Investigating TARA-002 for treating high-grade bladder cancer
Official title: A Phase 2, Open-Label Study to Evaluate the Safety and Efficacy of Intravesical Instillation of TARA-002 in Adults With High-Grade Non-Muscle Invasive Bladder Cancer
Run by Protara Therapeutics · NCT05951179 · Data updated 2026-11-12
This study is testing a new treatment called TARA-002 to see if it can help adults with high-grade bladder cancer feel better and fight the disease.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 131 (estimated) |
| Sponsor | Protara Therapeutics Industry-sponsored |
| Locations | 78 sites (Homewood, Alabama and 77 other locations) |
| Status | Recruiting |
| Started | September 15, 2023 |
| Main results expected | October 2031 |
| Study ends | March 2032 |
| Registry record updated | August 24, 2026 |
| Trial ID | NCT05951179 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include adults aged 18 and older with confirmed high-grade non-muscle invasive bladder cancer who meet specific cohort criteria regarding previous BCG treatment.
✕Probably not a fit
Patients with predominant adenocarcinoma, squamous cell carcinoma, or other histological variants 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 study evaluates the safety and anti-tumor activity of TARA-002, administered through intravesical instillation, in adults with high-grade non-muscle invasive bladder cancer (NMIBC). Participants are divided into two cohorts: one for those who are BCG naive or have not received BCG for at least 24 months, and another for those with persistent or recurrent disease who are BCG unresponsive. The study aims to build on findings from a previous Phase 1a dose-finding study to determine the optimal dose and efficacy of TARA-002.
Why it matters
Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with high-grade non-muscle invasive bladder cancer.
How similar studies have gone: Other studies have shown promise with similar intravesical therapies, but this specific approach with TARA-002 is novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Male or female participants 18 years of age or older at the time of signing informed consent * Participants who have voluntarily given written informed consent after the nature of the study has been explained according to applicable requirements prior to study entry * Central histologic confirmation of high-grade non-muscle invasive CIS (± Ta/T1) with active disease * Participants who are BCG naive, or participants who are BCG exposed and have not received intravesical BCG for at least 24 months prior to the most recent CIS diagnosis (Cohort A). Participants with CIS (± Ta/T1) who are BCG unresponsive. Exclusion Criteria: * Penicillin allergy (participants with a questionable history of allergy to penicillin will undergo penicillin blood allergy testing via central laboratory * Central confirmed variant histology * Concomitant prostatic or upper tract urothelial involvement per Investigator's assessment * Nodal and metastatic disease are excluded if they existed at any time (whether present or in the past) * Any history of ≥ T2 bladder cancer that existed at any point in time in the participant's history For more information on eligibility criteria, please contact the Sponsor
Where it's running
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Urology Centers of Alabama
Homewood, Alabama, United States Recruiting -
Mayo Clinic
Phoenix, Arizona, United States Recruiting -
East Valley Urology Center of Arizona
Queen Creek, Arizona, United States Recruiting -
Arkansas Urology
Little Rock, Arkansas, United States Recruiting -
Michael Oefelein Clinical Trials
Bakersfield, California, United States Recruiting -
University of California Irvine Medical Center
Orange, California, United States Recruiting
Show 44 more locations
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Genesis Research LLC
Torrance, California, United States Recruiting -
Colorado University - Anshutz
Aurora, Colorado, United States Recruiting -
AdventHealth Medical Group Urology of Denver
Denver, Colorado, United States Recruiting -
Advanced Urology
Lakewood, Colorado, United States Recruiting -
Urology Associates of Denver
Lone Tree, Colorado, United States Recruiting -
Mayo Clinic
Jacksonville, Florida, United States Recruiting -
Comprehensive Urologic Care
Lake Barrington, Illinois, United States Recruiting -
Southern Urology
Lafayette, Louisiana, United States Recruiting -
Brigham and Women's Hospital
Boston, Massachusetts, United States Recruiting -
