A Phase 2, Multi-Arm, Multi-Cohort, Open-Label Study to Evaluate the Safety and Efficacy of Cretostimogene Grenadenorepvec in Participants With High-Risk Non-Muscle-Invasive Bladder Cancer (NMIBC)

INTRODUCTION

  • Org Study ID: CORE-008
  • Secondary ID: N/A
  • NCT ID: NCT06567743
  • Sponsor: CG Oncology, Inc.

BRIEF SUMMARY

This is a Phase 2, Multi-Arm, Multi-Cohort, Open-Label Study to Evaluate the Safety and Efficacy of Cretostimogene Grenadenorepvec in Participants with High-Risk Non-Muscle-Invasive Bladder Cancer.

DETAILED DESCRIPTION

In Cohort A, up to 50 participants will be enrolled with pathologically confirmed, CIS-containing, high-risk NMIBC (i.e., CIS with or without concomitant Ta/T1) who are naïve to BCG treatment. Participants will be randomized 1:1 to receive DDM and cretostimogene via the current (Arm 1) or an alternative instillation procedure (Arm 2).

Cretostimogene and DDM will be administered as a weekly induction course for the first 6 weeks with a reinduction course administered to patients who have CIS and/or high-grade Ta disease at the 3-month evaluation. Following induction, if no high-grade disease is detected, maintenance treatment will begin. This consists of a cycle of three weekly treatments every three months during the first year, and every six months during the second year, with an optional extension to the third year following the same six-month schedule.

Disease status will be assessed using urine cytology, complete bladder visualization (e.g., cystoscopy), upper tract assessment and and directed TURBT/biopsy (if indicated) every 3 months for the first 2 years after randomization and then every 6 months for a further 2 years or until disease recurrence.

  • Overall Status
    Recruiting
  • Start Date
    September 16, 2024
  • Phase
    Phase 2
  • Study Type
    Interventional

PRIMARY OUTCOMES

Primary Outcome 1 - Measure:

Primary Outcome 1 - Timeframe: N/A

CONDITION

  • High-Risk Non-Muscle-Invasive Bladder Cancer

ELIGIBILITY

Cohort A Key Inclusion Criteria:
* Pathologically confirmed BCG-naïve, CIS-containing (i.e., CIS with or without concomitant HG Ta/T1) high-risk NMIBC within 90 days of randomization.

- * Participants with BCG-naïve NMIBC should have either:
* No prior treatment with BCG OR

- * No treatment with BCG within the past 24 months prior to current pathological diagnosis OR

- * A maximum of 1 or 2 doses of BCG within the past 24 months prior to current pathological diagnosis.

- * All visible disease must be resected, and all CIS resected or fulgurated, as feasible within 90 days prior to randomization.

- * Acceptable baseline organ function.
Key Exclusion Criteria:
* Current or past history of muscle-invasive, locally advanced or metastatic bladder cancer.

- * High-grade disease in the upper urinary tract or prostatic urethra within 24 months of randomization or any history of muscle-invasive, locally advanced or metastatic disease in the upper urinary tract.

- * Significant immunodeficiency.

- * Pregnant or breastfeeding.

Gender: All

Minimum Age: 18 Years

Maximum Age: N/A

Healthy Volunteers: No

OFFICIAL INFORMATION

Name: Pat Keegan

Role: Study Director

Affiliation: CG Oncology

Overall Contact

Name: Rebecca Tregunna, MD, Andy Darilek

Phone: +1.949.419.6105, +1.406.628.5708

Email: Rebecca.Tregunna@cgoncology.com, andy.darilek@CGoncology.com

LOCATION

Facility Status Contact
Facility: Southern Urology (Urology America)
Lafayette, Louisiana 70508
United States
Status: Recruiting Contact: Contact
Jason Bourque, MD
337-422-3738
jasonbourque@gmail.com

Principal Investigator
Jason Bourque, MD

Facility: The Conrad Pearson Clinic (Urology America)
Germantown, Tennessee 38138
United States
Status: Recruiting Contact: Contact
Michael Granieri, MD
901-236-0957
mgranieri@conradpearson.com

Principal Investigator
Michael Granieri, MD

Facility: Urology Austin, PLLC (Urology America)
Austin, Texas 78745
United States
Status: Recruiting Contact: Contact
Brian Mazzarella, MD
512-410-3773
brian.mazzarella@urologyaustin.com

Principal Investigator
Brian Mazzarella