Safety and Toxicity Study of Intravesical Instillation of TARA-002 in Adults with High-grade Non-muscle Invasive Bladder Cancer (Phase 1a)

NCT ID: NCT05085977

Last Updated: 2025-01-27

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-03-10

Study Completion Date

2024-10-30

Brief Summary

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This study is an open-label dose escalation study (Phase 1a) to investigate the safety and toxicity of intravesical treatment of high-grade NMIBC (HGTa or CIS, including CIS with concomitant Ta) after transurethral resection of bladder tumor (TURBT) and/or biopsy using TARA-002 in adults unable to obtain intravesical Bacillus Calmette-Guérin (BCG), adults who have received at least one dose of intravesical BCG or adults who have received at least one dose of intravesical chemotherapy. Dosing will start in subjects with HGTa or CIS (including CIS with concomitant Ta), and all subjects will receive 6 weeks of treatment at a fixed volume with varying dose levels.

Detailed Description

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Conditions

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Non-muscle Invasive Bladder Cancer

Study Design

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Allocation Method

NA

Intervention Model

SEQUENTIAL

First, up to 3 dose levels of TARA-002 (10 KE → 20 KE → 40 KE) will be tested sequentially with 6 weekly intravesical doses starting with the lowest dose using a 3+3 design in a dose escalation manner until the RP2D has been established. If the MTD is not reached, additional cohorts of dose levels higher than 40 KE may be explored.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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TARA-002

TARA-002 is a lyophilized biological preparation for instillation containing cells of Streptococcus pyogenes (Group A, type 3) Su strain treated with benzylpenicillin.

Group Type EXPERIMENTAL

TARA-002

Intervention Type BIOLOGICAL

Phase 1a, Dose Escalation: First, up to 3 dose levels of TARA-002 (10 KE → 20 KE → 40 KE) will be tested sequentially with 6 weekly intravesical doses starting with the lowest dose using a 3+3 design in a dose escalation manner until the RP2D has been established. If the MTD is not reached, additional cohorts of dose levels higher than 40 KE may be explored.

Interventions

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TARA-002

Phase 1a, Dose Escalation: First, up to 3 dose levels of TARA-002 (10 KE → 20 KE → 40 KE) will be tested sequentially with 6 weekly intravesical doses starting with the lowest dose using a 3+3 design in a dose escalation manner until the RP2D has been established. If the MTD is not reached, additional cohorts of dose levels higher than 40 KE may be explored.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Male or female subjects 18 years of age or older at the time of signing the informed consent
* Subjects who have voluntarily given written informed consent after the nature of the study has been explained according to applicable requirements prior to study entry
* Subjects with a histologically confirmed, high-grade Ta or CIS (including CIS with concomitant Ta) urothelial cell carcinoma of the bladder on central review
* Subjects who are treatment naïve, are unable to obtain intravesical BCG for the treatment of NMIBC, have received at least one dose of intravesical BCG, or at least one dose of intravesical chemotherapy

Exclusion Criteria

* Penicillin allergy (subjects with a questionable history of allergy to penicillin or no history of penicillin use will undergo penicillin blood allergy testing prior to inclusion in the study)
* Predominant (defined as \> 50%) adenocarcinoma, squamous cell carcinoma, or histological variants including plasmacytoid, sarcomatoid, or squamous components according to central review
* Concomitant prostatic or upper tract urothelial involvement, per Investigator's assessment
* Nodal involvement or metastatic disease that existed at any time (past or present disease)
* Bladder cancer stage ≥ T1 within the last 36 months according to central histology review
* Bladder cancer stage CIS with concomitant T1

For more information on eligibility criteria, please contact the sponsor.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Protara Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Chief Scientific Operations Officer

Role: STUDY_DIRECTOR

Protara Therapeutics

Locations

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USC Norris Cancer Center

Los Angeles, California, United States

Site Status

Mayo Clinic

Jacksonville, Florida, United States

Site Status

Tulane Medical Center

New Orleans, Louisiana, United States

Site Status

Chesapeake Urology Research Associates

Baltimore, Maryland, United States

Site Status

Mayo Clinic

Rochester, Minnesota, United States

Site Status

New Jersey Urology

Mount Laurel, New Jersey, United States

Site Status

Premier Medical Group of the Hudson Valley

Poughkeepsie, New York, United States

Site Status

University of Rochester, Department of Urology

Rochester, New York, United States

Site Status

Carolina Urologic Research Center

Myrtle Beach, South Carolina, United States

Site Status

Urology Associates PC

Nashville, Tennessee, United States

Site Status

UT Health San Antonio

San Antonio, Texas, United States

Site Status

PMSI Republican Clinical Hospital "T. Mosneaga," ARENSIA Exploratory Medicine Phase I Unit

Chisinau, , Moldova

Site Status

Spitalul Clinic de Nefrologie Carol Davila

Bucharest, , Romania

Site Status

Arensia Kapitanivka

Kapitanivka, , Ukraine

Site Status

Countries

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United States Moldova Romania Ukraine

Other Identifiers

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TARA-002-101 (Phase 1a)

Identifier Type: -

Identifier Source: org_study_id

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