ClinicalTrials.gg
RecruitingNCT05737121Updated Jan 22, 2026

Safety and Efficacy Study of VNX001 Compared to Its Individual Components (Lidocaine and Heparin) or Placebo in Subjects With IC/BPS

A Phase 2 interventional study of VNX001 and Placebo in Interstitial Cystitis and Bladder Pain Syndrome, sponsored by Vaneltix Pharma, Inc.. Recruiting at 14 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-01-22.

Sponsored by Vaneltix Pharma, Inc. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2026, 5 months ago, but the record still lists the study as recruiting.
  • Started May 2023; still recruiting 3 years 5 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a Phase 2, prospective, randomized, double-blind, placebo-controlled, multi-center, single-dose, pharmacodynamic study designed to evaluate the efficacy and safety of the combination product (VNX001) versus placebo and its individual components (heparin sodium and lidocaine hydrochloride (HCl)) for the reduction of bladder pain in patients with interstitial cystitis (IC) / bladder pain syndrome (BPS), Who Have an Episode of Acute Bladder Pain of Moderate to Severe Intensity.

Read the detailed description

This is a Phase 2, prospective, randomized, double-blind, placebo-controlled, multi-center, single-dose, pharmacodynamic study designed to evaluate the efficacy and safety of the combination product (VNX001) versus placebo and its individual components (heparin sodium and lidocaine hydrochloride) for the reduction of bladder pain in patients with IC/BPS, Who Have an Episode of Acute Bladder Pain of Moderate to Severe Intensity. The study will enroll a target of 120 subjects, with a maximum of 180 subjects, across approximately 12 sites in the United States. Each study subject will receive a single dose of VNX001, placebo (alkalinized phosphate buffer), alkalinized lidocaine, or alkalinized heparin by random assignment. The randomization ratio will be 3:1:3:1, respectively. At 24-48-hours post-dose, all subjects will be given the option of requesting a single dose of VNX001.

02

Conditions studied

  • Interstitial Cystitis
  • Bladder Pain Syndrome

Keywords

  • interstitial cystitis (IC)
  • bladder pain syndrome (BPS)
  • alkalinized lidocaine
  • heparin
  • intravesical
  • VNX001
03

In context

Cystitis, Interstitial

236 studies on the registry are indexed under Cystitis, Interstitial; 35 are open to participants now.

This study's planned enrollment of 120 is above the median of 51 across 158 interventional studies indexed under Cystitis, Interstitial.

Browse Cystitis, Interstitial studies →

Lead sponsor

Vaneltix Pharma, Inc. is the lead sponsor of 2 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Be able and willing to give a signed 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

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 for the duration of the
  • 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 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 .
  • 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 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 : 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
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    VNX001

    VNX001 (lidocaine HCl \[200 mg\] and heparin sodium \[50,000 USPU\] in alkalinized buffer), administered as a single dose via intravesical instillation; n=45 (anticipated)

    Drug: VNX001

  • Placebo comparator
    Placebo

    Alkalinized buffer, administered as a single dose via intravesical instillation; n=15 (anticipated)

    Drug: Placebo

  • Experimental
    Lidocaine

    Lidocaine HCl (200 mg) in alkalinized buffer, administered as a single dose via intravesical instillation; n=45 (anticipated)

    Drug: Lidocaine

  • Experimental
    Heparin

    Heparin sodium (50,000 USPU) in alkalinized buffer, administered as a single dose via intravesical instillation; n=15 (anticipated)

    Drug: Heparin

Interventions

  • DrugVNX001

    VNX001 (alkalinized lidocaine HCl and heparin sodium)

    Also known as: Alkalinized lidocaine HCl and heparin sodium

  • DrugPlacebo

    Inactive placebo for VNX001

    Also known as: Placebo (for VNX001)

  • Alkalinized lidocaine hydrochloride

    Also known as: Alkalinized lidocaine HCl

  • Alkalinized heparin sodium

    Also known as: Alkalinized heparin sodium

06

What researchers measure

Primary outcomes

  1. Sum of bladder pain intensity differences from baseline to 12 hours post-dose (SPID-12)

    A measure of the sum of bladder pain intensity differences from baseline to 12 hours post-dose (SPID-12), as determined using an 11-point numerical rating scale (NRS) for bladder pain. The 11-point NRS for bladder pain is a scale from 0 to 10, with 0 indicating no bladder pain and 10 indicating the worst imaginable bladder pain.

