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A Study of the Efficacy and Safety of MK-4618 in Patients with Overactive Bladder (OAB)

A 52-week Extension to: A Phase IIb Randomized, Placebo- and Active Comparator (Tolterodine)-Controlled, 2-Part Clinical Study of the Efficacy and Safety of MK-4618 in Patients with Overactive Bladder - PhIIb Dose Ranging Study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2010-022121-15-SE
Enrollment
1295
Registered
2011-02-18
Start date
2011-04-12
Completion date
Unknown
Last updated
2015-07-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Overactive Bladder MedDRA version: 16.0 Level: LLT Classification code 10059617 Term: Overactive bladder System Organ Class: 100000004857

Interventions

Product Name: MK-4618 Product Code: MK-4618 Pharmaceutical Form: Tablet Current Sponsor code: MK-4618 Other descriptive name: MK-4618 Concentration unit: mg milligram(s) Concentration type: equal Conc

Sponsors

Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patient is male or female of non-childbearing potential between 40 and 75 years of age inclusive on day of signing informed consent. 2. Patient has a clinical history of OAB (may be verbal per patient) for at least 3 months prior to Visit 1. OAB is defined as urgency, with or without urge incontinence, usually associated with frequency and nocturia. Urodynamic evaluation is not required. 3. Patient is able to read, understand and complete questionnaires and voiding diaries as well as collect, measure and record voided volume by herself/himself using a graduated beaker, which will be provided by the SPONSOR. 4. Patient meets either the OAB wet or OAB dry criteria described below based on the screening diary returned at Visit 2 and the placebo run-in diary returned at Visit 3: • OAB wet criteria: An average of = 8 micturitions/day and average number of urge incontinence episodes is = 1 per diary day AND the total number of urge incontinence episodes exceeds the total number of stress incontinence episodes from the screening diary. OR • OAB dry criteria: An average of = 8 micturitions/day and the average number of strong urge episodes is = 3 per diary day from the screening diary. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 890 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 405

Exclusion criteria

Exclusion criteria: 1.Patient has evidence of diabetes insipidus, uncontrolled hyperglycemia (fasting blood glucose >150 mg/dL or 8.33 mmol/l and/or non fasting blood glucose >180 mg/dL or 10.0 mmol/l), or uncontrolled hypercalcemia (blood total calcium >11 mg/dL or 2.75 mmol/l). 2.Patient has a systolic blood pressure > 160 mmHg or diastolic blood pressure >90 mmHg or resting heart rate (by pulse) > 100 beats per minute at Visit 1. 3.Patient has evidence from current history of symptomatic orthostatic hypotension. 4.Patient has a history of cerebral vascular accident, transient ischemic attack, unstable angina, or myocardial infarction within the previous 6 months. 5.Patient has lower urinary tract pathology that could, in the opinion of the investigator, be responsible for urgency, frequency, or incontinence; including but not limited to stress incontinence, urolithiasis, interstitial cystitis, urothelial tumor, prostatitis, and clinically relevant benign prostatic hypertrophy or bladder outlet obstruction as judged by the investigator. 6.Patient has a history of injury, surgery, or neurodegenerative diseases (e.g., multiple sclerosis) that could affect the lower urinary tract or its nerve supply. 7.Patient has a history of continual urine leakage or patient is unaware of urine leakage. 8.Patient has a history of surgery to correct stress urinary incontinence or prolapsed uterus within 6 months. 9.Patient has a known history of elevated postvoid residual defined per the investigator's local standard of care. 10.Patient has undergone bladder training or electrostimulation within 2 weeks prior to Visit 1 or plans to initiate either during the study. 11.Patient has active or recurrent (>6 episodes per year) urinary tract infections by clinical history, clinical symptoms, or laboratory criteria (= 5 WBC or = 26 bacteria (moderate) per high-powered field in a spun specimen and/or a positive urine culture defined as = 104 colony forming units (CFU)/mL in 1 specimen. 12.Patient has hematuria, including microscopic hematuria (> 5 RBCs/hpf). 13.Patient has a requirement for an indwelling catheter or intermittent catheterization. 14.Patient has a history of fecal incontinence. 15.Patient is not willing to discontinue use of the following therapies at least 2 weeks prior to completing the screening voiding diary and remain off these therapies for the duration of the study: •Anticholinergics including but not limited to oxybutynin, tolterodine, trospium, darifenacin, solifenacin, fesoterodine, hyoscyamine, and propantheline. •Smooth muscle relaxants including but not limited to flavoxate, dicyclomine, propiverine. •Beta 2 adrenergic agonists used for the treatment of stress urinary incontinence including but not limited to clenbuterol. •Synthetic antidiuretic hormones, including but not limited to desmopressin. 16. Patient is receiving therapy with any of the following medications for less than 8 weeks prior to Visit 1 or plans to initiate or change therapy during the study. • Tricyclic antidepressants or combinations including but not limited to amitiptyline, imipramine, and doxepin. • Serotonin and/or norepinephrine reuptake inhibitors including but limited to fluoxetine, paroxetine, and duloxetine. • Alpha-adrenergic agonists, including nonspecific sympathomimetic amines, such as but not limited to ephedrine, pseudoephedrine, and phenylephrine. • Angiotensin converting enzyme (ACE) inhibitors, including but not limited to enalapril,

Design outcomes

Primary

MeasureTime frame
Main Objective: (1.) To investigate a dose-related reduction in average number of daily micturitions compared with placebo at Week 8. (2.) To assess the safety and tolerability of treatment with the selected MK-4618 doses either alone or dosed concomitantly with tolterodine ER. ;Secondary Objective: (1.) After 8 weeks of dosing, to assess the effect of MK-4618 compared with the effect of placebo on: • the average number of urge incontinence episodes in patients with OAB wet • the average number of total incontinence episodes in patients with OAB wet • the average number of strong urge episodes in all patients with OAB (2.) To investigate whether there is a lower incidence of dry mouth when treated with MK-4618 compared with tolterodine ER. (3.) After 4 weeks of dosing, to assess the effect of concomitant dosing with MK-4618 and tolterodine ER compared with the effect of the selected dose of MK-4618 monotherapy and with the effect of tolterodine ER monotherapy on the average number of daily micturitions. ;Primary end point(s): Change from baseline in average number of daily micturitions.;Timepoint(s) of evaluation of this end point: For Part 1: Week 8. For Part 2: Week 4

Secondary

MeasureTime frame
Secondary end point(s): Safety and tolerability assessed via adverse experiences, laboratory variables related to blood chemistry and vital signs. Change from baseline in average number of daily urge incontinence episodes. Change from baseline in average number of daily total incontinence episodes. Change from baseline in average number of daily strong urge episodes.;Timepoint(s) of evaluation of this end point: For Part 1: Week 8. For Part 2: Week 4

Countries

Australia, Austria, Canada, Denmark, Germany, Italy, Japan, Korea, Republic of, Mexico, New Zealand, Norway, Peru, Poland, Russian Federation, South Africa, Sweden, United Kingdom, United States

Contacts

Public ContactClinical Project Manager

Merck Sharp & Dohme (Sweden) AB

+4608578 135 00

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026