Overactive BladderPhase 2NCT01657409
Different Injection Number of the Same Dose of Botulinum Toxin A on Overactive Bladder Syndrome
A Phase 2 study testing BoNT-A (10 injection), BoNT-A (20 injection) and BoNT-A (40 injection) in people with Overactive Bladder, run by Buddhist Tzu Chi General Hospital at 1 site in Taiwan.
Trial summary
Overactive bladder (OAB) is a symptom syndrome characterized by urgency frequency with or without urge urinary incontinence (UUI) that may affect the patients' quality of life. Current medical treatments are usually unsuccessful in completely eradicating urgency sensation. Read more about this study
- Who is it for?
- Ages 20 to 90 years
- Conditions the study is for
- Overactive Bladder
- What is being tested?
- BoNT-A (10 injection), BoNT-A (20 injection) and BoNT-A (40 injection)
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- 1 siteTaiwan
- Study dates
- Aug 2012to Jun 2014
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- The inclusion criteria were patients of either gender, aged 20 years or more, with urodynamic DO and at least one episode of urgency (urgency severity scale, USS≥2) or UUI per day as recorded in the 3-day voiding diary. Patients with neurogenic bladder, urodynamically confirmed bladder outlet obstruction, prior pelvic surgery, anti-incontinence surgery or urinary tract infection (UTI, white blood cell (WBC) >10/high power field (HPF) in urinalysis) were excluded. Informed consent was obtained from all patients before randomization. This study should be approved by the Institution Review Board and Ethics Committee of the hospital.
Who cannot join
- Use of antimuscarinic agent and effective in treatment of lower urinary tract symptoms
- Patients with severe cardiopulmonary disease and such as congestive heart failure, arrhythmia, poorly controlled hypertension, not able to receive regular follow-up
- Patients with bladder outlet obstruction on enrollment
- Patients with postvoid residual > 150ml
- Patients with uncontrolled confirmed diagnosis of acute urinary tract infection
- Patients have laboratory abnormalities at screening including:
Show all 13Show fewer
- Alanine aminotransferase (ALT)> 3 x upper limit of normal range
- Aspartate aminotransferase (AST)> 3 x upper limit of normal range
- Patients have abnormal serum creatinine level > 2 x upper limit of normal range
- Patients with any contraindication to be urethral catheterization during treatment
- Female patients who is pregnant, lactating, or with child-bearing potential without contraception.
- Myasthenia gravis, Eaton Lambert syndrome.
- Patients with any other serious disease considered by the investigator not suitable for general anesthesia or in the condition to enter the trial Patients participated investigational drug trial within 1 month before entering this study
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Comparison of the Therapeutic Effects of Different Injection Number of the Same Dose of Botulinum Toxin A on Overactive Bladder Syndrome
Overactive bladder (OAB) is a symptom syndrome characterized by urgency frequency with or without urge urinary incontinence (UUI) that may affect the patients' quality of life. Current medical treatments are usually unsuccessful in completely eradicating urgency sensation. Intra-detrusor injection of botulinum toxin A (BoNT-A) modulates the release of neurotransmitters from sensory nerve endings and effectively modulates the inflammatory process mediated by nociceptive afferent nerve dysfunction. Satisfactory clinical results were achieved with intravesical BoNT-A injection, which increased bladder capacity and decreased urgency sensation in patients with neurogenic or idiopathic detrusor overactivity (NDO, IDO). Excellent results were achieved with injection of either 100 U or 200 U of BoNT-A. Episodes of frequency, urgency, and UUI were reduced, maximal cystometric capacity increased, maximal detrusor pressure (Pdet) decreased, and the quality of life index also improved significantly. However, post void residual (PVR) volume increased significantly and some patients required clean intermittent catheterization (CIC) to evacuate the PVR. Dose-related adverse events (AE) increased with increasing dose of BoNT-A. Therefore, adjustments of the BoNT-A dose and sites of injection might minimize the de novo AE and help to maintain success rates.
Read the detailed description
This study was designed as a single blind, randomized, parallel, actively controlled trial. The urodynamic DO confirmed patients were randomly assigned to receive injection of onabotulinumtoxinA 100 U (BoNT-A, Allergan, Irvine, California, USA), which was reconstituted to 10 ml with normal saline for suburothelial injections, in one of the three groups with the following injection number: (A) 100 U in 10ml injections, 1.0ml for each injection, totally 10 injections at bladder body (B) 100 U in 10ml, 0.5ml for each injection, totally 20 injections at bladder body, (C) 100 U in 10ml, 0.25ml for each injection, totally 40 injections at bladder body. Permuted block randomization was used for this trial. All treatments were evaluated at baseline and the primary end-point at 3 months.
The inclusion criteria were patients of either gender, aged 20 years or more, with urodynamic DO and at least one episode of urgency (urgency severity scale, USS≥2) or UUI per day as recorded in the 3-day voiding diary. Patients with neurogenic bladder, urodynamically confirmed bladder outlet obstruction, prior pelvic surgery, anti-incontinence surgery or urinary tract infection (UTI, white blood cell(WBC)>10/high power field (HPF) in urinalysis) were excluded. Informed consent was obtained from all patients before randomization. This study should be approved by the Institution Review Board and Ethics Committee of the hospital.
All patients had been managed with behavioral modification and treated with a certain number of antimuscarinics for more than 4 weeks before they were enrolled into this trial. Antimuscarinics was discontinued on the day of screening to wash out the remaining effect and obtaining a voiding diary that may reflect the true bladder condition.
The injection method for each patient was not recorded in the operation note and the study nurse who controlled the outcome measures was blinded to the treatment assignment. All procedures were performed transurethrally under intravenous general anesthesia in the operation room. Anticoagulant was discontinued 1 week prior to onabotulinumtoxinA treatment. The bladder volume was kept at 100-150 ml and the blood vessels were avoided during injections. An indwelling Foley catheter was placed in the bladder overnight and the patients were discharged the next morning. Broad-spectrum prophylactic antibiotics were given postoperatively for 3 days. Patients who developed acute urinary retention (AUR) or PVR volumes greater than 250 ml were advised to perform CIC periodically to evacuate their bladders. The patients were monitored at the outpatient clinic regularly for upto 24 months until symptoms returned to baseline levels.
Videourodynamic study was routinely performed at baseline, 3 and 6 months to measure urodynamic variables and detecting vesicoureteral reflux. The measured urodynamic variables included: maximum flow rate (Qmax), PVR, cystometric bladder capacity (CBC), detrusor pressure at Qmax (Pdet) and voiding efficiency (VE). The procedure and definition of videourodynamic study were in accordance of the recommendations of the International Continence Society.
- Conditions
- Overactive Bladder
- Being tested
- BoNT-A (10 injection), BoNT-A (20 injection), BoNT-A (40 injection)
- Keywords
- botulinum toxin, detrusor overactivity
- Medical subject headings
- Urinary Bladder, Overactive
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BoNT-A (10 injection)Drug
Also called Botulinum Toxin A (Botox)
BoNT-A 100 U 10 injections
BoNT-A (20 injection)Drug
Also called Botulinum Toxin A (Botox)
BoNT-A 100 U 20 injections
BoNT-A (40 injection)Drug
Also called Botulinum Toxin A (Botox)
BoNT-A 100 U 40 injections
| Study group | Role | What they receive |
|---|---|---|
| BoNT-A (10 injection) | Experimental | 100 U in 10ml, 1.0ml for each injection, totally 10 injections at bladder body Receives: Drug: BoNT-A (10 injection) |
| BoNT-A (20 injections) | Experimental | 100 U in 10ml, 0.5ml for each injection, totally 20 injections at bladder body Receives: Drug: BoNT-A (20 injection) |
| BoNT-A (40 injections) | Experimental | 100 U in 10ml, 0.25ml for each injection, totally 40 injections at bladder body Receives: Drug: BoNT-A (40 injection) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Global response assessment (GRA) of satisfaction by the patient
GRA (-3, -2, -1, 0, +1, +2, +3) of satisfaction by the patient
- GRA≥+1: Respond
- GRA≤0: Non-respond
Measured: 2 weeks after initial treatment
Secondary outcomes (1)
Voiding and urodynamic parameters
- Overactive bladder symptom score (OABSS)
- Urgency severity score (USS)
- Urgency urinary incontinence (UUI)/3 days
- Urodynamic parameters
- Functional bladder capacity (FBC)
- Maximum flow rate (Qmax)
- Postvoid residual volume (PVR)
Measured: 2 weeks after the initial treatment day
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Aug 2012 (estimated)
- Study startAug 2012
- Primary completionJun 2014
- Study completionJun 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (55)Papers the sponsor has linked to this study.