Greater Boston Urology, LLC
Plymouth, Massachusetts, United States Recruiting -
Minnesota Urology, Woodbury
Bloomington, Minnesota, United States Recruiting -
Mayo Clinic
Rochester, Minnesota, United States Recruiting -
Renown Regional Medical Center
St Louis, Missouri, United States Recruiting -
Specialty Clinic Research of St. Louis
St Louis, Missouri, United States Recruiting -
Laura & Isaac Perlmutter Cancer Center - NYU Langone Health
New York, New York, United States Recruiting -
University of Rochester, Department of Urology
Rochester, New York, United States Recruiting -
Associated Medical Professionals of NY, PLLC
Syracuse, New York, United States Recruiting -
Montefiore Medical Center
The Bronx, New York, United States Recruiting -
Cleveland Clinic Main Campus, Cleveland
Cleveland, Ohio, United States Recruiting -
University of Pittsburgh Medical Center
Pittsburgh, Pennsylvania, United States Recruiting -
Carolina Urologic Research Center
Myrtle Beach, South Carolina, United States Recruiting -
Conrad Person Clinic
Memphis, Tennessee, United States Recruiting -
Urology Associates PC
Nashville, Tennessee, United States Recruiting -
Urology Partners of North Texas
Arlington, Texas, United States Recruiting -
Urology Austin, LLC
Austin, Texas, United States Recruiting -
Houston Metro Urology
Houston, Texas, United States Recruiting -
Houston Methodist Hospital
Houston, Texas, United States Recruiting -
UT Health San Antonio
San Antonio, Texas, United States Recruiting -
Virginia Urology
Richmond, Virginia, United States Recruiting -
Spokane Urology
Spokane, Washington, United States Recruiting -
Hospital Italiano de Buenos Aires (HIBA)
Buenos Aires, Argentina Recruiting -
Hospital Britanico de Buenos Aires
Buenos Aires, Argentina Recruiting -
Centro Argentino de Urologia
Caba, Argentina Recruiting -
Hospital Sirio Libanes
Caba, Argentina Recruiting -
Centro Urologico Profesor Bengio SA
Córdoba, Argentina Recruiting -
Cemaic
Córdoba, Argentina Recruiting -
Clinica Privada Independencia
Munro, Argentina Recruiting -
Kyushu University Hospital
Nova Lima, Minas Gerais, Brazil Recruiting -
Office of Lucas Nougeria MA
Nova Lima, Minas Gerais, Brazil Recruiting -
Santa Casa de Misericordia de Porto Alegre
Porto Alegre, Rio Grande do Sul, Brazil Recruiting -
Nucleo de Pesquisa Clinica do Rio Grande so Sul
Porto Alegre, Rio Grande do Sul, Brazil Recruiting -
Centro de Urologia Avancada
Porto Alegre, Rio Grande do Sul, Brazil Recruiting -
Hospital de Clinicas da UNICAMP
Campinas, São Paulo, Brazil Recruiting -
Instituto Dor de Pesquisa e Ensino
Jardim Paulista, São Paulo, Brazil Recruiting
+28 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Chief Scientific Operations Officer
- Email: clinicaltrials@protaratx.com
- Phone: 16468440337
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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NMIBC sample collection to test cancer monitoring biomarkers
This study tests a blood, urine, and tumor tissue collection approach in people with high-risk non-muscle invasive bladder cancer to see if a molecular test can detect residual disease and monitor recurrence.
-
Sequential Gemcitabine Plus Docetaxel vs Gemcitabine Plus Mitomycin C for BCG-Unresponsive NMIBC
This study tests whether adding docetaxel after gemcitabine is better or worse than adding mitomycin C after gemcitabine for people with BCG-unresponsive high-grade non-muscle-invasive bladder cancer.
-
Is ongoing systemic immunotherapy needed after achieving tumor-free status in very-high-risk NMIBC?
This study tests whether patients who have become tumor-free after a systemic immunotherapy-based bladder-sparing treatment can safely stop therapy and instead be watched closely.
-
Comparing CT and MRI with VI-RADS for Bladder Cancer Staging
This study tests how well CT and MRI with VI-RADS can correctly stage bladder cancer before surgery in adults.
-
How bladder microbes and immune signals affect lower urinary tract health
This project will test whether differences in bladder microbes and immune signals are linked to urinary tract health in adults with and without various urinary conditions.
-
Cretostimogene for BCG‑unresponsive high‑grade non‑muscle‑invasive bladder cancer
This treatment will test cretostimogene plus n‑dodecyl‑β‑D‑maltoside in adults whose high‑grade non‑muscle‑invasive bladder cancer did not respond to BCG (carcinoma in situ with or without Ta/T1 tumors).
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.