Efficacy and Safety Evaluating Study to Compare Uritos® (Imidafenacin) and Urotol® (Tolterodine) for Treatment of Overactive Bladder.

Phase 3

Completed

• Conditions: Overactive Bladder
• Interventions: Drug: Uritos®; Drug: Urotol®

• Registration Number: NCT03575702
• Lead Sponsor: R-Pharm

Brief Summary

Objective of this study was confirmation on non-inferiority and validation of similar safety profile of new anti-muscarinic medicinal product Uritos® (Imidafenacin) in comparison with other product from m-cholinergic antagonists group Urotol® (Tolterodine).

Detailed Description

To assess clinical efficiency and safety of Uritos® (Imidafenacin) in comparison to Urotol® (Tolterodine) according to its influence on urination frequency and number of urinary incontinence episodes a total of 327 patients underwent screening and 300 patients were randomized (150 patients in the Uritos® group and 150 patients in the Urotol® group). Screening period was not exceeding 2 weeks (14 days). Therapy was performed during 12 weeks (84 days). Every patient received only one treatment (Uritos® or Urotol®) during the treatment period. Patients were returning to the trial site to assessment visits on Weeks 2, 4, 8 and 12 with permissible variation ± 3 days. Observation period after the end of treatment - 30 ± 5 days (could be performed through telephone connection without need for physician appointment by patient). Maximum observation period: 136 days.

Efficacy and safety parameters were assessed as per primary and secondary endpoints.

The results of this study could potentially provide new optimum approaches to OAB treatment.

Study Timeline

• Study Start: 2016-07-18
• Primary Completion: 2017-08-01
• Study Completion: 2017-09-01
• Study First Submitted: 2018-06-21
• Study First Submitted QC: 2018-06-29
• Study First Posted: 2018-07-02
• Results First Submitted: 2018-08-20
• Status Verified: 2019-05
• Results First Submitted QC: 2019-05-20
• Last Update Submitted: 2019-05-20
• Results First Posted: 2019-05-21
• Last Update Posted: 2019-05-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

1. Signed dated informed consent.

2. Confirmed overactive bladder (OAB). The OAB diagnosis was made based on characteristic symptoms of the patient:

   1. urinary incontinence - 5 or more episodes a week;
   2. frequent urination - 8 or more times a day;
   3. imperative urination urge - 1 or more episodes a day.

3. The duration of the presence of OAB symptoms is 3 months or more (the assessment is based on patient's history and medical records).

4. Overactive bladder Awareness Tool Questionnaire (OAB Awareness Tool) score 8 and more at the screening visit and randomization visit.

5. Negative result of the urine pregnancy test at the screening and the randomization visit before receiving the first dose of the study drug in women of childbearing potential.

6. Female patients of childbearing potential and male patients and their female partners should use at least two birth control methods, one of those is barrier, during the entire study period and for at least 35 days following administration of the last dose of the study product. Acceptable methods of contraception:

   • oral, transdermal, implantation or injection hormone therapy;
   • effective intrauterine devices;
   • double barrier contraceptive methods.

7. Willingness and ability to follow the study visits schedule, treatment plan, laboratory tests and other study procedures.