- Other trials for Overactive BladderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Patients were randomized to receive different injection number of onabotulinumtoxinA
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 90 participants (actual)
Sponsor and investigators
- Lead sponsor
- Buddhist Tzu Chi General Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hann-Chorng Kuo, Buddhist Tzu Chi General Hospital
- Investigators
- Hann-Chorng Kuo, M.D., Principal investigator, Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01657409
- Sponsor's protocol ID
- TCGHUROL003
- Status last verified
- Feb 2017
- First submitted
- 2 Aug 2012
- Last updated
- 15 Feb 2017
- Results posted
- No
- Data monitoring committee
- No
Publications
Abrams P, Kelleher CJ, Kerr LA, Rogers RG. Overactive bladder significantly affects quality of life. Am J Manag Care. 2000 Jul;6(11 Suppl):S580-90.
PubMed 11183901Irwin DE, Milsom I, Kopp Z, Abrams P, Cardozo L. Impact of overactive bladder symptoms on employment, social interactions and emotional well-being in six European countries. BJU Int. 2006 Jan;97(1):96-100. doi: 10.1111/j.1464-410X.2005.05889.x.
PubMed 16336336Milsom I, Abrams P, Cardozo L, Roberts RG, Thuroff J, Wein AJ. How widespread are the symptoms of an overactive bladder and how are they managed? A population-based prevalence study. BJU Int. 2001 Jun;87(9):760-6. doi: 10.1046/j.1464-410x.2001.02228.x.
PubMed 11412210Chen GD, Lin TL, Hu SW, Chen YC, Lin LY. Prevalence and correlation of urinary incontinence and overactive bladder in Taiwanese women. Neurourol Urodyn. 2003;22(2):109-17. doi: 10.1002/nau.10010.
PubMed 12579627Homma Y, Yamaguchi O, Hayashi K; Neurogenic Bladder Society Committee. An epidemiological survey of overactive bladder symptoms in Japan. BJU Int. 2005 Dec;96(9):1314-8. doi: 10.1111/j.1464-410X.2005.05835.x.
PubMed 16287452Kullmann FA, Artim DE, Birder LA, de Groat WC. Activation of muscarinic receptors in rat bladder sensory pathways alters reflex bladder activity. J Neurosci. 2008 Feb 20;28(8):1977-87. doi: 10.1523/JNEUROSCI.4694-07.2008.
PubMed 18287514Mukerji G, Yiangou Y, Grogono J, Underwood J, Agarwal SK, Khullar V, Anand P. Localization of M2 and M3 muscarinic receptors in human bladder disorders and their clinical correlations. J Urol. 2006 Jul;176(1):367-73. doi: 10.1016/S0022-5347(06)00563-5.
PubMed 16753445Ouslander JG. Management of overactive bladder. N Engl J Med. 2004 Feb 19;350(8):786-99. doi: 10.1056/NEJMra032662. No abstract available.
PubMed 14973214Dumoulin C, Hay-Smith J. Pelvic floor muscle training versus no treatment for urinary incontinence in women. A Cochrane systematic review. Eur J Phys Rehabil Med. 2008 Mar;44(1):47-63.
PubMed 18385628Simpson LL. Kinetic studies on the interaction between botulinum toxin type A and the cholinergic neuromuscular junction. J Pharmacol Exp Ther. 1980 Jan;212(1):16-21.
PubMed 6243359Apostolidis A, Popat R, Yiangou Y, Cockayne D, Ford AP, Davis JB, Dasgupta P, Fowler CJ, Anand P. Decreased sensory receptors P2X3 and TRPV1 in suburothelial nerve fibers following intradetrusor injections of botulinum toxin for human detrusor overactivity. J Urol. 2005 Sep;174(3):977-82; discussion 982-3. doi: 10.1097/01.ju.0000169481.42259.54.
