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
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.
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)
Single group
TARA-002
Biological/VaccineAll participants will receive 6 weekly instillations of TARA-002 at the established RP2D (First Treatment Period). Participants who are eligible for reinduction after the First Treatment Period will receive 6 additional weekly doses of TARA-002 instillation as part of the Second Treatment Period. Participants confirmed to have a complete response after the First Treatment Period will receive 3 additional weekly doses of TARA-002 instillation as maintenance during the Second Treatment Period. All eligible participants will receive 3 weekly doses of TARA-002 instillation as part of the Third Treatment Period (maintenance) at Months 6, 9, 12, 15, 18 and 24. Following the Third Treatment Period, all participants will continue to the Follow up Period from Month 27 until Month 60.
Cohort A and B: Incidence of high-grade Complete Response at any time according to central pathology after treatment with TARA-002
Cohort A: Incidence of high-grade Complete Response at any time by subgroup (BCG naive and BCG exposed > 24 months) according to central pathology after treatment with TARA-002
Cohort A and B: Duration of high-grade Complete Response rate at Months 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42, 48, 54, and 60 after treatment with TARA-002
Cohort A and B: High-grade Complete Response rate at Months 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 36, 42, 48, 54, and 60 after treatment with TARA-002
Cohort A and B: Duration of Complete Response (all recurrent bladder cancer, including low grade Ta) after treatment with TARA-002
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