OnabotulinumtoxinA (onaBoNT-A) Versus Oral Oxybutynin ER
OnabotulinumtoxinA (onaBoNT-A) Versus Oral Oxybutynin ER
Overactive bladder is a condition associated with symptoms of feeling the urge to urinate,
 urinating often, and may or may not be accompanied by leakage of urine. A patient who has a
 spinal cord injury (SCI) often suffers from an overactive bladder which often leads to
 urinary incontinence (UI - an unwanted leakage of urine).

 OnaBoNT-A bladder injections have been studied in clinical research trials. The results have
 shown an improvement in urinary symptoms by reducing how often urine leakage occurs and by
 increasing the amount of urine the bladder can hold.

 This purpose of this clinical trial is to see if onaBoNT-A is safe and effective when
 injected into the bladder for the treatment of UI and if it works better than a drug that is
 taken by mouth. A second purpose of the study is to perform research tests on the urine
 samples provided by the volunteers. Urine presents a rich source of information for bladder
 diseases and the biomarkers (the chemical make-up of the urine cells) will be examined to
 learn if there are yet undiscovered reasons for urinary diseases. These tests would be very
 beneficial because the results would lead to better treatment of the urinary diseases.

 Volunteers will be randomized to either: ARM 1: onaBoNT-A 200 U bladder injection and placebo
 oral capsule daily or ARM 2: Placebo bladder injection (saline) and oxybutynin ER 10mg
 capsule twice a day.

 The treatments are onaBoNT-A bladder injection and a placebo oral capsule once a day or
 placebo bladder injection and oxybutynin ER (like Ditropan) capsule twice a day. Placebo
 contains no active medicine. Participation in this study will be about 6-7 months and involve
 5 visits to the clinic. The risks of bladder onaBoNT-A
Current treatment of neurogenic bladder dysfunction (NGB) is limited by the suboptimal
 results achieved using standard antimuscarinic agents. A prominent role for the actions of
 alternative transmitters/growth factors in peripheral micturition pathways is emerging from
 the growing number of pharmacologic and localization studies in humans. For example, recently
 published data demonstrates a significant increased expression of Nerve Growth Factor and
 chemokine/cytokine levels in patients with detrusor overactivity and NGB. Treatment with
 onabotulinumtoxinA (onaBoNT-A) not only was shown to reduce detrusor overactivity and improve
 urinary symptoms but also significantly reduced tissue and urine levels of factors such as
 NGF. Up to this point, no study has directly compared the effects of front-line therapy of
 antimuscarinic agents versus onaBoNT-A on urinary symptoms in patients with NGB resulting
 from spinal cord injury (SCI). In addition, no investigation has examined the effects that
 antimuscarinic agents or onaBoNT-A have on urinary levels of NGF and chemokines/cytokines,
 whether changes in urinary levels predict a clinical response or a return in symptoms, and if
 changes in urinary levels predate changes in clinical response.

 Access to selective and reliable urine testing of NGF and chemokines/cytokines provides the
 unique opportunity to assess the impact that modulating these agents has on bladder function.
 The main purpose of this proposal is to incorporate novel urine biomarker testing into
 existing clinical methodologies in order to: 1) evaluate the safety and efficacy of 200 U
 onaBoNT-A injected into the detrusor versus oral oxybutynin for the treatment of urinary
 incontinence (UI) caused by neurogenic detrusor overactivity (NDO) in spinal cord injured
 patients and 2) to determine the potential role of urine biomarkers in guiding the process of
 patient selection and identify surrogate predictors of treatment outcomes.

 This will be a double-blind, randomized, placebo-controlled, parallel-group study to assess
 the safety and efficacy of onaBoNT-A or 10 mg twice a day of oral oxybutynin hydrocholoride
 in spinal cord injured patients diagnosed with neurogenic detrusor overactivity.

 Volunteers will include both males and females with spinal cord injuries who are 18 to 80
 years of age.

 Volunteers will be randomized using a blocked randomization approach to either:

 ARM 1: onaBoNT-A 200 U bladder injection and placebo oral capsule daily or

 ARM 2: Placebo bladder injection (saline) and oxybutynin ER 10mg capsule twice a day.

 Subjects will be randomized into one of the two treatment arms, using a block size of 4. The
 order in which the treatments are assigned in each block is randomized and this process is
 repeated for consecutive blocks of subjects until all subjects are randomized. This process
 ensures that after every fourth randomized subject, the number of subjects in each treatment
 group is equal.

 There will be five study visits over approximately 6-7 months.

