Clinical Trial Results:
Randomised trial of detrusor botulinum toxin injection (BOTOX®) compared to placebo in women with idiopathic detrusor overactivity
Summary
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EudraCT number |
2004-002981-39 |
Trial protocol |
GB |
Global end of trial date |
18 Feb 2015
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Results information
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Results version number |
v1(current) |
This version publication date |
29 Mar 2019
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First version publication date |
29 Mar 2019
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
v1.1aug05
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Additional study identifiers
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ISRCTN number |
ISRCTN26091555 | ||
US NCT number |
- | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
University Hospitals of Leicester NHS Trust
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Sponsor organisation address |
Gwendolen Road, Leicester, United Kingdom, LE5 4PW
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Public contact |
Mrs Carolyn Maloney, University Hospitals of Leicester NHS Trust
Research and Innovation, +44 01162584109, carolyn.maloney@uhl-tr.nhs.uk
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Scientific contact |
Mrs Carolyn Maloney, University Hospitals of Leicester NHS Trust
Research and Innovation, +44 01162584109, carolyn.maloney@uhl-tr.nhs.uk
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
06 Sep 2010
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
19 Aug 2010
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Global end of trial reached? |
Yes
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Global end of trial date |
18 Feb 2015
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
To evaluate the efficacy of detrusor muscle injection of purified botulinum toxin A (BOTOX®) in relieving symptoms of detrusor overactivity.
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Protection of trial subjects |
Trial data were reviewed periodically by an independent data monitoring committee to ensure no excess adverse events were occurring.
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Background therapy |
- | ||
Evidence for comparator |
the comparator was placebo in this study because there was no active alternative treatment for women who had failed treatment with oral medication at the time of the study | ||
Actual start date of recruitment |
22 Jun 2006
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Long term follow-up planned |
Yes
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Long term follow-up rationale |
Safety, Efficacy | ||
Long term follow-up duration |
5 Years | ||
Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
United Kingdom: 240
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Worldwide total number of subjects |
240
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EEA total number of subjects |
240
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
154
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From 65 to 84 years |
86
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85 years and over |
0
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Recruitment
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Recruitment details |
Patients with a urodynamic diagnosis of detrusor overactivity who had failed to improve after 8 weeks of any antimuscarinic drugs were eligible. Patients had to have at least 8 voids in 24 hours and at least 2 episodes of moderate or severe urgency in 24 hours. | ||||||||||||||||||||||||
Pre-assignment
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Screening details |
Patients were screened at their first review appointment after commencing oral medication. Study information was given and patients were seen again two weeks later to complete the screening form to ensure eligibility (number of voids, number of urgency episodes | ||||||||||||||||||||||||
Period 1
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Period 1 title |
Randomisation and treatment
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Is this the baseline period? |
Yes | ||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst, Assessor | ||||||||||||||||||||||||
Blinding implementation details |
Drug and placebo were packaged identically in opaque sealed boxes with the randomisation number on the box; boxes were used in randomisation number order. Drug and placebo were not identical so the drug was made up by the scrub nurse out of sight of the administering surgeon who was given an unlabelled syringe to administer to the patient. The drug box number was recorded in the CRF. Surgeons administering the product were not involved in data collection.
