ClinicalTrials.gg
CompletedNCT00507455Updated Aug 6, 2014Results posted

Solifenacin Succinate With Tamsulosin HCl in Males With Lower Urinary Tract Symptoms and Bladder Outlet Obstruction

A Phase 2 interventional study of solifenacin succinate and tamsulosin hydrochloride in Lower Urinary Tract Symptoms and Bladder Outlet Obstruction, sponsored by Astellas Pharma Inc. Completed at 33 sites in 6 countries. Open to male participants aged 45 Years and older. Per ClinicalTrials.gov, last updated 2014-08-06.

Sponsored by Astellas Pharma Inc · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
222
Allocation
Randomized
Ages
45 Years and older
Sex
Male
01

Study summary

A study to evaluate the safety of the co-administration of solifenacin succinate with tamsulosin hydrochloride in men with lower urinary tract symptoms (LUTS) and bladder outlet obstruction (BOO).

02

Conditions studied

  • Lower Urinary Tract Symptoms
  • Bladder Outlet Obstruction

Keywords

  • Lower Urinary Tract Symptoms
  • Bladder Outlet Obstruction
  • Treatment
  • Solifenacin Succinate
  • Tamsulosin hydrochloride
03

In context

Lower Urinary Tract Symptoms

416 studies on the registry are indexed under Lower Urinary Tract Symptoms; 110 are open to participants now.

This study's enrollment of 222 is above the median of 100 across 272 interventional studies indexed under Lower Urinary Tract Symptoms.

Browse Lower Urinary Tract Symptoms studies →

Lead sponsor

Astellas Pharma Inc is the lead sponsor of 525 studies on the registry; 4 are open to participants now.

Of its 28 completed or terminated interventional studies of FDA-regulated products, 19 (68%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
45 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosed with Lower Urinary Tract Symptoms (LUTS) and Bladder Outlet Obstruction (BOO)
  • BOO indication by a Bladder Outlet Obstruction Index (BOOI) ≥ 20
  • Patient has a total International Prostate Symptom Score (IPPS) score of ≥ 8 (Inclusion criteria for Baseline also)
  • Patient had a maximum urinary flow rate of ≤ 12 mL/sec, with a voided volume of ≥ 120 mL during free flow in a representative assessment of uroflowmetry.

Exclusion criteria

Exclusion Criteria:

  • History of urinary retention in preceding 12 months
  • Current urinary tract infection (UTI) or symptomatic and recurrent UTI of > 3 episodes within 12 months.
  • Known clinical history or diagnosis of chronic inflammation, stone in bladder or ureter, or other causes of outflow tract obstruction
  • Known diagnosis or history of carcinoma or previous pelvic radiation therapy, except non- basal or squamous cell carcinoma of the skin that had been treated successfully
  • cardiovascular or cerebrovascular diseases within 6 months prior to Visit 1
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
222 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    Participants received once daily, oral doses of placebo matching solifenacin succinate and tamsulosin tablets for 12 weeks.

    Drug: Placebo to solifenacin · Drug: Placebo to tamsulosin

  • Experimental
    6 mg Solifenacin + 0.4 mg Tamsulosin

    Participants received once daily, oral doses of 6 mg solifenacin succinate and 0.4 mg tamsulosin tablets for 12 weeks.

    Drug: solifenacin succinate · Drug: tamsulosin hydrochloride

  • Experimental
    9 mg Solifenacin + 0.4 mg Tamsulosin

    Participants received once daily, oral doses of 9 mg solifenacin succinate and 0.4 mg tamsulosin tablets for 12 weeks.

    Drug: solifenacin succinate · Drug: tamsulosin hydrochloride

Interventions

  • Solifenacin succinate tablets

    Also known as: YM905, VESIcare

  • Tamsulosin hydrochloride Oral Control Absorption System (TOCAS) tablets

    Also known as: Omnic Ocas, Flomax CR

  • DrugPlacebo to solifenacin
  • DrugPlacebo to tamsulosin
06

What researchers measure

Primary outcomes

  1. Change From Baseline to End of Treatment in Detrusor Pressure at Maximum Flow Rate (PdetQmax)

    Detrusor pressure (Pdet) measures the force the detrusor muscle is exerting. This pressure is required to expel urine from the bladder during normal voiding. A high detrusor pressure may be observed in the presence of outflow tract obstruction. Detrusor pressure at maximum urinary flow rate (PdetQmax) was evaluated using simultaneous recording of urinary voiding by an uroflowmeter during detrusor pressure evaluation by cystometry.