 The significance of these experiments begins with the fact that our proposed intervention is
 the first randomized clinical trial comparing the effects of onaBoNT-A (onabotulinumtoxinA)
 bladder injection versus anticholinergic medication for detrusor hyperreflexia (DH). In
 addition, this is the first study profiling urine levels of the signaling protein nerve
 growth factor (NGF) and chemokines/cytokines as possible bio-markers of bladder overactivity
 in patients with neurogenic detrusor overactivity. Finally, this is the only study to date
 comparing the effects that onaBoNT-A or anticholinergic medications have on urine NGF and
 chemokine/cytokine levels. If our hypotheses prove to be correct, the significance to
 treating patients with spinal cord injury with botulinum toxin A will be less incontinence,
 the requirement of lower doses or avoidance of anticholinergic medication and its associated
 side effects, and the ability to prevent the complications of DH/DESD (Detrusor-External
 Sphincter Dyssynergia) including urinary tract infections, decubiti, and impairment of
 quality of life. Although this study as written is of moderate length (i.e. total 4 years),
 we hope that by finding significant results, we will be able to capture a longitudinal
 history of this population by extending follow-up to a longer duration (i.e. over 10 years).
Inclusion Criteria:

 -  male or female, aged 18 to 80 years old, weighing 110 pounds or more.

 -  urinary incontinence as a result of neurogenic detrusor overactivity for a period of
 at least 3 months prior to screening as a result of spinal cord injury

 -  must have a stable neurological injury occurring at least 6 months or more.

 -  has detrusor overactivity demonstrated during the screening period or within 1 year of
 screening.

 -  has a negative pregnancy result if female and of childbearing potential.

 The following criteria are also required for entry into the study at Randomization/Day 1:

 -  experiences at least 14 episodes or more of urinary incontinence per week with no more
 than 2 incontinent-free days.

 -  currently uses or is willing to use clean intermittent catheterization (CIC) to empty
 the bladder (indwelling catheter is not permitted).

 -  Volunteers with a negative urine culture result must take an antibiotic medication for
 3 days immediately prior to Randomization/Day 1 and agree to continue antibiotic
 medication for at least 3 days following treatment. Volunteers with a positive urine
 culture result indicating urinary tract infection (UTI), must take an antibiotic to
 which the identified organism is sensitive for at least 3 days immediately prior to
 Randomization/Day 1, on Randomization/Day 1, and continue for 3 days following the
 procedure (or longer as needed).

 Exclusion Criteria:

 -  has history or evidence of any pelvic or urological abnormalities including but not
 limited to the following:

 1. elevated serum creatinine more than 2 times the upper limit of normal (reference
 range)

 2. current or history of hematuria, 1) if the hematuria is determined to be a
 pathologic condition or 2) is uninvestigated

 3. interstitial cystitis in the opinion of the investigator bladder stones within 6
 months of screening

 4. surgery or bladder disease other than detrusor overactivity that may impact
 bladder function with the exception of surgeries for bladder stones (more than 6
 months) and stress incontinence, uterine prolapse, rectocele, or cystocele (more
 than1year) from screening.

 -  has had previous or current botulinum toxin therapy within 9 months.

 -  has been immunized for any botulinum toxin serotype.

 -  discontinued anticholinergic medication for overactive bladder less than 14 days prior
 to Randomization/Day 1.

 -  has a history or current diagnosis of bladder cancer.

 -  male with previous or current diagnosis of prostate cancer or has a Prostate Specific
 Antigen (PSA) level greater than 10.0 ng/mL.

 -  has 24 hour total volume voided more than 3000 mL of urine

 -  has a post void residual volume above 200 mL.

 -  has an active genital infection, other than genital warts, either concurrently or
 within 4 weeks prior to screening.

 -  uses any anti-platelet or anticoagulant therapy or is using medications with
 anticoagulative effects within 3 days prior to treatment.

 -  has hemophilia or other clotting factor deficiencies or disorders that cause bleeding
 diatheses.

 -  has had concurrent treatment or treatment within 6 months of Randomization/Day 1 with
 capsaicin or resiniferatoxin.

 -  currently using or plans to use an implanted or non-implantable electrostimulation/
 neuromodulation device for treatment of overactive bladder.

 -  has a known allergy or sensitivity to any components of the study medication,
 anesthetics or antibiotics or any other products associated with the treatment and
 general study procedures.

 -  has any medical condition that may put the volunteer at increased risk with exposure
 to onaBoNT-A including diagnosed myasthenia gravis, Eaton-Lambert syndrome or
 amyotrophic lateral sclerosis.

 -  female and pregnant, nursing or planning a pregnancy during the study, or of
 childbearing potential and unable or unwilling to use a reliable form of contraception
 during the study.

 -  currently or has previously participated in another therapeutic drug or device study
 within 30 days of screening.