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Recruiting Phase 2 NCT05951179

NCT05951179 Safety and Efficacy Study of Intravesical Instillation of TARA-002 in Adults With High-grade Non-muscle Invasive Bladder Cancer

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Clinical Trial Summary
NCT ID NCT05951179
Status Recruiting
Phase Phase 2
Sponsor Protara Therapeutics
Condition Non-muscle Invasive Bladder Cancer
Study Type INTERVENTIONAL
Enrollment 131 participants
Start Date 2023-09-15
Primary Completion 2031-10

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
TARA-002

Eligibility Fast-Check

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What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 131 participants in total. It began in 2023-09-15 with a primary completion date of 2031-10.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

TARA-002-101-Ph2 is an open-label study to investigate the safety and efficacy of intravesical instillation of TARA-002 in adults 18 years of age or older with high-grade CIS NMIBC (± Ta/T1). The purpose of this Phase 2 study (TARA-002-101-Ph2) is to further assess the safety and efficacy of TARA-002 at the RP2D which has been established in the Phase 1a dose finding study (TARA-002-101-Ph1a). This Phase 2 study includes participants with CIS NMIBC (± Ta/T1) with active disease, defined as disease present at last tumor evaluation (within 3 months) prior to signing the ICF. Participants will be enrolled into one of 2 cohorts: Cohort A: * Participants with CIS (± Ta/T1) who are BCG naive, or * Participants with CIS (± Ta/T1) who are BCG exposed and have not received intravesical BCG for at least 24 months prior to the most recent CIS diagnosis Cohort B: * Participants who are BCG unresponsive

Eligibility 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

Contact & Investigator

Central Contact

Chief Scientific Operations Officer

✉ clinicaltrials@protaratx.com

📞 16468440337

Principal Investigator

Chief Scientific Operations Officer

STUDY DIRECTOR

Protara Therapeutics

Frequently Asked Questions

Who can join the NCT05951179 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Non-muscle Invasive Bladder Cancer. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT05951179 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT05951179 currently recruiting?

Yes, NCT05951179 is actively recruiting participants. Contact the research team at clinicaltrials@protaratx.com for enrollment information.

Where is the NCT05951179 trial being conducted?

This trial is being conducted at Homewood, United States, Phoenix, United States, Queen Creek, United States, Little Rock, United States and 11 additional locations.

Who is sponsoring the NCT05951179 clinical trial?

NCT05951179 is sponsored by Protara Therapeutics. The principal investigator is Chief Scientific Operations Officer at Protara Therapeutics. The trial plans to enroll 131 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology