Study of CG0070 Given in Patients With Non-Muscle Invasive Bladder Cancer ,Unresponsive to Bacillus-Calmette-Guerin

Brief Summary
This is a Phase 3, open-label, single arm trial designed to evaluate Cretostimogene patients with NMIBC who have failed prior BCG therapy. Up to approximately 115 CIS bladder cancer patients with or without HG Ta or HG T1 papillary disease will be enrolled under the original protocol through Amendment 4, which will comprise Cohort C. Cohort C is closed to enrollment.

Under Amendment 5-1, Cohort P was added to enroll up to 70 patients with HG Ta/T1 papillary bladder cancer.

Under Amendment 6, the target number of patients enrolled in Cohort P was increased to 75. Cohort P is open to enrollment

Cohort C and Cohort P will be analyzed and reported separately. Patients will have had to fail prior BCG therapy which is defined as having persistent or recurrent disease within 12 months (Cohort C) or 6 months (Cohort P) following the completion of adequate BCG therapy for HGUC
Brief Title
Study of Cretostimogene Given in Patients With Non-Muscle Invasive Bladder Cancer ,Unresponsive to Bacillus-Calmette-Guerin
Detailed Description
Cohort C(All Countries) :

An open-label trial designed to evaluate Cretostimogene + DDM in patients with NMIBC who have failed prior BCG therapy. Single treatment arm that enrolled 115 patients with carcinoma in situ with or without concomitant high-grade Ta or T1 papillary disease

BCG failure is defined as a persistent or recurrent disease within 12 months of completion of adequate BCG therapy.

Cohort P(Japan and the United States Only):

To determine the all-cause High Grade Event Free Survival (HG-EFS) of cretostimogene in up to 75 patients with BCG-unresponsive HG Ta/T1 papillary disease without CIS.

BCG failure is defined as a persistent or recurrent disease within 6 months of completion of adequate BCG therapy.
Completion Date
Completion Date Type
Estimated
Conditions
Non Muscle Invasive Bladder Cancer
High-grade Ta/ T1 Papillary Disease Bladder Cancer
Eligibility Criteria
Cohort C Inclusion Criteria

In order to be eligible for participation in this trial, the patient must:

* Be ≥18 years of age (or legal age of majority in the jurisdiction) on day of signing informed consent.
* Have Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2.
* Have pathologically confirmed (WHO grading system employed for tumor grading) (Compérat 2019) BCG unresponsive CIS. Patients with BCG unresponsive CIS are those unlikely to benefit from, and who will not be receiving, further intravesical BCG. There is no maximum limit to the amount of prior BCG treatment, but maintenance BCG should be administered on a schedule consistent with standard induction-maintenance protocols (e.g., BCG weekly × 6 then weekly × 3 weeks administered at Months 3, 6, 12, 18, 24, and 36). Specifically, the definition of BCG unresponsive CIS will also require the following:

* Pathologically confirmed relapsed or persistent CIS (with or without HG Ta or HG T1 disease) within 12 months of completion (last dose) of adequate BCG treatment for HGUC (e.g., CIS, HG Ta, HG T1, or a combination of these HGUC pathologies).
* Completion of qualifying BCG treatment (e.g., "5+2" minimum exposure) within 12 months of the initial qualifying dose of BCG (e.g., induction and initial maintenance or re-induction cycle must be completed over no more than a 12-month period of time).
* Pathological confirmation of BCG unresponsive CIS within 8 weeks of study enrollment.
* CIS specimen must be predominantly urothelial (transitional cell) and have less than 50% variant (e.g., sarcomatoid, squamous etc. component) histology.
* No maximum limit to the amount of BCG administered but maintenance BCG should be administered on a schedule consistent with the SWOG 8507 regimen (Lamm 2000).
* Have all Ta and/or T1 disease resected and all CIS resected or fulgurated, as feasible, prior to study treatment (e.g., prior to Day 1 treatment).
* Ineligible to receive radical cystectomy (medically unfit) or refusal of radical cystectomy according to Investigator assessment.
* Demonstrate adequate organ function
* Patients must be willing to comply with study mandated cystoscopies, urine cytology, urograms, biopsies, and other procedures (including TURBT or other resection for all Ta/T1 disease) for the duration of the study. Patients who withdraw consent for these procedures will be withdrawn from the trial

Cohort P Inclusion Criteria

* Be ≥18 years of age (or legal age of majority in the jurisdiction) on day of signing informed consent
* Have ECOG performance status of 0 to 2.
* Have pathologically confirmed (WHO grading system employed for tumor grading) (Compérat 2019) BCG-unresponsive HG Ta/T1 papillary disease without CIS. Patients with BCG-unresponsive HG Ta/T1 papillary disease are those unlikely to benefit from and who will not be receiving further IVE BCG. There is no maximum limit to the amount of prior BCG treatment, but maintenance BCG should be administered on a schedule consistent with standard induction-maintenance protocols. Specifically, the definition of BCG unresponsive HG Ta/T1 papillary disease without CIS will also require the following:

* Pathologically confirmed recurrent HG Ta/T1 papillary disease without CIS within 6 months of completion (last dose) of adequate BCG treatment for HGUC (e.g., CIS, HG Ta, HG T1, or a combination of these HGUC pathologies).
* Patients with HG Ta: Completion of qualifying BCG treatment (e.g., "5+2" minimum exposure) within 12 months of the initial qualifying dose of BCG (e.g., induction and initial maintenance or re-induction cycle must be completed over no more than a 12-month period of time).
* Patients with HG T1: Patients may be eligible after the initial induction alone (5 of 6 doses of an induction course) as the qualifying BCG treatment.
* Completion (last dose) of qualifying BCG treatment within 12 months of study enrollment.
* Pathological confirmation of BCG-unresponsive HG Ta/T1 papillary disease without CIS within 14 days of study enrollment.
* All pathology specimens must be predominantly urothelial (transitional cell) and have less than 50% variant (e.g., sarcomatoid, squamous etc. component) histology.
* No maximum limit to the amount of BCG administered; however, there should be no more than 12 months between cycles of BCG
* Have all Ta and/or T1 disease resected, prior to study treatment (e.g., prior to Day 1 treatment).
* Ineligible to receive radical cystectomy (medically unfit) or refusal of radical cystectomy based on Investigator assessment.
* Demonstrate adequate organ function,
* Patients must be willing to comply with study-mandated cystoscopies, urine cytology, imaging, biopsies, and other procedures for the duration of the trial

Cohort C and Cohort P Key Exclusion Criteria:

* Has current or past history of muscle invasive (T2 or higher stage) or locally advanced (T3/T4, any N) or metastatic bladder cancer.
* Any HGUC as T1, HG Ta, or CIS in the upper genitourinary tract or prostatic urethra (including CIS of the urethra) within 24 months prior to enrollment OR any history of T2 or higher stage urothelial carcinoma in the upper genitourinary tract (kidneys, renal collecting systems, ureters).
* Has received systemic anti-cancer therapy, including investigational agents, within 4 weeks of Day 1.
* Has had prior systemic treatment (with the exception of checkpoint inhibitor therapy), radiation therapy, or surgery for bladder cancer other than TURBT or bladder biopsies.
* Has any of the following within the 6 months prior to starting study treatment: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, cerebrovascular accident, pulmonary embolus, uncontrolled hypertension, or uncontrolled congestive heart failure.
* Cannot tolerate study-related biopsies, IVE administration, or 1-hour bladder hold of cretostimogene.
* IVE therapy within 8 weeks prior to beginning study treatment with the exception of cytotoxic agents (e.g., Mitomycin C, gemcitabine, doxorubicin and epirubicin) when administered as a single instillation immediately following a TURBT procedure which is permitted 14 or more days prior to beginning study treatment
Inclusion Criteria
Inclusion Criteria

In order to be eligible for participation in this trial, the patient must:

* Be ≥18 years of age (or legal age of majority in the jurisdiction) on day of signing informed consent.
* Have Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2.
* Have pathologically confirmed (WHO grading system employed for tumor grading) (Compérat 2019) BCG unresponsive CIS. Patients with BCG unresponsive CIS are those unlikely to benefit from, and who will not be receiving, further intravesical BCG. There is no maximum limit to the amount of prior BCG treatment, but maintenance BCG should be administered on a schedule consistent with standard induction-maintenance protocols (e.g., BCG weekly × 6 then weekly × 3 weeks administered at Months 3, 6, 12, 18, 24, and 36). Specifically, the definition of BCG unresponsive CIS will also require the following:

* Pathologically confirmed relapsed or persistent CIS (with or without HG Ta or HG T1 disease) within 12 months of completion (last dose) of adequate BCG treatment for HGUC (e.g., CIS, HG Ta, HG T1, or a combination of these HGUC pathologies).
* Completion of qualifying BCG treatment (e.g., "5+2" minimum exposure) within 12 months of the initial qualifying dose of BCG (e.g., induction and initial maintenance or re-induction cycle must be completed over no more than a 12-month period of time).
* Pathological confirmation of BCG unresponsive CIS within 8 weeks of study enrollment.
* CIS specimen must be predominantly urothelial (transitional cell) and have less than 50% variant (e.g., sarcomatoid, squamous etc. component) histology.
* No maximum limit to the amount of BCG administered but maintenance BCG should be administered on a schedule consistent with the SWOG 8507 regimen (Lamm 2000).
* Have all Ta and/or T1 disease resected and all CIS resected or fulgurated, as feasible, prior to study treatment (e.g., prior to Day 1 treatment).
* Ineligible to receive radical cystectomy (medically unfit) or refusal of radical cystectomy according to Investigator assessment.
* Demonstrate adequate organ function
* Patients must be willing to comply with study mandated cystoscopies, urine cytology, urograms, biopsies, and other procedures (including TURBT or other resection for all Ta/T1 disease) for the duration of the study. Patients who withdraw consent for these procedures will be withdrawn from the trial

