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EG-70

Phase 1

Superficial Bladder Cancer | Small molecule | Oncology |enGene Holdings Inc.|Trials Updated: Aug 7, 2026

EG-70 target and mechanism

Molecular targetnull
Target classNull
ModalitySmall molecule

Also known as EG-70 (phase 1)

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment350

FDA Designations

No designations recorded

EG-70 clinical trials

EG-70 · 1 trial · 3 indications

Phase 1 1
NCT04752722LEGEND Study: EG-70 in NMIBC Patients BCG-Unresponsive and High-Risk NMIBC Incompletely Treated With BCG or BCG-NaïveSuperficial Bladder Cancer
RECRUITING350 Analytics
PHASE1RECRUITING
LEGEND Study: EG-70 in NMIBC Patients BCG-Unresponsive and High-Risk NMIBC Incompletely Treated With BCG or BCG-Naïve
Superficial Bladder CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1: Nature, incidence, relatedness, and severity of all AEs and SAEs according to the CTCAE v5.0.
Approximately 2 years

The type, incidence, relatedness and severity of treatment emergent adverse events of EG-70 as assessed by NCI-CTCAE V5.0 will be monitored.

Phase 2: Percentage of patients with cystoscopic CR at any time, based on exam, urine cytology and appropriate biopsies.
Approximately 24 weeks

Complete response rate will be measured by determining the number of patients without recurrence of disease.

Phase 2: Nature, incidence, relatedness, and severity of treatment emergent adverse events (as assessed by CTCAE v5.0)
Approximately 3 years

The type, incidence, relatedness and severity of treatment emergent adverse events of EG-70 as assessed by NCI-CTCAE V5.0 will be monitored.

Secondary Endpoints

Phase 1: The number of patients who experience a DLT through the end of Cycle 1
Approximately 12 Weeks
Phase 1: CR rate to EG-70 by cystoscopy at approximately 12 weeks.
Approximately 12 weeks
Phase 2: Duration of response of the responding patients
Approximately 3 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1EXPERIMENTALDose escalation phase
Phase 2EXPERIMENTALCohort 1: Recommended Phase 2 dose (RP2D) with eligible BCG-unresponsive NMIBC patients with CIS, up to 4 cycles of treatment with EG-70. Patients in Complete Response continue to Maintenance Treatment. Cohorts 2A, 2B and 3: RP2D with eligible high-risk NMIBC patients with CIS who are BCG-naïve, BCG-exposed (incompletely treated with BCG) or BCG-unresponsive HG Ta/T1 papillary disease without CIS
Phase 1 Substudy Surfactant Bladder RinseEXPERIMENTALBCG-unresponsive NMIBC patients with CIS, up to 4 cycles of treatment with EG-70. Patients in Complete Response continue to Maintenance Treatment. Bladder Rinse Cohort: a 5-minute bladder rinse prior to administration of RP2D of detalimogene voraplasmid (EG-70) with a shortened administration time of 30 minutes.

Interventions

NameTypeDescription
EG-70 (phase 1)DRUGPatients 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.
EG-70 (phase 2) Master ProtocolDRUGUnder 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.
Surfactant Bladder Pre-Rinse and EG-70 (Substudy)DRUGPatients 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.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites102

Inclusion Criteria: BCG-unresponsive Patients: 1. BCG-unresponsive NMIBC with carcinoma in situ (CIS) with or without coexisting papillary Ta/T1 tumors who are ineligible for or have elected not to undergo cystectomy, and have experienced CIS disease within 12 months of treatment where: adequate B...

Countries:United StatesAustraliaCanadaFranceGermanyItalySouth KoreaSpainTaiwanUnited Kingdom
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Recent Changes (Last 90 Days)

MEDIUMOct 30, 2026NCT04752722Phase: PHASE1/PHASE2 → PHASE1
MEDIUMOct 30, 2026NCT04752722Phase: PHASE1/PHASE2 → PHASE1
MEDIUMOct 30, 2026NCT04752722Phase: PHASE1/PHASE2 → PHASE1

Frequently asked questions about EG-70

What is EG-70 used for?

EG-70 is an investigational therapy being developed for superficial bladder cancer, including non-muscle invasive bladder cancer with carcinoma in situ. It is being studied in patients whose disease is BCG-unresponsive, who are high-risk and incompletely treated with BCG, or who are BCG-naive.

Who is developing EG-70?

EG-70 is being developed by enGene Holdings Inc., which trades under the ticker ENGN. The company is running the clinical program for the asset in non-muscle invasive bladder cancer.

What phase is EG-70 in?

EG-70 is in Phase 1 clinical development. It is investigational and is being evaluated in a single recruiting study, the LEGEND trial, which is enrolling an estimated 350 participants across multiple countries.

What clinical trial is EG-70 in?

EG-70 is being studied in the LEGEND trial, registered as NCT04752722. The Phase 1 study is recruiting adults aged 18 and older of all sexes in the United States, Australia, Canada, France, Germany, Italy, South Korea, Spain, Taiwan, and the United Kingdom.

Is EG-70 the same as EG-70 (phase 1)?

Yes, EG-70 (phase 1) refers to the same asset as EG-70. The parenthetical simply denotes the current Phase 1 stage of clinical development for enGene Holdings' bladder cancer candidate.

What types of bladder cancer is EG-70 being studied in?

The LEGEND study enrolls patients with superficial bladder cancer, including non-muscle invasive bladder cancer with carcinoma in situ and non-muscle invasive bladder cancer more broadly. It includes BCG-unresponsive and high-risk patients incompletely treated with BCG, as well as BCG-naive patients.