Exclusion Criteria

1. A history of hypersensitivity or suspected hypersensitivity to tolterodine or imidafenacin.
2. Structural abnormalities of the bladder, including bladder cancer, bladder stones, interstitial cystitis.
3. The volume of residual urine is 100 ml or more with bladder ultrasound.
4. Documented diagnosis of stress urinary incontinence.
5. Operative interventions on the bladder or urethra within the previous 6 months or indications for surgical treatment for OAB.
6. Exacerbation of gynecological diseases including endometriosis, uterine leiomyoma exceeding 3 cm in diameter.
7. Prostate cancer.
8. Prostate diseases with clinically significant urodynamics abnormality (benign prostatic hyperplasia, acute and chronic prostatitis, prostatic calculus).
9. Renal and urinary inflammatory disorders (pyelonephritis, bacterial cystitis, urethritis).
10. For male, the prostatic specific antigen (PSA) level above 4 ng/mL.
11. Severe liver impairment alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) level 3 and more times exceeding the upper limit of normal and/or total bilirubin level 1.5 times exceeding the upper limit of normal.
12. Moderate or severe renal impairment based on the medical records and/or glomerular filtration rate < 50 mL/min determined by Cockroft-Gault formula and/or blood creatinine level > 133 μmol/L at screening.
13. A positive test result for hepatitis B, hepatitis C and human immunodeficiency virus (HIV).
14. Patients suffering from a neoplastic condition without remission at least within 5 years from the start of administration of the study product.
15. Vascular dementia, dementia in Alzheimer's disease, dementia in other diseases, including organic amnestic syndrome.
16. Parkinson's disease or secondary parkinsonism.
17. Nonspecific ulcerative colitis, including severe ulcerative colitis.
18. Thyroid disorders with hyperthyroidism signs.
19. Chronic heart insufficiency Stage III-IV by New York Heart Association Chronic heart insufficiency classification (NYHA).
20. Hypotension: systolic blood pressure (SBP) < 90 mm Hg and/or diastolic blood pressure (DBP) < 60 mm Hg.
21. Uncontrolled medically induced hypertension.
22. Hemodynamically and/or clinically significant heart arrhythmias.
23. QTc prolongation up to 450 ms and more in men and 470 ms and more in women.
24. Open-angle glaucoma.
25. Myasthenia gravis.
26. Megacolon, paralytic ileus, pyloric part of the stomach/duodenal occlusion and any other conditions associated with clinically significant gastric/intestinal obstruction or depressed motility.
27. Necessity of intake and/or intake of prohibited products listed in the Section "Acceptable and prohibited recent and concomitant therapy" within 7 days before the start of therapy.
28. Drug abuse, chronic alcoholism, any psychotic disorders.
29. Participation in other studies within 3 months prior to the beginning of the current study and/or during participation in this study.
30. Pregnancy and/or breastfeeding.
31. Female patients of childbearing potential, having an unprotected sexual contact with a male person non-sterilized by vasectomy during at least 6 months, within 14 days before administration of the study product.
32. Inability to follow protocol procedures.
33. Any other acute or exacerbation and/or decompensation of chronic diseases at inclusion in the study.
34. Patient's behavior, any safety reasons, clinical and administrative reasons, which, according to Investigator's opinion, may potentially affect the study drug safety/efficiency assessment.
35. Other medical and psychiatric conditions or deviations of laboratory parameter which may increase patient risk associated with participation in the study or administration of the study product, or which can influence the interpretation of the study results and, according to Investigator's opinion, make a person ineligible for participation in this study.
36. Patients who are employees of the study site or patients who are employees of the Sponsor/Contract Research Organization (CRO), directly involved in this clinical trial.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Uritos®	Uritos®	one tablet orally twice a day (after breakfast and dinner) for 12 weeks
Urotol®	Urotol®	one tablet orally twice a day (after breakfast and dinner) for 12 weeks

Primary Outcome Measures

Name	Time	Method
Change in the Mean Daily Number of Urination Episodes at Week 12	Baseline and Week 12	The mean daily number of urination episodes was calculated as the total number of episodes (on the basis of the data that patients entered into their diaries) per day (from 7 am to 7 am the next day) for the study period (between visits) divided by the number of days in the period.

