Comparative Study of Use of Alpha-Blockers to Treat Symptoms in Prostate Cancer Patients Undergoing Radiation Therapy

Summary

Approximately 50%-95% of prostate cancer patients undergoing radiation therapy (RT) develop symptomatic urinary problems .These symptoms can significantly diminish a patient's quality of life during and shortly after therapy. Alpha1-blockers, such as Rapaflo, act to decrease resistance to urinary flow. This multi-institutional phase III trial is designed to compare standard of care versus preventive treatment with Rapaflo for prostate cancer patients, regardless of risk group, whose treatment consists of radical radiation therapy. We plan to recruit 188 patients across Quebec who will be randomized into two arms: rapaflo prescribed at start of radiation therapy or if/when symptoms appear.

Timeline

Start

2016-06

Primary completion

2023-04

Completion

2023-08

Publications

• Results Pollack A, Zagars GK, Starkschall G, Childress CH, Kopplin S, Boyer AL, Rosen II. Conventional vs. conformal radiotherapy for prostate cancer: preliminary results of dosimetry and acute toxicity. Int J Radiat Oncol Biol Phys. 1996 Feb 1;34(3):555-64. doi: 10.1016/0360-3016(95)02103-5.
• Results Tsumura H, Satoh T, Ishiyama H, Tabata K, Kotani S, Minamida S, Kimura M, Fujita T, Matsumoto K, Kitano M, Hayakawa K, Baba S. Comparison of prophylactic naftopidil, tamsulosin, and silodosin for 125I brachytherapy-induced lower urinary tract symptoms in patients with prostate cancer: randomized controlled trial. Int J Radiat Oncol Biol Phys. 2011 Nov 15;81(4):e385-92. doi: 10.1016/j.ijrobp.2011.04.026. Epub 2011 Jun 12.

Drugs

Indications