PubMed 16094018Aoki KR. Evidence for antinociceptive activity of botulinum toxin type A in pain management. Headache. 2003 Jul-Aug;43 Suppl 1:S9-15. doi: 10.1046/j.1526-4610.43.7s.3.x.
PubMed 12887389Yiangou Y, Facer P, Ford A, Brady C, Wiseman O, Fowler CJ, Anand P. Capsaicin receptor VR1 and ATP-gated ion channel P2X3 in human urinary bladder. BJU Int. 2001 Jun;87(9):774-9. doi: 10.1046/j.1464-410x.2001.02190.x.
PubMed 11412212Avelino A, Cruz F. TRPV1 (vanilloid receptor) in the urinary tract: expression, function and clinical applications. Naunyn Schmiedebergs Arch Pharmacol. 2006 Jul;373(4):287-99. doi: 10.1007/s00210-006-0073-2. Epub 2006 May 24.
PubMed 16721555Popat R, Apostolidis A, Kalsi V, Gonzales G, Fowler CJ, Dasgupta P. A comparison between the response of patients with idiopathic detrusor overactivity and neurogenic detrusor overactivity to the first intradetrusor injection of botulinum-A toxin. J Urol. 2005 Sep;174(3):984-9. doi: 10.1097/01.ju.0000169480.43557.31.
PubMed 16094019
Study at a glance
From the registry record, last updated by the sponsor on 15 Feb 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of the Therapeutic Effects of Different Injection Number of the Same Dose of Botulinum Toxin A on Overactive Bladder Syndrome
- ClinicalTrials.gov ID
- NCT01657409
- Acronym / sponsor ID
- TCGHUROL003
- Conditions
- Overactive Bladder
- Keywords
- botulinum toxin, detrusor overactivity
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 90 participants (actual)
- Lead sponsor
- Buddhist Tzu Chi General HospitalUniversity, hospital or other
- Study start
- Aug 2012 (actual)
- Primary completion
- Jun 2014 (actual)
- Study completion
- Jun 2014 (actual)
- First posted
- 6 Aug 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Overactive bladder (OAB) is a symptom syndrome characterized by urgency frequency with or without urge urinary incontinence (UUI) that may affect the patients' quality of life. Current medical treatments are usually unsuccessful in completely eradicating urgency sensation. Intra-detrusor injection of botulinum toxin A (BoNT-A) modulates the release of neurotransmitters from sensory nerve endings and effectively modulates the inflammatory process mediated by nociceptive afferent nerve dysfunction. Satisfactory clinical results were achieved with intravesical BoNT-A injection, which increased bladder capacity and decreased urgency sensation in patients with neurogenic or idiopathic detrusor overactivity (NDO, IDO). Excellent results were achieved with injection of either 100 U or 200 U of BoNT-A. Episodes of frequency, urgency, and UUI were reduced, maximal cystometric capacity increased, maximal detrusor pressure (Pdet) decreased, and the quality of life index also improved significantly. However, post void residual (PVR) volume increased significantly and some patients required clean intermittent catheterization (CIC) to evacuate the PVR. Dose-related adverse events (AE) increased with increasing dose of BoNT-A. Therefore, adjustments of the BoNT-A dose and sites of injection might minimize the de novo AE and help to maintain success rates.
Detailed description
This study was designed as a single blind, randomized, parallel, actively controlled trial. The urodynamic DO confirmed patients were randomly assigned to receive injection of onabotulinumtoxinA 100 U (BoNT-A, Allergan, Irvine, California, USA), which was reconstituted to 10 ml with normal saline for suburothelial injections, in one of the three groups with the following injection number: (A) 100 U in 10ml injections, 1.0ml for each injection, totally 10 injections at bladder body (B) 100 U in 10ml, 0.5ml for each injection, totally 20 injections at bladder body, (C) 100 U in 10ml, 0.25ml for each injection, totally 40 injections at bladder body. Permuted block randomization was used for this trial. All treatments were evaluated at baseline and the primary end-point at 3 months.