Cohort P Inclusion Criteria

* Be ≥18 years of age (or legal age of majority in the jurisdiction) on day of signing informed consent
* Have ECOG performance status of 0 to 2.
* Have pathologically confirmed (WHO grading system employed for tumor grading) (Compérat 2019) BCG-unresponsive HG Ta/T1 papillary disease without CIS. Patients with BCG-unresponsive HG Ta/T1 papillary disease are those unlikely to benefit from and who will not be receiving further IVE BCG. There is no maximum limit to the amount of prior BCG treatment, but maintenance BCG should be administered on a schedule consistent with standard induction-maintenance protocols. Specifically, the definition of BCG unresponsive HG Ta/T1 papillary disease without CIS will also require the following:

* Pathologically confirmed recurrent HG Ta/T1 papillary disease without CIS within 6 months of completion (last dose) of adequate BCG treatment for HGUC (e.g., CIS, HG Ta, HG T1, or a combination of these HGUC pathologies).
* Patients with HG Ta: Completion of qualifying BCG treatment (e.g., "5+2" minimum exposure) within 12 months of the initial qualifying dose of BCG (e.g., induction and initial maintenance or re-induction cycle must be completed over no more than a 12-month period of time).
* Patients with HG T1: Patients may be eligible after the initial induction alone (5 of 6 doses of an induction course) as the qualifying BCG treatment.
* Completion (last dose) of qualifying BCG treatment within 12 months of study enrollment.
* Pathological confirmation of BCG-unresponsive HG Ta/T1 papillary disease without CIS within 14 days of study enrollment.
* All pathology specimens must be predominantly urothelial (transitional cell) and have less than 50% variant (e.g., sarcomatoid, squamous etc. component) histology.
* No maximum limit to the amount of BCG administered; however, there should be no more than 12 months between cycles of BCG
* Have all Ta and/or T1 disease resected, prior to study treatment (e.g., prior to Day 1 treatment).
* Ineligible to receive radical cystectomy (medically unfit) or refusal of radical cystectomy based on Investigator assessment.
* Demonstrate adequate organ function,
* Patients must be willing to comply with study-mandated cystoscopies, urine cytology, imaging, biopsies, and other procedures for the duration of the trial

Cohort C and Cohort P
Gender
All
Gender Based
false
Keywords
high-grade Ta papillary disease
high-grade T1 papillary disease
carcinoma in situ
Bacillus-Calmette-Guerin unresponsive
Healthy Volunteers
No
Last Update Submit Date
Minimum Age
18 Years
NCT Id
NCT04452591
Org Class
Industry
Org Full Name
CG Oncology, Inc.
Org Study Id
CG3002S
Overall Status
Active, not recruiting
Phases
Phase 3
Primary Completion Date
Primary Completion Date Type
Estimated
Official Title
A Phase 3 Study of Cretostimogene Grenadenorepvec in Patients With Non-Muscle Invasive Bladder Cancer (NMIBC) Unresponsive to Bacillus-Calmette-Guerin (BCG)
Primary Outcomes
Outcome Description
To determine the Complete Response rate at any time in patients with BCG-unresponsive CIS with or without concomitant HG Ta/T1 papillary disease.
Outcome Measure
Cohort C:
Outcome Time Frame
36 months
Outcome Description
To determine the high-grade EFS of cretostimogene in patients with BCG-unresponsive HG Ta/T1 papillary disease without CIS.Ta/T1 papillary disease without CIS.
Outcome Measure
Cohort P:
Outcome Time Frame
36 months
Secondary Outcomes
Outcome Description
Median duration of response in patients with a CR or PR in subjects
Outcome Time Frame
36 months
Outcome Measure
Cohort C: Duration of response (DOR)
Outcome Time Frame
up to 60 months
Outcome Measure
Cohort C and Cohort P: Assess high-grade reoccurrence free survival (RFS)
Outcome Time Frame
up to 60 months
Outcome Measure
Cohort C and Cohort P: Assess progression free survival (PFS )
Outcome Time Frame
12 months
Outcome Measure
Cohort C:Complete Response rate at 12 months
Outcome Time Frame
up to 60 months
Outcome Measure
Cohort C and Cohort P : Cystectomy free survival
Outcome Time Frame
36 months
Outcome Measure
Cohort C and Cohort P: Evaluate the safety of Cretostimogene
Outcome Time Frame
up to 60 months
Outcome Measure
Cohort C: Assess overall survival
Outcome Time Frame
up to 60 months
Outcome Measure
Cohort C: Reoccurrence free survival
Start Date
Start Date Type
Actual
Status Verified Date
First Submit Date
First Submit QC Date
Std Ages
Adult
Older Adult
Maximum Age Number (converted to Years and rounded down)
999
Minimum Age Number (converted to Years and rounded down)
18
Investigators
Investigator Type
Principal Investigator
Investigator Name
Alexander Sankin
Investigator Email
asankin@montefiore.org
Investigator Phone