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Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||||||||
Arm description |
Patients receiving placebo injection | ||||||||||||||||||||||||
Arm type |
Placebo | ||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
PR1
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Other name |
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Pharmaceutical forms |
Powder for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
Placebo powder for injection, reconstituted in 20mls normal saline
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Arm title
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Active treatment | ||||||||||||||||||||||||
Arm description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||
Investigational medicinal product name |
onabotulinum toxin
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Investigational medicinal product code |
PL 0426/0074
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Other name |
BOTOX
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Pharmaceutical forms |
Powder for solution for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
200 units of powder, reconstituted in 20mls of normal saline
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Period 2
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Period 2 title |
Six week follow up
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Is this the baseline period? |
No | ||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst, Assessor | ||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||||||||
Arm description |
Patients receiving placebo injection | ||||||||||||||||||||||||
Arm type |
Placebo | ||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
PR1
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Other name |
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Pharmaceutical forms |
Powder for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
Placebo powder for injection, reconstituted in 20mls normal saline
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Arm title
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Active treatment | ||||||||||||||||||||||||
Arm description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||
Investigational medicinal product name |
onabotulinum toxin
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Investigational medicinal product code |
PL 0426/0074
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Other name |
BOTOX
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Pharmaceutical forms |
Powder for solution for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
200 units of powder, reconstituted in 20mls of normal saline
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Period 3
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Period 3 title |
Three month follow up
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Is this the baseline period? |
No | ||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst, Assessor | ||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||||||||
Arm description |
Patients receiving placebo injection | ||||||||||||||||||||||||
Arm type |
Placebo | ||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
PR1
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Other name |
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Pharmaceutical forms |
Powder for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
Placebo powder for injection, reconstituted in 20mls normal saline
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Arm title
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Active treatment | ||||||||||||||||||||||||
Arm description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||
Investigational medicinal product name |
onabotulinum toxin
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Investigational medicinal product code |
PL 0426/0074
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Other name |
BOTOX
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Pharmaceutical forms |
Powder for solution for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
200 units of powder, reconstituted in 20mls of normal saline
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Period 4
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Period 4 title |
Six month follow up (Primary outcome)
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Is this the baseline period? |
No | ||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst, Assessor | ||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||||||||
Arm description |
Patients receiving placebo injection | ||||||||||||||||||||||||
Arm type |
Placebo | ||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
PR1
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Other name |
|||||||||||||||||||||||||
Pharmaceutical forms |
Powder for injection
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Routes of administration |
Intravesical use
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Dosage and administration details |
Placebo powder for injection, reconstituted in 20mls normal saline
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Arm title
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Active treatment | ||||||||||||||||||||||||
Arm description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||
Investigational medicinal product name |
onabotulinum toxin
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Investigational medicinal product code |
PL 0426/0074
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Other name |
BOTOX
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Pharmaceutical forms |
Powder for solution for injection
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||||||||||||||||||||||||
Routes of administration |
Intravesical use
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Dosage and administration details |
200 units of powder, reconstituted in 20mls of normal saline
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Baseline characteristics reporting groups
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Reporting group title |
Placebo
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Reporting group description |
Patients receiving placebo injection | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Active treatment
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Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Placebo
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Reporting group description |
Patients receiving placebo injection | ||
Reporting group title |
Active treatment
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Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||
Reporting group title |
Placebo
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Reporting group description |
Patients receiving placebo injection | ||
Reporting group title |
Active treatment
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Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||
Reporting group title |
Placebo
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Reporting group description |
Patients receiving placebo injection | ||
Reporting group title |
Active treatment
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Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||
Reporting group title |
Placebo
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Reporting group description |
Patients receiving placebo injection | ||
Reporting group title |
Active treatment
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Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) |
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End point title |
Urinary voiding frequency at 6 months after treatment | ||||||||||||
End point description |
Voiding frequency at six months after treatment
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End point type |
Primary
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End point timeframe |
Six months after treatment
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Notes [1] - 99 women returned valid diary data at this time point [2] - 100 women returned valid diary data at this time point |
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Statistical analysis title |