The inclusion criteria were patients of either gender, aged 20 years or more, with urodynamic DO and at least one episode of urgency (urgency severity scale, USS≥2) or UUI per day as recorded in the 3-day voiding diary. Patients with neurogenic bladder, urodynamically confirmed bladder outlet obstruction, prior pelvic surgery, anti-incontinence surgery or urinary tract infection (UTI, white blood cell(WBC)>10/high power field (HPF) in urinalysis) were excluded. Informed consent was obtained from all patients before randomization. This study should be approved by the Institution Review Board and Ethics Committee of the hospital.
All patients had been managed with behavioral modification and treated with a certain number of antimuscarinics for more than 4 weeks before they were enrolled into this trial. Antimuscarinics was discontinued on the day of screening to wash out the remaining effect and obtaining a voiding diary that may reflect the true bladder condition.
The injection method for each patient was not recorded in the operation note and the study nurse who controlled the outcome measures was blinded to the treatment assignment. All procedures were performed transurethrally under intravenous general anesthesia in the operation room. Anticoagulant was discontinued 1 week prior to onabotulinumtoxinA treatment. The bladder volume was kept at 100-150 ml and the blood vessels were avoided during injections. An indwelling Foley catheter was placed in the bladder overnight and the patients were discharged the next morning. Broad-spectrum prophylactic antibiotics were given postoperatively for 3 days. Patients who developed acute urinary retention (AUR) or PVR volumes greater than 250 ml were advised to perform CIC periodically to evacuate their bladders. The patients were monitored at the outpatient clinic regularly for upto 24 months until symptoms returned to baseline levels.
Videourodynamic study was routinely performed at baseline, 3 and 6 months to measure urodynamic variables and detecting vesicoureteral reflux. The measured urodynamic variables included: maximum flow rate (Qmax), PVR, cystometric bladder capacity (CBC), detrusor pressure at Qmax (Pdet) and voiding efficiency (VE). The procedure and definition of videourodynamic study were in accordance of the recommendations of the International Continence Society.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
- Model description
- Patients were randomized to receive different injection number of onabotulinumtoxinA
| Arm | Type | Receives |
|---|---|---|
| BoNT-A (10 injection) | Experimental | Drug: BoNT-A (10 injection)100 U in 10ml, 1.0ml for each injection, totally 10 injections at bladder body |
| BoNT-A (20 injections) | Experimental | Drug: BoNT-A (20 injection)100 U in 10ml, 0.5ml for each injection, totally 20 injections at bladder body |
| BoNT-A (40 injections) | Experimental | Drug: BoNT-A (40 injection)100 U in 10ml, 0.25ml for each injection, totally 40 injections at bladder body |
Who may qualify
- Ages
- 20 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- The inclusion criteria were patients of either gender, aged 20 years or more, with urodynamic DO and at least one episode of urgency (urgency severity scale, USS≥2) or UUI per day as recorded in the 3-day voiding diary. Patients with neurogenic bladder, urodynamically confirmed bladder outlet obstruction, prior pelvic surgery, anti-incontinence surgery or urinary tract infection (UTI, white blood cell (WBC) >10/high power field (HPF) in urinalysis) were excluded. Informed consent was obtained from all patients before randomization. This study should be approved by the Institution Review Board and Ethics Committee of the hospital.
Key exclusion criteria (13 listed)
- Use of antimuscarinic agent and effective in treatment of lower urinary tract symptoms
- Patients with severe cardiopulmonary disease and such as congestive heart failure, arrhythmia, poorly controlled hypertension, not able to receive regular follow-up
- Patients with bladder outlet obstruction on enrollment
- Patients with postvoid residual > 150ml
- Patients with uncontrolled confirmed diagnosis of acute urinary tract infection
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| BoNT-A (10 injection)Also: Botulinum Toxin A (Botox)BoNT-A 100 U 10 injections | Drug | BoNT-A (10 injection) |
| BoNT-A (20 injection)Also: Botulinum Toxin A (Botox)BoNT-A 100 U 20 injections | Drug | BoNT-A (20 injections) |
| BoNT-A (40 injection)Also: Botulinum Toxin A (Botox)BoNT-A 100 U 40 injections | Drug | BoNT-A (40 injections) |
Primary outcome
Global response assessment (GRA) of satisfaction by the patient
Time frame: 2 weeks after initial treatment
GRA (-3, -2, -1, 0, +1, +2, +3) of satisfaction by the patient * GRA≥+1: Respond * GRA≤0: Non-respond
1 secondary outcome
Voiding and urodynamic parameters
Time frame: 2 weeks after the initial treatment day
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Feb 2017.