    Time frame: Baseline and Week 12

  2. Change From Baseline to End of Treatment in Maximum Flow Rate (Qmax)

    The maximum flow rate (Qmax) during a micturition (urination) was recorded using uroflowmetry. A reduction in maximum flow rate may be due to an obstruction of the bladder outlet or a failure of the detrusor muscle to aid in expelling urine.

    Time frame: Baseline and Week 12

Secondary outcomes

  1. Change From Baseline in Post Void Residual Volume (PVR)

    Healthy micturitions result in complete emptying of the bladder. Post Void Residual (PVR) is the volume of urine retained after voiding (post-void residual urine). Post void residual volume was assessed by abdominal ultrasound. An increasing PVR over time is an indicator of abnormal bladder function or detrusor decompensation. End-of-treatment is the last post-baseline assessment during the treatment period. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  2. Change From Baseline to End of Treatment in Bladder Contractility Index (BCI)

    The Bladder Contractility Index (BCI) is a value used to measure the degree of contractility. BCI was calculated using the following formula: BCI = pdetQmax + 5Qmax. Strong contractility is a BCI \> 150, normal contractility is a BCI of 100-150 and weak contractility is a BCI of \< 100. LS means were adjusted for pooled center and Baseline value.

    Time frame: Baseline and Week 12

  3. Change From Baseline to End of Treatment in Percent Bladder Voiding Efficiency (BVE)

    Percent Bladder Voiding Efficiency (BVE) is a product of bladder contractility against the urethral resistance and is measured according to the degree of bladder emptying. BVE is expressed as a percentage and is calculated using the formula: Bladder Voiding efficiency = (Voided volume x 100)/maximum cystometric capacity. A higher number indicates a higher voiding efficiency. LS means were adjusted for pooled center and Baseline value.

    Time frame: Baseline and Week 12

  4. Safety Assessed by Adverse Events (AEs), Electrocardiogram (ECG), Vital Signs, Physical Exam and Laboratory Tests

    Abnormal laboratory parameters, vital signs or ECG data were defined as AEs if the abnormality induced clinical signs or symptoms, needed active intervention, interruption or discontinuation of study medication or was clinically significant. A serious AE was an event resulting in death, persistent or significant disability/incapacity or congenital anomaly or birth defect, was life-threatening, required or prolonged hospitalization or was considered medically important. AEs were assessed by the Investigator for intensity as mild (no disruption of normal daily activities), moderate (affected normal daily activities) or severe (inability to perform daily activities) and for causal relationship to study drug.

    Time frame: From first dose to within 30 days after last dose of double blind study medication (up to 16 weeks).

  5. Change From Baseline in International Prostate Symptoms Score (IPSS)

    The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms and is based on the answers to 7 questions concerning urinary symptoms: * Sensation of incomplete emptying * Repeat urinating after 2 hours (frequency) * Start and stop several times (intermittency) * Urgency * Weak stream * Straining * Nocturia Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The total score can therefore range from 0 to 35 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  6. Change From Baseline in IPSS Voiding Score

    The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms based on the answers to 7 questions concerning urinary symptoms. Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The voiding score is the sum of the responses to 4 questions relating to urination (incomplete emptying, intermittency, weak stream and straining) and ranges from 0 to 20 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  7. Change From Baseline in IPSS Storage Score

    The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms based on the answers to 7 questions concerning urinary symptoms. Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The storage symptom score is the sum of the responses to 3 questions relating to storage symptoms (frequency, urgency and nocturia) and ranges from 0 to 15 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  8. Change From Baseline in Patient Perception of Bladder Condition (PPBC)

    The patient perception of bladder condition (PPBC) questionnaire asks participants to assess their bladder condition using a 6-point validated Likert scale which ranges from 1 (does not cause me any problems at all) to 6 (causes me many severe problems). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  9. Change From Baseline in Number of Micturitions Per 24 Hours

    A micturition is any voluntary urination, excluding episodes of incontinence only. The mean number of micturitions per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  10. Change From Baseline in Number of Urgency Episodes Per 24 Hours

    For each micturition and/or incontinence episode participants rated the degree of associated urgency (the sudden compelling desire to pass urine, which is difficult to defer) according to the following scale: 0: No Urgency, felt no need to empty my bladder but did so for another reason; 1: Mild urgency, could postpone passing water for as long as necessary; 2: Moderate urgency, could postpone passing water for a short while; 3: Severe urgency, could not postpone passing water; 4: Urge incontinence, leaked before reaching the toilet. An urgency episode is defined as an episode with urgency severity of three or higher. The mean number of urgency episodes per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  11. Change From Baseline in Number of Incontinence Episodes Per 24 Hours

    The mean number of incontinence episodes (the involuntary leakage of urine) per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  12. Change From Baseline in Volume Voided Per Micturition

    The mean volume voided per micturition was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 2, 4, 8 and 12

  13. Change From Baseline in International Consultation on Incontinence Questionnaire - Male Lower Urinary Tract Symptom (ICIQ MLUTS) Total Symptom Score

    Male lower urinary tract symptoms were assessed by the ICIQ MLUTS questionnaire which consists of 13 questions regarding urinary symptoms. Each question is answered by the participant on a scale from 0 (never) to 4 (all the time). The total symptom score ranges from 0 to 52, where larger scores correspond to worse conditions. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 4, 8 and 12

  14. Change From Baseline in ICIQ-MLUTS Total Symptom Bother Score

    The degree to which urinary symptoms bothered participants was assessed by the ICIQ MLUTS questionnaire which consists of 13 symptom bother questions. Each question is answered by the participant on a scale from 0 (not at all) to 10 (a great deal). The total bother score ranges from 0 to 130, where larger scores correspond to worse outcomes. Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 4, 8 and 12

  15. Change From Baseline in International Consultation on Incontinence Questionnaire - Lower Urinary Tract Symptom Quality of Life (ICIQ-LUTSqol) Symptom Score

    Quality of life was assessed by the ICIQ-LUTSqol questionnaire which consists of 19 questions regarding daily activities affected by urinary problems. Participants responded to each question on a scale from 1 (not at all) to 4 (a lot). The total symptom score ranges from 19 to 76, where larger scores correspond to a lesser quality of life). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 4, 8 and 12

  16. Change From Baseline in ICIQ-LUTSqol Overall Symptom Interference of Life Score

    Participants were asked to rate how much their urinary symptoms interfered overall with their everyday life on a scale from 0 (not at all) to 10 (a great deal). Least squares (LS) means were adjusted for pooled center and the Baseline value.

    Time frame: Baseline and Weeks 4, 8 and 12

07

Results

Posted Aug 6, 2014
Limitations and caveats
Company makes no warranties or representations of any kind as to the posting, expressed or implied, including warranties of merchantability and fitness for a particular purpose, and shall not be liable for any damages.

Participant flow

Participant flow — Overall Study
MilestonePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Started747474
Completed626862
Not completed12612
Withdrew: Adverse event336
Withdrew: Withdrawal by subject212
Withdrew: Protocol violation411
Withdrew: Lost to follow-up202
Withdrew: Lack of efficacy010
Withdrew: Other - miscellaneous reason101

Outcome measures

PrimaryChange From Baseline to End of Treatment in Detrusor Pressure at Maximum Flow Rate (PdetQmax)

Detrusor pressure (Pdet) measures the force the detrusor muscle is exerting. This pressure is required to expel urine from the bladder during normal voiding. A high detrusor pressure may be observed in the presence of outflow tract obstruction. Detrusor pressure at maximum urinary flow rate (PdetQmax) was evaluated using simultaneous recording of urinary voiding by an uroflowmeter during detrusor pressure evaluation by cystometry.

Time frame:
Baseline and Week 12
Reported as:
Least squares mean · cmH2O
Change From Baseline to End of Treatment in Detrusor Pressure at Maximum Flow Rate (PdetQmax)
cmH2OPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Change From Baseline to End of Treatment in Detrusor Pressure at Maximum Flow Rate (PdetQmax)-1.69 ± 3.15-7.84 ± 2.95-6.69 ± 3.20
Statistical analysis
  • Placebo vs 6 mg Solifenacin + 0.4 mg Tamsulosin · Ls mean difference: -6.15 · 95% CI -14.67 to 2.37Least squares (LS) means were analyzed using analysis of covariance (ANCOVA) with the site and treatment group as the factors and the baseline value as the covariate.
  • Placebo vs 9 mg Solifenacin + 0.4 mg Tamsulosin · Ls mean difference: -5.00 · 95% CI -13.85 to 3.84Least squares (LS) means were analyzed using analysis of covariance (ANCOVA) with the site and treatment group as the factors and the baseline value as the covariate.
SecondaryChange From Baseline in Post Void Residual Volume (PVR)

Healthy micturitions result in complete emptying of the bladder. Post Void Residual (PVR) is the volume of urine retained after voiding (post-void residual urine). Post void residual volume was assessed by abdominal ultrasound. An increasing PVR over time is an indicator of abnormal bladder function or detrusor decompensation. End-of-treatment is the last post-baseline assessment during the treatment period. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · mL
Change From Baseline in Post Void Residual Volume (PVR)
mLPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=61, 67, 58)-10.21 ± 6.91216.78 ± 6.5258.97 ± 7.015
Week 4 (N=60, 67, 59)-7.86 ± 6.22514.92 ± 5.8309.65 ± 6.229
Week 8 (N=58, 66, 58)-12.44 ± 6.4349.64 ± 5.9506.64 ± 6.373
Week 12 (N=57, 63, 57)1.16 ± 7.34626.81 ± 6.84318.72 ± 7.244
End of Treatment (N=62, 67, 59)0.14 ± 6.80925.63 ± 6.47719.07 ± 6.923
PrimaryChange From Baseline to End of Treatment in Maximum Flow Rate (Qmax)

The maximum flow rate (Qmax) during a micturition (urination) was recorded using uroflowmetry. A reduction in maximum flow rate may be due to an obstruction of the bladder outlet or a failure of the detrusor muscle to aid in expelling urine.

Time frame:
Baseline and Week 12
Reported as:
Least squares mean · mL/sec
Change From Baseline to End of Treatment in Maximum Flow Rate (Qmax)
mL/secPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Change From Baseline to End of Treatment in Maximum Flow Rate (Qmax)0.17 ± 0.431.85 ± 0.412.35 ± 0.43
Statistical analysis
  • Placebo vs 6 mg Solifenacin + 0.4 mg Tamsulosin · Ls mean difference: 1.67 · 95% CI 0.50 to 2.85Least squares (LS) means were analyzed using analysis of covariance (ANCOVA) with the site and treatment group as the factors and the baseline value as the covariate.
  • Placebo vs 9 mg Solifenacin + 0.4 mg Tamsulosin · Ls mean difference: 2.18 · 95% CI 0.98 to 3.37Least squares (LS) means were analyzed using analysis of covariance (ANCOVA) with the site and treatment group as the factors and the baseline value as the covariate.
SecondaryChange From Baseline to End of Treatment in Bladder Contractility Index (BCI)

The Bladder Contractility Index (BCI) is a value used to measure the degree of contractility. BCI was calculated using the following formula: BCI = pdetQmax + 5Qmax. Strong contractility is a BCI \> 150, normal contractility is a BCI of 100-150 and weak contractility is a BCI of \< 100. LS means were adjusted for pooled center and Baseline value.

Time frame:
Baseline and Week 12
Reported as:
Least squares mean · units on a scale
Change From Baseline to End of Treatment in Bladder Contractility Index (BCI)
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Change From Baseline to End of Treatment in Bladder Contractility Index (BCI)-1.63 ± 3.7051.84 ± 3.4753.86 ± 3.764
SecondaryChange From Baseline to End of Treatment in Percent Bladder Voiding Efficiency (BVE)

Percent Bladder Voiding Efficiency (BVE) is a product of bladder contractility against the urethral resistance and is measured according to the degree of bladder emptying. BVE is expressed as a percentage and is calculated using the formula: Bladder Voiding efficiency = (Voided volume x 100)/maximum cystometric capacity. A higher number indicates a higher voiding efficiency. LS means were adjusted for pooled center and Baseline value.

Time frame:
Baseline and Week 12
Reported as:
Least squares mean · Percent voiding efficiency
Change From Baseline to End of Treatment in Percent Bladder Voiding Efficiency (BVE)
Percent voiding efficiencyPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Change From Baseline to End of Treatment in Percent Bladder Voiding Efficiency (BVE)-0.67 ± 2.757-1.38 ± 2.634-3.79 ± 2.812
SecondarySafety Assessed by Adverse Events (AEs), Electrocardiogram (ECG), Vital Signs, Physical Exam and Laboratory Tests

Abnormal laboratory parameters, vital signs or ECG data were defined as AEs if the abnormality induced clinical signs or symptoms, needed active intervention, interruption or discontinuation of study medication or was clinically significant. A serious AE was an event resulting in death, persistent or significant disability/incapacity or congenital anomaly or birth defect, was life-threatening, required or prolonged hospitalization or was considered medically important. AEs were assessed by the Investigator for intensity as mild (no disruption of normal daily activities), moderate (affected normal daily activities) or severe (inability to perform daily activities) and for causal relationship to study drug.

