Clinical trial Recruiting at 11 sites Phase 2 Interventional Ages 18 and up

Evaluating VNX001 for bladder pain relief in patients with interstitial cystitis

Official title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled Multi-Center Single Dose Study to Evaluate the Safety and Effectiveness of VNX001 Compared to Placebo, and the Individual Components of Lidocaine, and Heparin in Subjects With Interstitial Cystitis/Bladder Pain Syndrome Who Have an Episode of Acute Bladder Pain of Moderate to Severe Intensity; The Engage 2024 Study

Run by Vaneltix Pharma, Inc. · NCT05737121 · Data updated 2026-11-12

This study is testing if a new treatment called VNX001 can help relieve bladder pain in people with interstitial cystitis better than its individual ingredients or a placebo.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment120 (estimated)
SponsorVaneltix Pharma, Inc.
Industry-sponsored
Drugs / interventionschemotherapy, radiation, cyclophosphamide
Locations14 sites (Escondido, California and 13 other locations)
StatusRecruiting
StartedMay 22, 2023
Main results expectedJune 2026
Study endsJune 2026
Registry record updatedJanuary 22, 2026
Trial IDNCT05737121 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with a history of interstitial cystitis/bladder pain syndrome and experiencing acute bladder pain of moderate to severe intensity.

Probably not a fit

Patients who are pregnant, lactating, or have not previously received therapeutic intravesicular anesthetic treatment may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 2 clinical trial is designed to assess the safety and efficacy of VNX001, a combination product, compared to its individual components (lidocaine and heparin) and a placebo in patients suffering from interstitial cystitis/bladder pain syndrome (IC/BPS). The study will enroll approximately 120 to 180 participants across 12 sites in the United States, who will receive a single dose of either VNX001, placebo, alkalinized lidocaine, or alkalinized heparin. Participants will be randomly assigned to one of the treatment groups and will be monitored for pain reduction 24-48 hours post-dose. The trial aims to provide insights into the effectiveness of VNX001 in alleviating acute bladder pain of moderate to severe intensity.

Why it matters

Potential benefit: If successful, this study could offer a new effective treatment option for patients suffering from bladder pain due to interstitial cystitis.

How similar studies have gone: Other studies have explored similar approaches, but the specific combination of VNX001 is novel and has not been previously tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Be able and willing to give a signed informed consent and to follow study instructions
* Be male or female, ≥ 18 years of age
* Have a history of IC/BPS for at least 9 months prior to the study
* Have a score of ≥ 16 and ≤ 30 on the Pelvic Pain and Urgency/Frequency (PUF) questionnaire, completed at screening
* Have an episode of acute bladder pain of moderate to severe intensity with a minimum score of 5 on the 11-point bladder pain NRS at time of screening and 15 minutes post void immediately prior to study drug administration.
* Have previously received a therapeutic intravesicular anesthetic treatment according to medication history

Exclusion Criteria:

* For females, have a positive pregnancy test at screening or be pregnant or lactating
* Males who are sexually active with females and are not willing to commit to an acceptable method of birth control for the duration of the
* Postmenopausal women who, if taking hormone replacement therapy, have not been stabilized on a regimen of hormone replacement therapy within 3 months of screening
* Have a known hypersensitivity to heparin or lidocaine
* Have used any local anesthetic by any route within 48-hours prior to study drug administration, or used a lidocaine patch or lidocaine containing topical compounds within 14 days prior to study drug administration
* Have used a tricyclic antidepressant, or a gamma-aminobutyric acid (GABA) analogue (gabapentin or pregabalin), unless taking a stable dose of the medication for ≥ 3 weeks. The stable dose of gabapentin may not exceed 1,200 mg per day, and the stable dose of pregabalin may not exceed 150 mg per day
* Have used any pain medication within 6 hours prior to study drug administration
* Have used narcotics or medical marijuana ≤ 3 weeks prior to study entry
* Have used prohibited drugs as determined by self-report, positive urine drug screen, or in the opinion of the investigator be under the influence of drugs affecting mentation precluding their ability to follow the study protocol or bias study results
* Have a known abnormal laboratory test value that, in the investigator's judgement, is clinically significant.
* Have a neurogenic bladder or other disorder that, in the opinion of the investigator, may cause neurogenic bladder (including Parkinson's disease, multiple sclerosis, epilepsy, myasthenia gravis, movement disorders, spinal cord damage)
* Have pain or a pain disorder that, in the opinion of the investigator, would make it difficult to discriminate pelvic pain of bladder origin from the other pain
* Have any of the following central nervous system (CNS) conditions that in the opinion of the investigator would impact the subject's study participation due to their ability to follow the study protocol or bias study results, severe diagnosed: major depressive disorder, bipolar disorder, schizophrenia, general anxiety disorder, attention deficit disorder, obsessive compulsive disorder, or other major central nervous system disorder
* Have history of arrhythmias, conduction disturbances, or cardiac disease, or any coexisting medical condition that, in the opinion of the investigator, may be significant or interfere with study procedures or interpretation of study results
* Had anesthetic bladder instillation therapy within 14 days prior to study entry
* Had an in-office cystoscopy within 7 days of study drug administration
* Had dilatation (hydrodistension) of bladder within 3 months of study entry
* Evidence or suspected presence of cancer detected during cystoscopy 7 days prior to or at time of initial screening
* Has received any investigational drug or device within 30 days prior to screening
* Is currently enrolled in another investigational drug or device study
* Is unwilling or unable to abide by the requirements of the study
* Have an actively bleeding lesion or area in the bladder as detected by dipstick urinalysis and investigator assessment, immediately prior to randomization
* Have a history of coagulopathy or taking anticoagulants.
* Are taking any of the following medications, which are inducers of CYP1A2 and/or CYP3A4: Phenytoin, Carbamazepine, St. John's Wort, Phenobarbital, Rifampin
* Have had any of the following:

  * Bacterial cystitis within 30 days as demonstrated by a positive urine culture (≥ 105 bacteria per mL)
  * History of pelvic irradiation or radiation cystitis
  * History or presence of uterine, cervical, pelvic, rectal, ovarian, or vaginal cancer
  * History of benign or malignant bladder tumors
  * Current chemotherapy
  * History or presence of tuberculous cystitis
  * History or presence of chemical cystitis, including that due to cyclophosphamide
  * History or presence of urinary schistosomiasis
  * Bladder or ureteral calculi
  * Clinically significant infectious vaginitis
  * Currently uncontrolled genital herpes
  * History or presence of urethral diverticulum
  * Presence of bladder fistulae
  * History of ketamine use

Where it's running

  • The Clark Center for Urogynecology
    Newport Beach, California, United States
    Recruiting
  • University of California San Diego Medical Center
    San Diego, California, United States
    Recruiting
  • Prestige Medical Group
    Tustin, California, United States
    Recruiting
  • United Research Institute
    Hialeah, Florida, United States
    Recruiting
  • Florida Urology Partners
    Tampa, Florida, United States
    Recruiting
  • Georgia Urology
    Cartersville, Georgia, United States
    Recruiting
Show 8 more locations
  • Southern Clinical Research Associates LLC
    Metairie, Louisiana, United States
    Recruiting
  • Bay State Clinical Trials
    Watertown, Massachusetts, United States
    Recruiting
  • Sheldon Freedman MD LTD
    Las Vegas, Nevada, United States
    Recruiting
  • Northwell Health
    Lake Success, New York, United States
    Recruiting
  • The Wake Forest Institute of Regenerative Medicine
    Winston-Salem, North Carolina, United States
    Recruiting
  • IC Study LLC
    Escondido, California, United States
    Suspended
  • University of California Los Angeles Center for Women's Pelvic Health
    Los Angeles, California, United States
    Completed
  • The Continence Center Medical Group, Inc dba Southern California Continence Center
    Newport Beach, California, United States
    Completed

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Evaluating a catheter-free method for bladder medication delivery

    This study is testing a new way to deliver bladder medication without a catheter to see if it’s more comfortable and safer for people with conditions like interstitial cystitis and recurrent urinary tract infections.

    Recruiting at 2 sites Jahn Ferenc South Pest Teaching Hospital · Budapest and 1 other locations · NCT06719232

  • Treatment of bladder pain using VNX001

    This study is testing a new treatment called VNX001 to see if it can help people with moderate to severe bladder pain feel better.

    Recruiting at 2 sites Phase 2 Vaneltix Pharma, Inc. · Tucson, Arizona and 4 other locations · NCT06394830

  • Acupuncture for treating bladder pain syndrome in women

    This study is testing if acupuncture, along with some behavior changes, can help women with bladder pain syndrome feel better when other treatments haven't worked.

    Recruiting University Hospitals Cleveland Medical Center · Cleveland, Ohio · NCT06366269

  • Assessing pain types in treating bladder pain syndrome

    This study is trying to see how different types of bladder pain affect how well people with bladder pain syndrome respond to pelvic floor physical therapy and cognitive-behavioral therapy.

    Recruiting Vanderbilt University Medical Center · Franklin, Tennessee · NCT06299683

  • PEMF therapy for women with bladder pain syndrome

    This study is testing if a new non-invasive treatment using pulsed electromagnetic fields can help women with bladder pain syndrome feel less pain and improve their urinary symptoms.

    Recruiting Wake Forest University Health Sciences · Winston-Salem, North Carolina · NCT05149573

  • A program to ease pelvic pain through cognitive behavioral therapy

    This study is testing a short program of cognitive behavioral therapy to see if it can help people with chronic pelvic pain feel better compared to regular patient education.

    Recruiting State University of New York at Buffalo · Los Angeles, California and 2 other locations · NCT05127616

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.