Secondary Outcome Measures

Name	Time	Method
Change in the Mean Weekly Number of Incontinence Episodes at Week 12	Baseline and Week 12	The mean weekly number of incontinence episodes was calculated as the total number of episodes per day (from 7 am to 7 am the next day) for the study period (between visits) divided by the number of weeks in the period.
Changes in the Overactive Bladder Symptom Score According to Overactive Bladder (OAB) Awareness Tool Questionnaire at 2, 4, 8 and 12 Week	Baseline and Week 2, 4, 8 and 12	Overactive bladder (OAB) Awareness Tool Questionnaire (version OAB-V8, containing 8 questions) is a validated questionnaire. Patient is asked to answer 8 questions concerning typical symptoms of OAB giving answers with a scale with minimum - 0 score defined as "no bothering at all" and maximmum - 5 score defined as "a very big deal" to assess the severity of these symptoms. All answers are simply summed to make a combined final score. Male participants should add 2 points to their final score. The final scores range from 0 to 40 (for women) and 42 (for men). The score equal to 8 and more is interpreted as high probability of OAB presence, with the higher scores indicating more bothersome symptoms of OAB.
Change in the Mean Daytime Number of Incontinence Episodes at Week 12	Baseline and Week 12	The mean daytime number of incontinence episodes was calculated as the total number of episodes from 7 am to 11 pm for the study period (between visits) divided by the number of days in the period.
Change in the Mean Nighttime Number of Incontinence Episodes at Week 12	Baseline and Week 12	The mean nighttime number of incontinence episodes was calculated as the total number of episodes from 11 pm to 7 am for the study period (between visits) divided by the number of days in the period.
Change in the Mean Number of Incontinence Episodes at Week 2, 4 and 8	Baseline and Week 2, 4 and 8	Separately for daily, daytime and nighttime measurements.
Change in the Mean Daily Number of Incontinence Episodes at Week 12	Baseline and Week 12	The mean daily number of incontinence episodes was calculated as the total number of episodes (on the basis of the data that patients entered into their diaries) per day (from 7 am to 7 am the next day) for the study period (between visits) divided by the number of days in the period.
Change in the EQ-5D-based Quality of Life at Week 12	Baseline and Week 12	The Euro Quality of Life five Dimensions questionnaire ( EQ-5D, version EQ-5D-5L) is a validated questionnaire for the assessment of health-related quality of life. It consists of a questionnaire and a visual analogue scale (EQ-VAS). The self-assessment questionnaire is self-reported description of the subject's current health in 5 dimensions i.e., mobility, self-care, usual activities, pain/discomfort and anxiety/depression. The subject is asked to assess their own current level of function in each dimension by 5-level scale from "no problems" to "significant problem" grades. The EQ-VAS is a self-rated health status using a VAS in mm from 0 (the worse health status) to 100 (the best health status). The EQ-VAS records the subject's perceptions of their own current overall health quantitatively in mm and can be used to monitor changes with time. The results of patients assessment by VAS are presented.
Change in the Mean Daily Number of Urination Episodes at Week 2, 4 and 8 Visit as Compared to the Treatment Initiation Visit	Baseline and Week 2, 4 and 8	The mean daily number of incontinence episodes was calculated as the total number of episodes (on the basis of the data that patients entered into their diaries) per day (from 7 am to 7 am the next day) for the study period (between visits) divided by the number of days in the period.

Trial Locations

Locations (11)

Family polyclinic №4, LLC; 🇷🇺 Korolev, Russian Federation

A.I. Evdokimov Moscow State University of Medicine and Dentistry, Municipal Clinical Hospital named after Spasokukotskiy S.I; 🇷🇺 Moscow, Russian Federation

N.I. Pirogov Russian National Research University; 🇷🇺 Moscow, Russian Federation

National Medical Radiological Center; 🇷🇺 Moscow, Russian Federation

National N.I. Pirogov Medical and Surgical Center; 🇷🇺 Moscow, Russian Federation

Rostov State Medical University; 🇷🇺 Rostov-on-Don, Russian Federation

All-Russian A.M. Nikiforov Center for Emergency and Radiation Medicine; 🇷🇺 Saint Petersburg, Russian Federation

Baltic Medicine LLC; 🇷🇺 Saint Petersburg, Russian Federation

I.P. Pavlov First St. Petersburg State Medical University; 🇷🇺 Saint Petersburg, Russian Federation

OrKli Hospital, LLC; 🇷🇺 Saint Petersburg, Russian Federation

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