Pd02-06 serum testosterone and dihydrotestosterone and incidence and progression of lower urinary tract symptoms in reduction by dutasteride of prostate cancer events trial

You have accessJournal of UrologyCME1 Apr 2023PD02-06 SERUM TESTOSTERONE AND DIHYDROTESTOSTERONE AND INCIDENCE AND PROGRESSION OF LOWER URINARY TRACT SYMPTOMS IN REDUCTION BY DUTASTERIDE OF PROSTATE CANCER EVENTS TRIAL James Daniels, James Mirocha, Daniel Moreira, Gerald Andriole, and Stephen Freedland James DanielsJames Daniels More articles by this author , James MirochaJames Mirocha More articles by this author , Daniel MoreiraDaniel Moreira More articles by this author , Gerald AndrioleGerald Andriole More articles by this author , and Stephen FreedlandStephen Freedland More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003219.06AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Benign prostatic hyperplasia (BPH) is common in older men, with many developing lower urinary tract symptoms (LUTS) that impair quality of life. Though the pathogenesis of BPH is unclear, it was previously believed that increasing androgen levels had a role, though not all data support this idea. We tested if elevated serum testosterone and elevated serum DHT are risk factors for LUTS incidence in asymptomatic men and for LUTS progression in symptomatic men. METHODS: A post-hoc analysis of REDUCE was carried out in 3009 asymptomatic men with baseline International Prostate Symptom Score (IPSS) <8 and in 2145 symptomatic men with baseline IPSS≥8 not taking α-blockers or 5α-reductase inhibitor medications. The Reduction by Dutasteride of Prostate Cancer Events (REDUCE) trial was a randomized trial of dutasteride for prostate cancer prevention in men with an elevated PSA and negative pre-study biopsy. IPSS was measured every 6 months over the 4-year study. We estimated multivariable adjusted hazard ratios (adj-HRs) and 95% confidence intervals (CIs) using Cox models to test the association between quintiles of serum testosterone and quintiles of serum dihydrotestosterone (DHT) at baseline and LUTS incidence and progression. Among asymptomatic men, incident LUTS was defined as the first report of medical treatment, surgery or sustained clinically significant LUTS (i.e., 2 reports of IPSS>14). Among symptomatic men, LUTS progression was defined as an IPSS increase of ≥4 points from baseline, any surgical procedure for BPH, or the start of a new BPH medication. RESULTS: In asymptomatic men, relative to the lowest quantile, all quintiles of serum testosterone and all quintiles of DHT were unrelated to LUTS incidence (all p≥0.25). In symptomatic men, relative to the lowest quantile, all quintiles of serum testosterone and all quintiles of DHT were unrelated to LUTS progression (all p≥0.17). There was no significant interaction between treatment with dutasteride and serum testosterone or DHT when predicting LUTS; as such, data were not stratified by treatment assignment. CONCLUSIONS: In the REDUCE study, higher serum testosterone and higher serum DHT were not associated with either incident LUTS in asymptomatic men or progression of LUTS in symptomatic men. These data do not support the hypothesis that serum androgen levels in middle-aged men are associated with LUTS. Source of Funding: Dr. Daniels is funded by the NIH grants TL1 DK132768 and U2C DK129496 © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e71 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information James Daniels More articles by this author James Mirocha More articles by this author Daniel Moreira More articles by this author Gerald Andriole More articles by this author Stephen Freedland More articles by this author Expand All Advertisement PDF downloadLoading ...