Comparison of primary outcome at 6 months | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Incontinence episodes per 24 hours | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of incontinence episodes | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Urgency episodes per 24 hours at six months | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of urgency episodes at six months | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Urgency severity score (IUSS) at six months | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of IUSS score at six months | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.0006 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Continence rate at six months | ||||||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of continent rate | ||||||||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||||||||
P-value |
= 0.002 | ||||||||||||||||||
Method |
OR and 95% CI | ||||||||||||||||||
Confidence interval |
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End point title |
ICIQ score at six months | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of ICIQ score at six months | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
IQoL score at six months | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six months after treatment
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Statistical analysis title |
Comparison of IQOL score at six months | ||||||||||||
Comparison groups |
Placebo v Active treatment
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Number of subjects included in analysis |
199
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Voiding frequency per 24 hours at six weeks | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Six weeks after treatment
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Notes [3] - 97patients returned valid urinary diaries for this data point |
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Statistical analysis title |
Comparison of voiding frequency at 6 weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
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||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
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End point title |
Incontinence episodes per 24 hours at six weeks | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
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End point timeframe |
Six weeks after treatment
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Statistical analysis title |
Comparison of incontinence episodes at six weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Urgency episodes per 24 hours at six weeks | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Six weeks after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of urgency episodes at six weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Urgency severity score (IUSS) at six weeks | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Six weeks after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of IUSS score at six weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||||||||
End point title |
Continence rate at six weeks | ||||||||||||||||||
End point description |
|||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||
End point timeframe |
Six weeks after treatment
|
||||||||||||||||||
|
|||||||||||||||||||
Statistical analysis title |
Comparison of continence rate at six weeks | ||||||||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||
Analysis type |
superiority | ||||||||||||||||||
P-value |
< 0.0001 | ||||||||||||||||||
Method |
OR and 95% CI | ||||||||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
ICIQ score at six weeks | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Six weeks after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of ICIQ score at six weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
IQoL score at six weeks | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Six weeks after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of IQOL score at six weeks | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
195
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
= 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Voiding frequency per 24 hours at three months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Thre months after treatment
|
||||||||||||
|
|||||||||||||
Notes [4] - 86 women returned valid urinary diaries for this period [5] - 86 women returned valid urinary diaries for this period |
|||||||||||||
Statistical analysis title |
Comparison of voiding frequency at 3 months | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Incontinence episodes per 24 hours at 3 months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of incontinence episodes @ three months | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Urgency episodes per 24 hours at three months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of urgency episodes at three months | ||||||||||||
Comparison groups |
Active treatment v Placebo
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
Urgency severity score (IUSS) at 3 months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of IUSS score at three months | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
= 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||||||||
End point title |
Continence rate at 3 months | ||||||||||||||||||
End point description |
|||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||||||||
|
|||||||||||||||||||
Statistical analysis title |
Comparison of continent rate at 3 months | ||||||||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||||
Analysis type |
superiority | ||||||||||||||||||
P-value |
< 0.0001 | ||||||||||||||||||
Method |
OR and 95% CI | ||||||||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
ICIQ score at 3 months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of ICIQ score at three months | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||
End point title |
IQOL score at 3 months | ||||||||||||
End point description |
|||||||||||||
End point type |
Secondary
|
||||||||||||
End point timeframe |
Three months after treatment
|
||||||||||||
|
|||||||||||||
Statistical analysis title |
Comparison of IQOL score at three months | ||||||||||||
Comparison groups |
Placebo v Active treatment
|
||||||||||||
Number of subjects included in analysis |
172
|
||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||
Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Wilcoxon (Mann-Whitney) | ||||||||||||
Confidence interval |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse events information
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Timeframe for reporting adverse events |
Adverse event reported was open throughout treatment and follow up phases of the study, according to ICH-GCP guidelines in force during the trial.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse event reporting additional description |
Standard European Directive definitions of adverse events and adverse reactions were followed (Directive 2001/20/EC). Fatal or life threatening events were reported as soon as possible but within seven days of the event. Non-fatal or life threatening were reported as soon as possible within fifteen days.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary name |
ICH-GCP | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
2001
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting groups
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Placebo
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group description |
Patients receiving placebo injection | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Active treatment
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group description |
Patients receiving 200 units onabotulinum toxin (BOTOX) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||
Substantial protocol amendments (globally) |
|||
Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
||
03 Aug 2005 |
• New protocol version 1.1
• Reduce dosage from 300 units to 200 units.
• Revised urinary retention rate of 17%
• Appeal against decision not to allow CI to treat.
• Request to contact not active patients directly.
MREC approval granted 08/09/05
MHRA approval granted 12/12/05
R&D approval granted: 22/06/2006
|
||
18 Nov 2005 |
• New protocol version 1.2
• Primary outcome changed to change in frequency episodes from baseline to follow-up.
