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LEGEND Study: EG-70 in NMIBC Patients BCG-Unresponsive and High-Risk NMIBC Incompletely Treated With BCG or BCG-Naïve

NCT04752722 · Status: RECRUITING · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 350

Last updated 2026-08-07

No results posted yet for this study

Summary

This study will evaluate the safety and efficacy of intravesical administration of detalimogene (EG-70) in the bladder and its effect on bladder tumors in patients with NMIBC.

This study study consists of two phases; a Phase 1 dose-escalation to establish safety and recommended the phase 2 dose, followed by a Phase 2 study to establish how effective the treatment is. The Study will include patients with: NMIBC with CIS for whom BCG therapy is unresponsive, and other high risk patients with NMIBC.

A Substudy will include a surfactant bladder rinse prior to the instillation of detalimogene in patients with NMIBC with CIS for whom BCG therapy is unresponsive.

Conditions

Interventions

DRUG

EG-70 (phase 1)

Patients will receive up to four cycles of EG-70 administered as a bladder instillation of a 50 mL volume of study drug via catheter with a targeted retention time of 60 minutes.One cycle lasts approximately 12 weeks and consists of either a 2-dose (Day 1 and Day 8) or 4-dose (Day 1, Day 8, Day 29 and Day 36) regimen.

DRUG

EG-70 (phase 2) Master Protocol

Under the Treatment Period, patients will receive 4 instillations per cycle for up to 4 cycles, of EG-70 at the RP2D defined in Phase 1, administered as a bladder instillation of a 50 mL volume of study drug via catheter with a targeted retention time of 60 minutes. One cycle lasts approximately 12 weeks. For Maintenance treatment 2 doses of EG-70 will be administered as a bladder instillation per 12-week cycle.

DRUG

Surfactant Bladder Pre-Rinse and EG-70 (Substudy)

Patients will receive via catheter a 50 mL volume of a 5-minute bladder rinse immediately prior to administration of 50 mL of detalimogene voraplasmid (EG-70) at the RP2D for 30 minutes. During the Treatment Period, patients will receive 4 instillations per cycle for up to 4 cycles of the sudy intervention. One cycle lasts approximately 12 weeks. For Maintenance treatment, 2 doses of the study intervention will be administered as a bladder instillation per 12-week cycle.

Sponsors & Collaborators

  • enGene, Inc.

    lead INDUSTRY

Principal Investigators

  • Christine Tosone, Ms, RAC · enGene, Inc.

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
SEQUENTIAL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-04-22
Primary Completion
2028-04-30
Completion
2030-10-30
FDA Drug
Yes

Countries

  • United States
  • Australia
  • Canada
  • France
  • Germany
  • Italy
  • South Korea
  • Spain
  • Taiwan
  • United Kingdom

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04752722 on ClinicalTrials.gov