A Randomized Phase 3 Trial Evaluating the Safety & Efficacy of IP IMNN-001 Administered in Combination w/ Standard Neoadjuvant & Adjuvant Chemotherapy in Newly Diagnosed Patients w/ Advanced EOC, Fallopian Tube or Primary Peritoneal Cancer

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Investigational drug late phase More information Active drug More information Moderate burden on patient More information

Trial Details

Sponsor: Imunon (industry)

Phase: 3

Start date: July 9, 2025

Planned enrollment: 500

Trial ID: NCT06915025
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More trial details at ClinicalTrials.gov More info

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chevron Show for: IMNN-001 (GEN-1)

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Goal: To determine whether adding intraperitoneal IMNN-001 to standard neoadjuvant and adjuvant carboplatin/paclitaxel, followed by standard maintenance therapy, improves overall survival and other efficacy measures in newly diagnosed advanced epithelial ovarian, fallopian tube, or primary peritoneal cancer.

Patients: Female patients ≥18 years with histologically confirmed high-grade, non-mucinous epithelial ovarian, fallopian tube, or primary peritoneal cancer, FIGO IIIB/C–IV, eligible for neoadjuvant chemotherapy. ECOG 0–2, adequate marrow, renal, hepatic, and neurologic function, and availability of tumor tissue for HRD vs HRP biomarker status. Key exclusions include low-grade or non-epithelial histologies, active autoimmune disease requiring therapy, significant GI complications (e.g., obstruction, fistula, perforation), prior abdominal/pelvic radiation or chemotherapy, planned bevacizumab use, uncontrolled infection, or conditions precluding IP catheter placement.

Design: Randomized, adaptive, open-label, multicenter trial with 1:1 allocation to chemotherapy plus IMNN-001 versus chemotherapy alone. Stratified by homologous recombination status (HRD vs HRP) and disease stage. Independent DMC oversight. Planned enrollment of 500 with standard-of-care maintenance allowed in both arms.

Treatments: Both arms receive paclitaxel 175 mg/m2 IV over 3 hours plus carboplatin AUC 6 IV over 1 hour on Day 1 every 3 weeks for 6 cycles total (3 neoadjuvant, then interval debulking surgery, then 3 adjuvant). Standard-of-care maintenance with a PARP inhibitor (e.g., olaparib or niraparib) per guidelines. The experimental arm adds IMNN-001 100 mg/m2 intraperitoneally on Days 8 and 15 of cycle 1, then Days 1, 8, and 15 of cycles 2–6 (17 total IP doses), with IMNN-001 administered at least 30 minutes after carboplatin when given the same day. IMNN-001 is an intraperitoneal, DNA-mediated interleukin-12 therapy using a PEG-PEI-cholesterol lipopolymer to drive local IL-12 expression, enhancing IFN-γ–driven antitumor immunity in the peritoneal cavity with low systemic cytokine exposure. In a prior randomized phase 1/2 study (OVATION-2), IMNN-001 plus chemotherapy showed numerically longer PFS and OS versus chemotherapy alone and improved surgical response metrics; safety was manageable without cytokine release syndrome signals. A global phase 3 program is ongoing to confirm these findings.

Outcomes: Primary: Overall survival from randomization to death from any cause (48 months). Secondary: Chemotherapy Response Score (CRS1–3) at interval debulking; surgical cytoreduction status (R0/R1/R2); time to second-line therapy or death; and objective response rate by RECIST v1.1 prior to surgery.

Burden on patient: Moderate. Beyond standard neoadjuvant/adjuvant carboplatin/paclitaxel and interval debulking, participants in the experimental arm undergo intraperitoneal port placement and 17 IP administrations across 6 cycles with associated visits and monitoring, increasing procedure-related and visit burden. All participants require baseline tumor tissue acquisition for HRD vs HRP classification, which may involve laparoscopy or image-guided core biopsy if not already available. Maintenance PARP therapy is standard and does not add unusual burden. There are no intensive PK schedules described, but added IP procedures and additional treatment days elevate logistics, clinic time, and potential catheter-related risks compared with standard care alone.

Last updated: Oct 2025

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Sites (4)

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Washington University School of Medicine in St. Louis

St Louis, Missouri, 63110, United States

[email protected] / No phone

Status: Recruiting

Providence Cancer Institute

Portland, Oregon, 97213, United States

[email protected] / No phone

Status: Recruiting

Erlanger Health

Chattanooga, Tennessee, 37403, United States

[email protected] / No phone

Status: Recruiting

Providence Sacred Heart Medical Center & Children's Hospital

Spokane, Washington, 99204, United States

[email protected] / No phone

Status: Recruiting

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