• Sample size therefore reduced to 180.
• Follow-up shortened, so primary outcome is 6 months.
MREC approval granted 05/12/05
MHRA approval granted 05/01/06
R&D approval granted: 22/06/2006
|
||
19 Dec 2005 |
(Submitted electronically to MHRA after phone conversation with Mike Nicholls – effectively merged with amendment 2)
• New protocol version 1.3
• Primary outcome changed to urinary frequency between groups at 6 months.
• Sample size therefore increased to 240.
MREC approval granted 03/02/06
MHRA approval granted 05/01/06
R&D approval granted: 22/06/2006
|
||
04 Sep 2006 |
• Addition of reminder letters to be sent to patients regarding six week and six month follow up visits.
• DMEC charter
MREC approval granted 24/10/06 following modification
MHRA approval granted 07/09/07
R&D approval granted: 21/03/2007
|
||
13 Oct 2006 |
• Revised versions of information leaflet and consent form to allow administrator access to casenotes.
MREC approval granted 31/10/06
MHRA approval granted 25/09/07
R&D approval granted: 21/03/2007
|
||
07 Feb 2007 |
• New protocol version 6.1
• Includes detailed plans for open label extension, and approval of Extension documents (Consent Form, PI Leaflet, new PI leaflet for main study, GP letter)
MREC approval granted 19/03/07 following modification
MHRA approval granted 07/09/07
R&D approval granted: 21/03/2007
|
||
23 Mar 2007 |
• Notification of intention to add additional centres to the trial
MREC approval granted by date of each SSA approval:
Wolverhampton 18/07/07
Ashford 14/08/07
Yeovil 30/08/07
MHRA approval granted 03/09/07
|
||
20 Jun 2007 |
• New protocol version 6.2
• Notification of change of personnel in trial office, and approval of advertising posters for centres and GP practices in catchment areas of recruiting hospitals.
MREC approval for protocol (considered a NSA) granted 28/06/2007
MREC approval for amendment 9 granted 04/07/2007
MHRA approval granted 25/09/07
R&D approval granted: 05/10/2007
|
||
02 Aug 2007 |
• 3 month forms letter to be sent to a patient for their 3 month follow-up with a Form 5, Diary and Questionnaires
MREC approval granted 05/09/07
MHRA approval granted 25/09/07
R&D approval granted: 11/10/2007
|
||
14 Sep 2007 |
• Notification of new safety data from the manufacturers, and updated SPC.
• Copies of recent publications
• New versions of PIL and consent (v1.9 12th September)
• New investigator brochure v1.3
MREC approval granted: 11th December 2007
MHRA approval granted: 12th October 2007
R&D approval: 24th January 2008
|
||
30 Jul 2008 |
• Amendment of Form 7 (Form 7a)
• Help sheet for Forms 5 and 7
• For MHRA only – send copies of SSI approvals for latest three collaborating centres
MREC approval granted: 21st August 2008
MHRA approval granted: 20th August 2008
R&D approval: 14/11/2008
|
||
29 Aug 2008 |
• Updated protocol, version 6.3, dated 28th August 2008
MREC approval granted: 19th September 2008
MHRA approval granted: 15th September 2008
R&D approval: 14/11/2008
|
||
29 Jul 2011 |
RELAX Plus, qualitative sub-study; qualitative interviews with recruited patients to explore their lived experience of severe overactive bladder symptoms.
Including:
• Study protocol v 1.0 18th may 2011-06-20
• Interview consent form v 1.0 20th June 2011
• Patient information leaflet v 1.0 20th June 2011
• Research personnel CV & GCP
• Invitation letter v 1.0 20th June 2011
• Reply slip v 1.0 20th June 2011
MREC approval granted: 26/08/2011
MHRA approval granted: 30/08/2011
R&D approval: 27/10/2011
|
||
Interruptions (globally) |
|||
Were there any global interruptions to the trial? No | |||
Limitations and caveats |
|||
Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported | |||
Online references |
|||
http://www.ncbi.nlm.nih.gov/pubmed/22236796 |