Time frame:
From first dose to within 30 days after last dose of double blind study medication (up to 16 weeks).
Reported as:
Number · participants
Safety Assessed by Adverse Events (AEs), Electrocardiogram (ECG), Vital Signs, Physical Exam and Laboratory Tests
participantsPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Any adverse event293837
Mild adverse event212120
Moderate adverse event61312
Severe adverse event245
Serious adverse event122
AE leading to study drug discontinuation336
Drug-related adverse events152426
Deaths000
SecondaryChange From Baseline in International Prostate Symptoms Score (IPSS)

The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms and is based on the answers to 7 questions concerning urinary symptoms: * Sensation of incomplete emptying * Repeat urinating after 2 hours (frequency) * Start and stop several times (intermittency) * Urgency * Weak stream * Straining * Nocturia Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The total score can therefore range from 0 to 35 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in International Prostate Symptoms Score (IPSS)
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=61, 67, 58)-3.8 ± 0.58-4.5 ± 0.54-4.7 ± 0.59
Week 4 (N=60, 65, 57)-5.3 ± 0.63-6.4 ± 0.59-6.2 ± 0.64
Week 8 (N=58, 67, 57)-6.8 ± 0.74-7.1 ± 0.68-6.9 ± 0.74
Week 12 (N=58, 63, 57)-6.9 ± 0.66-7.9 ± 0.62-7.2 ± 0.66
End of Treatment (N=62, 67, 59)-6.6 ± 0.65-8.0 ± 0.62-6.9 ± 0.66
SecondaryChange From Baseline in IPSS Voiding Score

The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms based on the answers to 7 questions concerning urinary symptoms. Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The voiding score is the sum of the responses to 4 questions relating to urination (incomplete emptying, intermittency, weak stream and straining) and ranges from 0 to 20 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in IPSS Voiding Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=61, 67, 58)-2.2 ± 0.39-2.9 ± 0.37-2.6 ± 0.40
Week 4 (N=60, 65, 57)-3.2 ± 0.45-3.8 ± 0.42-3.6 ± 0.46
Week 8 (N=58, 67, 57)-4.1 ± 0.49-4.3 ± 0.45-3.8 ± 0.49
Week 12 (N=58, 64, 57)-4.0 ± 0.45-4.7 ± 0.42-4.1 ± 0.45
End of Treatment (N=62, 67, 59)-3.9 ± 0.44-4.6 ± 0.42-3.9 ± 0.45
SecondaryChange From Baseline in IPSS Storage Score

The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms based on the answers to 7 questions concerning urinary symptoms. Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The storage symptom score is the sum of the responses to 3 questions relating to storage symptoms (frequency, urgency and nocturia) and ranges from 0 to 15 (asymptomatic to very symptomatic). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in IPSS Storage Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=62, 67, 58)-1.5 ± 0.29-1.6 ± 0.27-2.1 ± 0.29
Week 4 (N=60, 66, 58)-2.1 ± 0.30-2.6 ± 0.28-2.5 ± 0.30
Week 8 (N=58, 67, 58)-2.7 ± 0.34-2.8 ± 0.31-3.1 ± 0.33
Week 12 (N=58, 63, 57)-2.8 ± 0.30-3.3 ± 0.29-3.1 ± 0.30
End of Treatment (N=62, 67, 59)-2.7 ± 0.30-3.4 ± 0.28-3.0 ± 0.30
SecondaryChange From Baseline in Patient Perception of Bladder Condition (PPBC)

The patient perception of bladder condition (PPBC) questionnaire asks participants to assess their bladder condition using a 6-point validated Likert scale which ranges from 1 (does not cause me any problems at all) to 6 (causes me many severe problems). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in Patient Perception of Bladder Condition (PPBC)
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=61, 66, 58)-0.5 ± 0.12-0.3 ± 0.11-0.5 ± 0.12
Week 4 (N=60, 66, 58)-0.7 ± 0.13-0.5 ± 0.12-0.9 ± 0.13
Week 8 (N=58, 67, 58)-1.0 ± 0.14-0.8 ± 0.13-1.1 ± 0.14
Week 12 (N=58, 64, 57)-1.1 ± 0.14-1.0 ± 0.13-1.1 ± 0.14
End of Treatment (N=62, 67, 59)-1.1 ± 0.13-0.9 ± 0.13-1.1 ± 0.14
SecondaryChange From Baseline in Number of Micturitions Per 24 Hours

