Clinical trial Recruiting at 67 sites Phase 2 Interventional Ages 18 and up

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

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment131 (estimated)
SponsorProtara Therapeutics
Industry-sponsored
Locations78 sites (Homewood, Alabama and 77 other locations)
StatusRecruiting
StartedSeptember 15, 2023
Main results expectedOctober 2031
Study endsMarch 2032
Registry record updatedAugust 24, 2026
Trial IDNCT05951179 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

  • 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
  • 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

Similar studies

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

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.