Detrusor Nerve Radiofrequency Ablation for Overactive Bladder in Women: A Randomized Controlled Trial (DENARA)
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About
The goal of this clinical trial is to learn if a vaginal radiofrequency (RF) device called MORPHEUSV works to treat overactive bladder (OAB) in women. Researchers also want to learn how safe the device is for this indication. This study will include women ages 22 to 80 who have had OAB symptoms for at least 6 months. The main questions it aims to answer are: Does the MORPHEUSV device lower the number of daily episodes of accidental urine leakage caused by urgency? Does it work better than a sham (placebo) treatment? Researchers will compare the MORPHEUSV device to a sham treatment to see how well it reduces symptoms of overactive bladder. Participants will: 1) Receive one session of either the MORPHEUSV or sham treatment. 2) Track their symptoms using a diary and questionnaires 3) Return for three to six follow-up visits over 12 months. This study is being conducted at multiple clinics in the United States.
Full description
Overactive bladder (OAB) is a common condition that significantly impacts the quality of life in women, especially those with urge urinary incontinence (UUI) or mixed incontinence with a predominant urgency component. Current treatments for OAB, including behavioral therapy and pharmacologic agents, often have limited long-term efficacy, tolerability issues, or low adherence rates. There is a significant need for alternative, non-invasive therapies that can provide symptom relief with fewer side effects. The MORPHEUSV system is a vaginally delivered radiofrequency (RF) energy device designed to remodel submucosal tissue through controlled thermal stimulation. This technology is currently being investigated for its ability to improve bladder control by targeting pelvic tissue support and neuromodulation pathways. The device is investigational for this indication and is being studied under an FDA-approved Investigational Device Exemption (IDE G250071). This is a prospective, randomized, multicenter, double-blind, sham-controlled clinical trial designed to evaluate the safety and efficacy of the MORPHEUSV RF device in women aged 22 to 80 with idiopathic OAB and at least 7 episodes of UUI per week. The study will enroll approximately 202 participants at up to 12 sites across the United States. Participants will be randomized 2:1 to either a single session of active RF treatment or a sham (placebo) treatment. The primary outcome is the proportion of participants achieving a ≥50% reduction in UUI episodes from baseline at 6 months. Secondary and exploratory outcomes include symptom reduction across urgency, frequency, nocturia, and quality of life metrics, as well as device-related adverse events. Blinding will be maintained through the use of an identical sham applicator with no RF energy delivery. A crossover option is available for sham subjects who complete the 6-month follow-up, allowing them to receive the active treatment. All participants will be followed for 12 months after their initial intervention to evaluate durability of response and long-term safety. An internal data review committee will periodically evaluate cumulative safety data. The study is conducted under Good Clinical Practice (GCP) guidelines and will be overseen by Sterling IRB.
Enrollment
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Volunteers
Inclusion criteria
- Female, aged 22 to 80 years inclusive at the time of consent.
- History of idiopathic overactive bladder (OAB) symptoms for ≥6 months.
- At least 7 episodes of urge urinary incontinence (UUI) over 3 days, as recorded in a 3-day bladder diary during screening.
- Urge-predominant incontinence, defined as greater number of UUI episodes than stress urinary incontinence (SUI) episodes during screening.
- Willing and able to complete the 3-day bladder diary.
- Willing to discontinue OAB medications (e.g., anticholinergics, beta-3 agonists) at least 2 weeks prior to baseline treatment visit, if currently taking such medications.
- Willing to use a reliable method of contraception during the study period, if of childbearing potential and sexually active.
- Negative pregnancy test at screening (if applicable).
- Willing and able to provide written informed consent and comply with study procedures and follow-up schedule.
Exclusion criteria
- Predominant stress urinary incontinence (SUI) based on bladder diary
- Currently pregnant, breastfeeding, or planning pregnancy during the study
- History of neurologic conditions affecting bladder function (e.g., multiple sclerosis, spinal cord injury, Parkinson's disease)
- Active urinary tract infection (UTI) at screening
- History of interstitial cystitis, bladder pain syndrome, or chronic pelvic pain
- Prior or current bladder cancer, pelvic malignancy, or pelvic radiation
- Pelvic organ prolapse beyond the hymen (POP-Q stage > II)
- Implanted neuromodulation device or prior sacral nerve stimulation
- Use of bulking agents, Botox, or surgical treatment for incontinence within 12 months
- Prior pelvic floor RF treatment or laser vaginal rejuvenation
- Significant pelvic anatomical abnormalities that interfere with treatment
- Use of investigational drug or device within 30 days before screening
- Any condition that, in the investigator's opinion, would interfere with safe study participation or data integrity
- Uncontrolled systemic disease (e.g., uncontrolled diabetes, cardiovascular disease)
- Inability or unwillingness to comply with study requirements or follow-up
Trial design
Primary purpose
Allocation
Interventional model
Masking
202 participants in 2 patient groups
Trial contacts and locations
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Central trial contact
FFHA Study Manager
Data sourced from clinicaltrials.gov
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