A micturition is any voluntary urination, excluding episodes of incontinence only. The mean number of micturitions per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · micturitions
Change From Baseline in Number of Micturitions Per 24 Hours
micturitionsPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=60, 67, 59)-0.44 ± 0.261-1.25 ± 0.243-1.19 ± 0.261
Week 4 (N=60, 65, 58)-1.03 ± 0.285-1.32 ± 0.270-1.72 ± 0.287
Week 8 (N=58, 67, 58)-1.33 ± 0.330-1.31 ± 0.302-2.00 ± 0.327
Week 12 (N=58, 65, 58)-1.07 ± 0.333-1.91 ± 0.309-1.89 ± 0.330
End of Treatment (N=60, 67, 59)-0.95 ± 0.328-1.91 ± 0.306-1.87 ± 0.328
SecondaryChange From Baseline in Number of Urgency Episodes Per 24 Hours

For each micturition and/or incontinence episode participants rated the degree of associated urgency (the sudden compelling desire to pass urine, which is difficult to defer) according to the following scale: 0: No Urgency, felt no need to empty my bladder but did so for another reason; 1: Mild urgency, could postpone passing water for as long as necessary; 2: Moderate urgency, could postpone passing water for a short while; 3: Severe urgency, could not postpone passing water; 4: Urge incontinence, leaked before reaching the toilet. An urgency episode is defined as an episode with urgency severity of three or higher. The mean number of urgency episodes per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · urgency episodes
Change From Baseline in Number of Urgency Episodes Per 24 Hours
urgency episodesPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=60, 67, 59)-0.59 ± 0.246-0.89 ± 0.230-0.95 ± 0.246
Week 4 (N=60, 65, 58)-1.18 ± 0.254-1.39 ± 0.240-1.34 ± 0.255
Week 8 (N=58, 67, 58)-1.45 ± 0.263-1.34 ± 0.241-1.08 ± 0.261
Week 12 (N=58, 65, 58)-1.47 ± 0.247-1.54 ± 0.230-1.18 ± 0.245
End of Treatment (N=60, 67, 59)-1.41 ± 0.249-1.45 ± 0.232-1.23 ± 0.249
SecondaryChange From Baseline in Number of Incontinence Episodes Per 24 Hours

The mean number of incontinence episodes (the involuntary leakage of urine) per 24 hours was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · incontinence episodes
Change From Baseline in Number of Incontinence Episodes Per 24 Hours
incontinence episodesPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=13, 10, 13)-0.81 ± 0.368-1.45 ± 0.412-1.01 ± 0.352
Week 4 (N=13, 10, 13)-1.00 ± 0.533-1.45 ± 0.596-0.81 ± 0.508
Week 8 (N=12, 10, 12)-1.86 ± 0.489-1.55 ± 0.508-0.78 ± 0.453
Week 12 (N=12, 9, 12)-1.99 ± 0.600-1.48 ± 0.654-0.85 ± 0.551
End of Treatment (N=13, 10, 13)-1.54 ± 0.571-1.66 ± 0.639-1.02 ± 0.545
SecondaryChange From Baseline in Volume Voided Per Micturition

The mean volume voided per micturition was calculated from data recorded by the participant in the micturition diary for the 3 days preceding each clinic visit. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 2, 4, 8 and 12
Reported as:
Least squares mean · mL
Change From Baseline in Volume Voided Per Micturition
mLPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 2 (N=60, 67, 59)9.36 ± 4.41531.46 ± 4.10918.25 ± 4.408
Week 4 (N=60, 65, 58)10.40 ± 5.20735.27 ± 4.92030.34 ± 5.236
Week 8 (N=58, 67, 58)10.50 ± 6.12533.72 ± 5.59635.53 ± 6.064
Week 12 (N=58, 65, 58)9.03 ± 5.70335.02 ± 5.28331.18 ± 5.643
End of Treatment (N=60, 67, 59)7.56 ± 5.70036.26 ± 5.30530.33 ± 5.691
SecondaryChange From Baseline in International Consultation on Incontinence Questionnaire - Male Lower Urinary Tract Symptom (ICIQ MLUTS) Total Symptom Score