- Background: PubMed 11183901Abrams P, Kelleher CJ, Kerr LA, Rogers RG. Overactive bladder significantly affects quality of life. Am J Manag Care. 2000 Jul;6(11 Suppl):S580-90.
- Background: PubMed 16336336Irwin DE, Milsom I, Kopp Z, Abrams P, Cardozo L. Impact of overactive bladder symptoms on employment, social interactions and emotional well-being in six European countries. BJU Int. 2006 Jan;97(1):96-100. doi: 10.1111/j.1464-410X.2005.05889.x.
- Background: PubMed 11412210Milsom I, Abrams P, Cardozo L, Roberts RG, Thuroff J, Wein AJ. How widespread are the symptoms of an overactive bladder and how are they managed? A population-based prevalence study. BJU Int. 2001 Jun;87(9):760-6. doi: 10.1046/j.1464-410x.2001.02228.x.
- Background: PubMed 12579627Chen GD, Lin TL, Hu SW, Chen YC, Lin LY. Prevalence and correlation of urinary incontinence and overactive bladder in Taiwanese women. Neurourol Urodyn. 2003;22(2):109-17. doi: 10.1002/nau.10010.
- Background: PubMed 16287452Homma Y, Yamaguchi O, Hayashi K; Neurogenic Bladder Society Committee. An epidemiological survey of overactive bladder symptoms in Japan. BJU Int. 2005 Dec;96(9):1314-8. doi: 10.1111/j.1464-410X.2005.05835.x.
- Background: PubMed 18287514Kullmann FA, Artim DE, Birder LA, de Groat WC. Activation of muscarinic receptors in rat bladder sensory pathways alters reflex bladder activity. J Neurosci. 2008 Feb 20;28(8):1977-87. doi: 10.1523/JNEUROSCI.4694-07.2008.
- Background: PubMed 16753445Mukerji G, Yiangou Y, Grogono J, Underwood J, Agarwal SK, Khullar V, Anand P. Localization of M2 and M3 muscarinic receptors in human bladder disorders and their clinical correlations. J Urol. 2006 Jul;176(1):367-73. doi: 10.1016/S0022-5347(06)00563-5.
- Background: PubMed 14973214Ouslander JG. Management of overactive bladder. N Engl J Med. 2004 Feb 19;350(8):786-99. doi: 10.1056/NEJMra032662. No abstract available.
- Background: PubMed 18385628Dumoulin C, Hay-Smith J. Pelvic floor muscle training versus no treatment for urinary incontinence in women. A Cochrane systematic review. Eur J Phys Rehabil Med. 2008 Mar;44(1):47-63.
- Background: PubMed 6243359Simpson LL. Kinetic studies on the interaction between botulinum toxin type A and the cholinergic neuromuscular junction. J Pharmacol Exp Ther. 1980 Jan;212(1):16-21.
- Background: PubMed 16094018Apostolidis A, Popat R, Yiangou Y, Cockayne D, Ford AP, Davis JB, Dasgupta P, Fowler CJ, Anand P. Decreased sensory receptors P2X3 and TRPV1 in suburothelial nerve fibers following intradetrusor injections of botulinum toxin for human detrusor overactivity. J Urol. 2005 Sep;174(3):977-82; discussion 982-3. doi: 10.1097/01.ju.0000169481.42259.54.
- Background: PubMed 12887389Aoki KR. Evidence for antinociceptive activity of botulinum toxin type A in pain management. Headache. 2003 Jul-Aug;43 Suppl 1:S9-15. doi: 10.1046/j.1526-4610.43.7s.3.x.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Hann-Chorng Kuo, M.D. principal investigator
Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing BoNT-A (10 injection), BoNT-A (20 injection) and BoNT-A (40 injection) in people with Overactive Bladder, run by Buddhist Tzu Chi General Hospital at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 15 Feb 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Global response assessment (GRA) of satisfaction by the patient (time frame: 2 weeks after initial treatment). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01657409, which also lists 55 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Feb 2017.