Where interstitial cystitis treatment is heading
Interstitial cystitis · Updated Nov 13, 2026
Interstitial cystitis (bladder pain syndrome) causes bladder pain, urgency and frequent urination without infection. It is far more common in women. Treatment combines self-care, physical therapy, pills, bladder instillations and injections; no option works for everyone.
- 27studies open or running
- 4phase 3 trials
- 274papers published this year
- 40NIH-funded projects
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Now
Nov 2026
Physical therapy as an early stepHappened
Pelvic floor physical therapy lowered pain more than inactive treatments.
Botox equals instillationsHappened
Bladder botox and bladder instillations improved symptoms equally at 2 months.
PRP helps about half, unprovenHappened 48% success, uncontrolled
Uncontrolled studies report 48% success with platelet-rich plasma.
48%: success rate in uncontrolled studies.
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6 months
by May 2027
A new numbing bladder instillationPossible
Vaneltix's 120-person phase 2 of VNX001 compares the combination with its separate parts.
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12 months
by Nov 2027
Amniotic membrane injectionsLong shot
A 100-person placebo-controlled trial in Cleveland finishes May 2027.
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3 years
by late 2029
Stem cells for Hunner lesionsLong shot 8 lesions shrank
Early results showed lesions shrinking in 8 people; larger trials are the next step.
8: people whose Hunner lesions shrank or cleared.
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5 years
by late 2031
A drug aimed at bladder pain signalsLong shot
University of Pittsburgh researchers are testing whether blocking the enzyme PNPase relieves chronic bladder pain.
The research paths
Bladder injections and instillations
48% success, uncontrolledDetails and 2 trialsHide
New mixtures and biologic injections placed directly in the bladder.
WatchVNX001 and amniotic membrane results.
Regenerative treatment
8 lesions shrankDetailsHide
Stem cells and tissue products to repair the bladder lining.
WatchLarger stem cell trials.
Borrowed from other conditions
From Overactive bladder
Botulinum toxin
In use
Bladder injections first used for urge incontinence.
From Sports medicine
Platelet-rich plasma
Studied
The patient's own concentrated platelets, injected to promote healing.
Open to join now
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IC/BPS
VNX001 bladder instillation
Locations and eligibility → -
IC/BPS, Cleveland
Amniotic membrane injection
Locations and eligibility →
See every recruiting Interstitial cystitis trial →
When the trials finish
Completion dates the trials registered. Results usually follow 3 to 12 months later.
- Heating up
- Maturing
- Early
- Cooling
- Fully enrolled, waiting on results
- Still enrolling
Knowledge on the way
Not treatments yet: detection, causes and how care is delivered. Mostly NIH-funded.
- AreaQuestionFunded throughNews likely
- Pain Brain circuits that amplify bladder painUniversity of Texas at Dallas · NIH Funded through Aug 2028 News likely 2028+
- Biology How the bladder lining is maintained and fails in ICStanford University · NIH Funded through Aug 2027 News likely 2027–2028
What just happened
PRP review: 48% success, weak evidence
International Urogynecology Journal.
Stem cells shrink Hunner lesions
Phase 1/2a, 22 people.
Standard treatment today
- First stepsEducation, diet changes, stress management, pelvic floor physical therapy.
- Ongoing symptomsPills such as amitriptyline, hydroxyzine or cimetidine; bladder instillations.
- Hunner lesionsCauterizing or injecting the lesions with steroids during cystoscopy.
- Hard to treatBotox injections, nerve stimulation, cyclosporine; surgery is a last resort.
How to read this page, and sourcesHow to read this page, and sources
- Many interstitial cystitis studies are small or lack placebo groups.
- Forecasts are editorial judgments by Find a Trial, not predictions from sponsors or regulators.
See Interstitial cystitis trials recruiting now →