Efficacy and Safety of Intravesical TARA-002 Compared With Investigator's Choice of Intravesical Chemotherapy in Participants With BCG-naïve High-grade Non-muscle Invasive Bladder Cancer

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age18+
SponsorProtara Therapeutics

About this trial

The goal of this clinical trial is to learn if TARA-002 can treat high-grade non-muscle invasive bladder cancer (NMIBC) in BCG-naïve adults 18 years of age or older.

The main questions it aims to answer are:

* Can the study drug help participants with this type of cancer? * Is the study drug safe? * What are the side effects of the study drug?

Researchers will compare TARA-002 to chemotherapy to see if TARA-002 works to treat NMIBC.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

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, or participants who received ≤2 doses of BCG within the 24 months prior to the most recent CIS diagnosis

Disqualifiers

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)

Trial design

Design model

Parallel

Treatments tested in this trial

  • TARA-002

    Drug

    Participants will receive 6 weekly instillations of TARA-002. Participants confirmed to have a CR at Week 12 will enter the maintenance treatment period and will receive 3 additional weekly instillations of TARA-002 every 3 months up to Month 19, and then 3 weekly doses at Month 25. Participants who are eligible for reinduction at Week 12 will receive 6 additional weekly instillations of TARA-002. Participants who undergo reinduction and are confirmed to have a CR at Week 24 will enter the maintenance regimen treatment period and will receive 3 weekly instillations of TARA-002 every 3 months up to Month 19, and then 3 weekly doses at Month 25.

  • Investigator's Choice of Intravesical Chemotherapy

    Drug

    Participants will receive 6 weekly instillations of Investigator's choice of intravesical chemotherapy. Participants confirmed to have a CR at Week 12 will enter the maintenance regimen treatment period and will receive one intravesical instillation of Investigator's choice of intravesical chemotherapy every 1 month up to Month 25.

Treatment groups

284 Participants
are divided into 2 treatment groups
Group A: TARA-002 (Arm A)Experimental treatment 1 intervention
Group B: Investigator's choice of intravesical chemotherapyActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Incidence of high-grade complete response

Incidence of high-grade complete response of intravesical TARA-002 compared to Investigator's choice of intravesical chemotherapy determined by cystoscopy, urine cytology, and bladder biopsy (if applicable)

Time frame
Month 6

Secondary outcomes

1

Duration of high-grade complete response

Duration of high-grade complete response of intravesical TARA-002 compared to Investigator's choice of intravesical chemotherapy

Time frame
Up to Month 60
2

Treatment emergent adverse events

Incidence and severity of treatment emergent adverse events (TEAEs) of intravesical TARA-002 compared to Investigator's choice of intravesical chemotherapy

Time frame
Up to Month 60
3

Treatment emergent serious adverse events

Incidence and severity of treatment emergent serious adverse events (TESAEs) of intravesical TARA-002 compared to Investigator's choice of intravesical chemotherapy

Time frame
Up to Month 60
4

High-grade complete response rate

High-grade complete response rate of intravesical TARA-002 compared to Investigator's choice of intravesical chemotherapy determined by cystoscopy, urine cytology, and bladder biopsy (if applicable)

Time frame
At Months 3, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42, 48, 54, and 60

Other outcomes

Sponsors and contacts

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