. However, no patients were upgraded to higher Gleason score on subsequent biopsies and none have yet gone on to definitive treatment. We did not note any biochemical recurrence among patients treated with radical prostatectomy but 3 (6%) treated with radiation therapy experienced biochemical recurrence. It is unclear whether these cases were related to testosterone therapy or reflected the natural biology of the disease. We calculated mean prostate specific antigen velocity as 0.001, 0.12 and 1.1 μg/l per year in the radical prostatectomy, radiation therapy and active surveillance groups, respectively.
  
  
  CONCLUSIONS
  In the absence of randomized, placebo controlled trials our study supports the hypothesis that testosterone therapy may be oncologically safe in hypogonadal men after definitive treatment or in those on active surveillance for prostate cancer.
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia; Department of Urology, Dalhousie University, Halifax, Nova Scotia, Canada. Electronic address: jesse.ory@dal.ca.
authors.forename: Jesse
authors.initials: J
authors.lastname: Ory
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia.
authors.forename: Ryan
authors.initials: R
authors.lastname: Flannigan
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia.
authors.forename: Colin
authors.initials: C
authors.lastname: Lundeen
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia; Western Hospital, University of Melbourne and Monash Medical Centre, Monash University, Melbourne, Victoria, Australia.
authors.forename: James G
authors.initials: JG
authors.lastname: Huang
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia.
authors.forename: Peter
authors.initials: P
authors.lastname: Pommerville
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, British Columbia.
authors.forename: S Larry
authors.initials: SL
authors.lastname: Goldenberg
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000728:Androgens / Q000627:therapeutic use; D001706:Biopsy; D003131:Combined Modality Therapy; D020249:Hormone Replacement Therapy / Q000379:methods*; D006801:Humans; D008297:Male; D060787:Neoplasm Grading; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000097:blood / Q000175:diagnosis / Q000628:therapy*; D012189:Retrospective Studies; D013739:Testosterone / Q000627:therapeutic use*
chemical_list: D000728:Androgens; D013739:Testosterone; D017430:Prostate-Specific Antigen
keywords: neoplasm recurrence, local; prostate-specific antigen; prostatic neoplasms; risk assessment; testosterone