    Time frame: 12 hours

Secondary outcomes

  1. Sum of bladder pain intensity differences from baseline to 6, 10, and 24 hours post-dose (SPID-6, SPID-10, and SPID-24, respectively)

    A measure of the sum of bladder pain intensity differences from baseline to 6, 10, and 24 hours post-dose (SPID-6, SPID-10, and SPID-24, respectively), as determined using an 11-point numerical rating scale (NRS) for bladder pain. The 11-point NRS for bladder pain is a scale from 0 to 10, with 0 indicating no bladder pain and 10 indicating the worst imaginable bladder pain.

    Time frame: 6, 10, or 24 hours

  2. Change in bladder pain from baseline to 1, 4, 8, 12, and 24 hours post-dose

    Average absolute change and average percentage change in bladder pain from baseline to 1, 4, 8, 12, and 24 hours post-dose, as determined using an 11-point numerical rating scale (NRS) for bladder pain. The 11-point NRS for bladder pain is a scale from 0 to 10, with 0 indicating no bladder pain and 10 indicating the worst imaginable bladder pain.

    Time frame: 1, 4, 8, 12, and 24 hours

  3. Change in Question 3 of the Patient Overall Rating of Improvement of Symptoms (PORIS) questionnaire

    Percentage of subjects achieving ≥ 50% improvement in Question 3 of the PORIS questionnaire at 1, 10, and 24 hours post-dose. The PORIS questionnaire is an assessment of the subject's condition after treatment compared to before treatment. In particular, Question 3 of the PORIS questionnaire asks subjects to select the category that best describes the overall change in their condition compared to before receiving study medication; the choices are: worse, no better (0% improvement), slightly improved (25% improvement), moderately improved (50% improvement), greatly improved (75% improvement), or symptoms gone (100% improvement).

    Time frame: 1, 10, and 24 hours

  4. Use of optional open-label intravesical administration of VNX001

    Number of patients requesting the optional open-label intravesical administration of VNX001 at 24-48 hours after randomized study drug administration

    Time frame: 48 hours

  5. Adverse events (AEs)

    Incidence of treatment-emergent adverse events (TEAEs), drug-related adverse events (AEs), and discontinuations due to AEs

    Time frame: 72 hours

07

Study locations

11 of 14 sites recruiting
  • IC Study LLC
    Escondido, California 92025, United States
    Suspended

    Not enrolling at this site.

  • University of California Los Angeles Center for Women's Pelvic Health
    Los Angeles, California 90095, United States
    Completed

    Not enrolling at this site.

  • The Clark Center for Urogynecology
    Newport Beach, California 92663, United States
    Recruiting
  • The Continence Center Medical Group, Inc dba Southern California Continence Center
    Newport Beach, California 92663, United States
    Completed

    Not enrolling at this site.

  • University of California San Diego Medical Center
    San Diego, California 92103, United States
    Recruiting
  • Prestige Medical Group
    Tustin, California 92780, United States
    Recruiting
  • United Research Institute
    Hialeah, Florida 33012, United States
    Recruiting
  • Florida Urology Partners
    Tampa, Florida 33615, United States
    Recruiting
  • Georgia Urology
    Cartersville, Georgia 30120, United States
    Recruiting
  • Southern Clinical Research Associates LLC
    Metairie, Louisiana 70001, United States
    Recruiting
  • Bay State Clinical Trials
    Watertown, Massachusetts 02472, United States
    Recruiting
  • Sheldon Freedman MD LTD
    Las Vegas, Nevada 89144, United States
    Recruiting
  • Northwell Health
    Lake Success, New York 11042, United States
    Recruiting
  • The Wake Forest Institute of Regenerative Medicine
    Winston-Salem, North Carolina 27101, United States
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2023 (actual). Primary completion is estimated for Jun 2026, 37 months after the start.

Of 19 phase 2 interventional studies under Cystitis, Interstitial, half reached primary completion within 27 months of starting (the median), counting those still running; a quarter within 17 and three quarters within 34. This study's planned 37 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 10, 2023
First posted
Feb 21, 2023
StartActual
May 22, 2023
Primary completionEst.
Jun 2026
CompletionEst.
Jun 2026
Last update
Jan 22, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05737121
Lead sponsor
Vaneltix Pharma, Inc.
Collaborators
Prevail Infoworks
Responsible party
Sponsor
First posted
Feb 21, 2023
Start date
May 22, 2023
Primary completion
Jun 2026 (estimated)
Completion
Jun 2026 (estimated)
Last update
Jan 22, 2026

Study contacts

Vaneltix Pharma, Inc.
Contact
info@vaneltix.com
732-354-3217

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Lidocaine · Heparin

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