Comparison of Solifenacin and Mirabegron in Treatment of Overactive Bladder Symptoms in Men After TURP

Summary

Urinary frequency urgency and urgency urinary incontinence (UUI) are commonly encountered in patients after transurethral prostatectomy (TURP) or transurethral incision of the prostate (TUIP). Antimuscarinics has been widely used to treat OAB and around 70% of patients can improve symptoms after treatment. Beta-3 adrenoceptor agonist (mirabegron) can also decrease DO and improve OAB symptoms. Combination treatment of solifenacin 5mg plus mirabegron 25 or 50mg was more effective than mirabegron 50mg alone, but with more anticholinergic side effects. However, there has been no clinical trial to compare which drug provides more benefit to decrease the OAB symptom severity immediately after TURP. This study tries to compare the safety and therapeutic efficacy between solifenacin and mirabegron in men with BPH and having OAB symptoms immediately after TURP. This study was designed as a prospective, randomized trial to compare the safety and efficacy of OAB medication on the decrease of overactive bladder symptoms score (OABSS) and urgency severity score (USS) between solifenacin 5mg QD and mirabegron 50mg QD in men with BPH undergoing TURP. A total of 130 male patients with BPH and undergo TURP or TUIP will be enrolled. The primary end point is the change of USS from baseline to 4 weeks after catheter removal and starting OAB medication. Secondary end-points include the changes of OABSS, frequency episodes, urgency episodes, UUI episodes in the 3-day voiding diary, maximum flow rate (Qmax), voided volume and PVR, International Prostate Symptom Score (IPSS) and quality of life index (QoL-I) from baseline to 2 weeks and 4 weeks. We expect that patients receiving solifenacin and mirabegron might have similar therapeutic effects on decrease of USS, but patients who received mirabegron might have less adverse events such as dry mouth or difficulty in urination.

Timeline

Start

2018-08-01

Primary completion

2019-07-31

Completion

2019-07-31

Publications

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• Background Yamada S, Ito Y, Nishijima S, Kadekawa K, Sugaya K. Basic and clinical aspects of antimuscarinic agents used to treat overactive bladder. Pharmacol Ther. 2018 Sep;189:130-148. doi: 10.1016/j.pharmthera.2018.04.010. Epub 2018 Apr 27.
• Background Kelleher C, Hakimi Z, Zur R, Siddiqui E, Maman K, Aballea S, Nazir J, Chapple C. Efficacy and Tolerability of Mirabegron Compared with Antimuscarinic Monotherapy or Combination Therapies for Overactive Bladder: A Systematic Review and Network Meta-analysis. Eur Urol. 2018 Sep;74(3):324-333. doi: 10.1016/j.eururo.2018.03.020. Epub 2018 Apr 23.
• Background Wada N, Iuchi H, Kita M, Hashizume K, Matsumoto S, Kakizaki H. Urodynamic Efficacy and Safety of Mirabegron Add-on Treatment with Tamsulosin for Japanese Male Patients with Overactive Bladder. Low Urin Tract Symptoms. 2016 Sep;8(3):171-6. doi: 10.1111/luts.12091. Epub 2015 Feb 17.
• Background Nitti VW, Rosenberg S, Mitcheson DH, He W, Fakhoury A, Martin NE. Urodynamics and safety of the beta(3)-adrenoceptor agonist mirabegron in males with lower urinary tract symptoms and bladder outlet obstruction. J Urol. 2013 Oct;190(4):1320-7. doi: 10.1016/j.juro.2013.05.062. Epub 2013 May 30.
• Stoniute A, Madhuvrata P, Still M, Barron-Millar E, Nabi G, Omar MI. Oral anticholinergic drugs versus placebo or no treatment for managing overactive bladder syndrome in adults. Cochrane Database Syst Rev. 2023 May 9;5(5):CD003781. doi: 10.1002/14651858.CD003781.pub3.

Drugs

Indications