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Phase 1 Study With OAB Assessing the Safety and Activity of hMaxi-K Gene Transfer

U

Urovant Sciences

Status and phase

Completed
Phase 1

Conditions

Overactive Bladder

Treatments

Drug: hMaxi-K
Drug: Placebo (PBS-20% sucrose)

Study type

Interventional

Funder types

Industry

Identifiers

NCT01870037
ION 03-OAB

Details and patient eligibility

About

The primary objective of this study is to evaluate the safety of a single treatment of hMaxi-K compared to placebo (PBS-20% sucrose) administered by direct bladder wall injections. Two dose levels (16000 µg and 24000 µg; 20 or 30 bladder wall injections, respectively) in females with moderate Overactive Bladder/Detrusor overactivity (OAB/DO) of ≥6 months duration will be evaluated. In each dose level, 6 participants will receive hMaxi-K and 3 will receive placebo.

Full description

This is a Phase 1 double-blind, placebo-controlled study assessing the safety and activity of 2 escalating doses of hMaxi-K gene transfer by direct injection into the bladder wall in female participants with OAB/DO.

The safety parameters to be monitored include: adverse events, clinical laboratory tests, electrocardiograms, and physical examinations.

The secondary objective is to evaluate the efficacy of multiple intramuscular injections of hMaxi-K compared to the control group. Efficacy parameters that will be evaluated are: number of micturitions per 24 hours, volume per micturition, incontinence episodes, pad weight measurement of accidental bladder leaks, uninhibited contractions during cystoscopy and other cystoscopic evaluations, and general and bladder-specific quality of life assessments (Kings Health Questionnaire, SF-12 Health Survey, and International Consultation on Incontinence Questionnaire [ICIQ-SF]).

Enrollment

13 patients

Sex

Female

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Healthy women of ≥18 years of age and non-childbearing potential

  2. Symptoms of overactive bladder for ≥6 months including at least one of the following:

    1. Frequent micturition ≥8 times per 24 hours
    2. Urinary urgency or nocturia
    3. Urge urinary incontinence five or more incontinence episodes per week
  3. Detrusor overactivity with ≥1 uncontrolled phasic contraction(s) of the detrusor of at least 5 centimeters/H20 pressure documented on cystometry at Screening Visit 1A

  4. Residual urine volume of ≤200 milliliters (ml)

  5. Non-response or poor tolerance to previous treatment for symptoms of OAB/urinary incontinence and do not wish to continue these treatments

  6. Have screening laboratory values and electrocardiogram that are within the normal range

  7. Able to understand study requirements (i.e., literate in English), give written informed consent, and comply with all study procedures and requirements.

Exclusion criteria

  • A woman with a positive serum (HCG) pregnancy test or who is lactating
  • History of three or more culture-documented recurrent urinary tract infections per year
  • Current history or previous diagnosis of painful bladder syndrome (interstitial cystitis) with pain in the region of the pelvis, perineum, or lower abdomen relieved by voiding
  • Current history of neurological bladder dysfunction
  • A life expectancy of less than 12 months
  • Current history of Grade 2 or greater cystocele
  • An indwelling urethral catheter or need for clean intermittent self-catheterization
  • Recent heart attack
  • Uncontrolled diabetes
  • Latex allergy
  • Stress urinary incontinence as determined by observation of the participant coughing while standing with a full bladder and/or response of 2 or 3 on the following Stress Urinary Incontinence question: Do you experience leakage when laughing, coughing, lifting heavy objects or other types of discreet, moderately intense activities? 0=NONE: No leakage. 1=MILD: Minimal leakage on rare occasions during these types of activities; easily tolerated; do not use pads for this. 2=MODERATE: Enough leakage that it requires occasional use of pads and may interfere with usual activity and tasks. 3=SEVERE: Extreme leakage and discomfort that stops all activity and tasks and requires the use of pads on all occasions

Trial design

Primary purpose

Other

Allocation

Randomized

Interventional model

Sequential Assignment

Masking

Triple Blind

13 participants in 3 patient groups, including a placebo group

Placebo (PBS-20% sucrose)
Placebo Comparator group
Description:
PBS-20% sucrose administered during two single-treatment dose levels (16000 micrograms \[µg\] and 24000 µg) by direct bladder wall intramuscular injections, 20 to 30 injections depending on active dose comparator.
Treatment:
Drug: Placebo (PBS-20% sucrose)
hMaxi-K 16000 µg
Experimental group
Description:
Single treatment (16000 µg by 20 intramuscular injections). A total of 6 participants will receive hMaxi-K, and 3 will receive placebo.
Treatment:
Drug: hMaxi-K
hMaxi-K 24000 µg
Experimental group
Description:
Single treatment (24000 µg by 30 intramuscular injections). A total of 6 participants will receive hMaxi-K, and 3 will receive placebo.
Treatment:
Drug: hMaxi-K

Trial documents
3

Trial contacts and locations

3

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Data sourced from clinicaltrials.gov

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