Male lower urinary tract symptoms were assessed by the ICIQ MLUTS questionnaire which consists of 13 questions regarding urinary symptoms. Each question is answered by the participant on a scale from 0 (never) to 4 (all the time). The total symptom score ranges from 0 to 52, where larger scores correspond to worse conditions. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in International Consultation on Incontinence Questionnaire - Male Lower Urinary Tract Symptom (ICIQ MLUTS) Total Symptom Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 4 (N=58, 66, 52)-3.9 ± 0.60-4.5 ± 0.56-4.6 ± 0.64
Week 8 (N=55, 63, 53)-5.5 ± 0.68-5.6 ± 0.63-5.8 ± 0.70
Week 12 (N=55, 61, 53)-5.5 ± 0.70-6.5 ± 0.66-5.9 ± 0.71
End of Treatment (N=60, 66, 57)-5.2 ± 0.69-6.0 ± 0.65-5.8 ± 0.71
SecondaryChange From Baseline in ICIQ-MLUTS Total Symptom Bother Score

The degree to which urinary symptoms bothered participants was assessed by the ICIQ MLUTS questionnaire which consists of 13 symptom bother questions. Each question is answered by the participant on a scale from 0 (not at all) to 10 (a great deal). The total bother score ranges from 0 to 130, where larger scores correspond to worse outcomes. Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in ICIQ-MLUTS Total Symptom Bother Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 4 (N=52, 57, 48)-14.6 ± 2.76-11.0 ± 2.62-17.0 ± 2.88
Week 8 (N=51, 55, 47)-20.7 ± 2.88-19.4 ± 2.75-20.7 ± 3.01
Week 12 (N=51, 51, 47)-22.6 ± 2.78-23.9 ± 2.74-23.9 ± 2.91
End of Treatment (N=58, 60, 53)-21.7 ± 2.71-21.1 ± 2.65-22.4 ± 2.84
SecondaryChange From Baseline in International Consultation on Incontinence Questionnaire - Lower Urinary Tract Symptom Quality of Life (ICIQ-LUTSqol) Symptom Score

Quality of life was assessed by the ICIQ-LUTSqol questionnaire which consists of 19 questions regarding daily activities affected by urinary problems. Participants responded to each question on a scale from 1 (not at all) to 4 (a lot). The total symptom score ranges from 19 to 76, where larger scores correspond to a lesser quality of life). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in International Consultation on Incontinence Questionnaire - Lower Urinary Tract Symptom Quality of Life (ICIQ-LUTSqol) Symptom Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 4 (N=33, 36, 36)-2.7 ± 0.93-2.4 ± 0.88-5.1 ± 0.88
Week 8 (N=33, 32, 31)-3.6 ± 0.98-4.3 ± 0.99-6.7 ± 1.01
Week 12 (N=35, 33, 28)-4.8 ± 1.10-6.5 ± 1.12-8.4 ± 1.21
End of Treatment (N=39, 39, 38)-4.7 ± 1.05-5.3 ± 1.04-7.3 ± 1.05
SecondaryChange From Baseline in ICIQ-LUTSqol Overall Symptom Interference of Life Score

Participants were asked to rate how much their urinary symptoms interfered overall with their everyday life on a scale from 0 (not at all) to 10 (a great deal). Least squares (LS) means were adjusted for pooled center and the Baseline value.

Time frame:
Baseline and Weeks 4, 8 and 12
Reported as:
Least squares mean · units on a scale
Change From Baseline in ICIQ-LUTSqol Overall Symptom Interference of Life Score
units on a scalePlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Week 4 (N=57, 66, 56)-1.2 ± 0.29-1.2 ± 0.27-1.3 ± 0.29
Week 8 (N=56, 65, 55)-1.7 ± 0.29-1.7 ± 0.26-1.8 ± 0.29
Week 12 (N=56, 63, 55)-2.1 ± 0.28-2.0 ± 0.26-2.2 ± 0.28
End of Treatment (N=60, 66, 57)-2.0 ± 0.28-1.9 ± 0.26-2.1 ± 0.29

Adverse events

Collected over From first dose to within 30 days after last dose of double blind study medication (up to 16 weeks).. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Placebo—1/74 (1.4%)10/74 (13.5%)
6 mg Solifenacin + 0.4 mg Tamsulosin—2/74 (2.7%)17/74 (23%)
9 mg Solifenacin + 0.4 mg Tamsulosin—2/74 (2.7%)19/74 (25.7%)
Most frequent serious events
Most frequent serious events
EventPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Myocardial infarctionCardiac disorders0/741/740/74
ConstipationGastrointestinal disorders0/741/740/74
UrethritisInfections and infestations1/740/740/74
Colon cancerNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/740/741/74
Accidental overdoseInjury, poisoning and procedural complications0/740/741/74
Urinary retentionRenal and urinary disorders0/741/740/74
ProstatitisReproductive system and breast disorders1/740/740/74
Most frequent other events
Most frequent other events
EventPlacebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg Tamsulosin
Dry mouthGastrointestinal disorders3/749/7414/74
ConstipationGastrointestinal disorders1/743/746/74
HeadacheNervous system disorders6/743/742/74
Vision blurredEye disorders1/741/744/74
FatigueGeneral disorders2/744/740/74
DizzinessNervous system disorders3/741/744/74

Baseline characteristics

Age, Continuous
Age, Continuous(years)Placebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg TamsulosinTotal
Mean64.3 ± 7.6063.8 ± 8.4365.6 ± 8.2664.6 ± 8.11
Sex: Female, Male
Sex: Female, Male(Participants)Placebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg TamsulosinTotal
Female0000
Male747474222
Race/Ethnicity, Customized
Race/Ethnicity, Customized(participants)Placebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg TamsulosinTotal
White717469214
Black or African-American2024
Asian1012
Other0022
Race/Ethnicity, Customized
Race/Ethnicity, Customized(participants)Placebo6 mg Solifenacin + 0.4 mg Tamsulosin9 mg Solifenacin + 0.4 mg TamsulosinTotal
Non Hispanic or Latino727169212
Hispanic or Latino23510
08

Study locations

33 sites
  • Homewood, Alabama 35209, United States
  • La Mesa, California 91942, United States
  • Long Beach, California 90806, United States
  • San Bernardino, California 92404, United States
  • San Diego, California 92108, United States
  • Middlebury, Connecticut 06762, United States
  • New Port Richey, Florida 34655, United States
  • Coeur d'Alene, Idaho 83814, United States
  • Des Moines, Iowa 50309, United States
  • Iowa City, Iowa 52242, United States
  • Watertown, Massachusetts 02472, United States
  • Las Vegas, Nevada 89148, United States
  • New York, New York 10021, United States
  • Greensboro, North Carolina 27403, United States
  • Austin, Texas 78705, United States
  • San Antonio, Texas 78229, United States
  • Charlottesville, Virginia 22908, United States
  • Edegem, 2650, Belgium
  • Kortrijk, Belgium
  • Olomouc, Czech Republic
  • Pilsen, Czech Republic
  • Prague, Czech Republic
  • Aachen, Germany
  • Hagenow, Germany
  • Landshut, Germany
  • Muelheim, Germany
  • Budapest, Hungary
  • Szeged, Hungary
  • Szekszard, Hungary
  • Bialystok, Poland
  • Myslowice, Poland
  • Szczecin, Poland
  • Warszawa, Poland
09

References and documents

Publications

  • Kaplan SA, He W, Koltun WD, Cummings J, Schneider T, Fakhoury A. Solifenacin plus tamsulosin combination treatment in men with lower urinary tract symptoms and bladder outlet obstruction: a randomized controlled trial. Eur Urol. 2013 Jan;63(1):158-65. doi: 10.1016/j.eururo.2012.07.003. Epub 2012 Jul 17. PubMed 22831853 ↗
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jun 2007, a primary completion of Aug 2008 and a completion of Aug 2008. It does not say whether these dates are actual or estimated.

Results were first posted in Aug 2014, 6 years after primary completion. A results delay was requested in Sep 2009.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 25, 2007
First posted
Jul 26, 2007
Start
Jun 2007
Primary completionActual
Aug 2008
CompletionActual
Aug 2008
Results delay requested
Sep 25, 2009
Results first posted
Aug 6, 2014
Last update
Aug 6, 2014
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 6, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00507455
Responsible party
Sponsor
First posted
Jul 26, 2007
Start date
Jun 2007
Primary completion
Aug 2008
Completion
Aug 2008
Results posted
Aug 6, 2014
Last update
Aug 6, 2014

Study contacts

Use Central Contact
study director · Astellas Pharma US, Inc.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Solifenacin · Tamsulosin

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