IMUNON Announces First Patient Enrolled in Phase 1/2 Clinical Trial of IMNN-001 in Combination With Bevacizumab in Advanced Ovarian Cancer

IMUNON, Inc. recently announced the first patient in a Phase 1/2 clinical trial evaluating IMNN-001 in combination with bevacizumab in advanced ovarian cancer has begun treatment. IMNN-001 is a DNA-based interleukin-12 (IL-12) immunotherapy currently in Phase 2 clinical development for the localized treatment of advanced ovarian cancer (the OVATION 2 Study).

This Phase 1/2 trial is expected to enroll 50 patients with Stage III/IV advanced ovarian cancer. Patients undergoing frontline neoadjuvant therapy will be randomized 1:1 to receive standard chemotherapy plus bevacizumab vs. chemotherapy plus bevacizumab and IMNN-001. The trial’s primary endpoint is detection of minimal residual disease (MRD) by second look laparoscopy (SLL) and the secondary endpoint is progression-free survival (PFS). Initial SLL data are expected within one year following the completion of enrollment and final PFS data are expected approximately three years following the completion of enrollment. This trial will also include a wealth of translational endpoints aimed at understanding the clonal evolution and immunogenomic features of the MRD phase of ovarian cancer that is currently undetectable by imaging or tumor markers.

The principal investigator of this clinical trial is Amir Jazaeri, MD, Professor of Gynecologic Oncology and Reproductive Medicine at The University of Texas MD Anderson Cancer Center. The Koch Institute for Integrative Cancer Research at the Massachusetts Institute of Technology will also be involved in translational analyses using trial samples and animal models of ovarian cancer MRD, including biomarker and genomic analyses, which is expected to expand the Company’s knowledge of the treatment paradigm. These initiatives are a part of the Break Through Cancer Targeting Ovarian Cancer Minimal Residual Disease (MRD) Using Immune and DNA Repair Directed Therapies TeamLab collaboration.

Dr. Corinne Le Goff, President and Chief Executive Officer of IMUNON, said “This new trial testing the combination of IMNN-001 and bevacizumab in ovarian cancer starts as we have just announced very encouraging interim data for our OVATION 2 program evaluating the benefits of IMNN-001 in the neoadjuvant setting. We believe the combination of IMNN-001 and bevacizumab holds promise based on findings in our earlier pre-clinical animal studies, where the combination showed strong synergies. IMNN-001 as an innovative immunotherapy may transform the current ovarian cancer first line treatment landscape and provide new options to women diagnosed with Stage III/IV disease who face low cure rates of 15% or less.”

Epithelial ovarian cancer (EOC) is the fifth deadliest malignancy among women in the US. There are approximately 22,000 new cases of ovarian cancer every year and the majority (approximately 70%) are diagnosed in advanced Stages III and IV. EOC is characterized by dissemination of tumor in the peritoneal cavity with a high risk of recurrence (75%, Stages III and IV) after surgery and chemotherapy. Since the five-year survival rates of patients with Stages III and IV disease at diagnosis are poor (41% and 20%, respectively), there remains a need for a therapy that not only reduces the recurrence rate but also improves overall survival. The peritoneal cavity of advanced ovarian cancer patients contains the primary tumor environment and is an attractive target for a regional approach to immune modulation.

Designed using IMUNON’s proprietary TheraPlas platform technology, IMNN-001 (formerly GEN-1) is an IL-12 DNA plasmid vector encased in a nanoparticle delivery system that enables cell transfection followed by persistent, local secretion of the IL-12 protein. IL-12 is one of the most active cytokines for the induction of potent anticancer immunity acting through the induction of T-lymphocyte and natural killer cell proliferation. The company previously reported positive safety and encouraging Phase 1 results with IMNN-001 administered as monotherapy or as combination therapy in patients with advanced peritoneally metastasized primary or recurrent ovarian cancer and completed a Phase 1b dose-escalation trial (the OVATION 1 Study) of IMNN-001 in combination with carboplatin and paclitaxel in patients with newly diagnosed ovarian cancer. It announced full enrollment in the OVATION 2 Study in September 2022, interim data in September 2023 and expects to report topline data in the second quarter of 2024.

IMUNON is a fully integrated, clinical-stage biotechnology company focused on advancing a portfolio of innovative treatments that harness the body’s natural mechanisms to generate safe, effective and durable responses across a broad array of human diseases, constituting a differentiating approach from conventional therapies. IMUNON is developing its non-viral DNA technology across four modalities. The first modality, TheraPlas, is developed for the coding of proteins and cytokines in the treatment of solid tumors where an immunological approach is deemed promising. The second modality, PlaCCine, is developed for the coding of viral antigens that can elicit a strong immunological response. This technology may represent a promising platform for the development of vaccines in infectious diseases. The third modality, FixPlas, concerns the application of our DNA technology to produce universal cancer vaccines, also called tumor associated antigen cancer vaccines. The fourth modality, IndiPlas, is in the discovery phase and will focus on the development of personalized cancer vaccines, or neoepitope cancer vaccines.

The company’s lead clinical program, IMNN-001, is a DNA-based immunotherapy for the localized treatment of advanced ovarian cancer currently in Phase 2 development. IMNN-001 works by instructing the body to produce safe and durable levels of powerful cancer-fighting molecules, such as interleukin-12 and interferon gamma, at the tumor site. Additionally, the company is conducting IND-enabling preclinical studies for the development of a COVID-19 booster vaccine (IMNN-101) and a treatment for the LASSA virus (IMNN-102). The Company has also initiated preclinical work to develop a Trp2 tumor associated antigen cancer vaccine in melanoma (IMNN-201). We will continue to leverage these modalities and to advance the technological frontier of plasmid DNA to better serve patients with difficult-to-treat conditions. For more information, visit www.imunon.com.

Launched in February 2021, Break Through Cancer is a public foundation designed to find new solutions to the most intractable challenges in cancer. The foundation was launched with an extraordinary challenge pledge of $250 million from Mr. and Mrs. William H. Goodwin, Jr. and their family, and the estate of William Hunter Goodwin III. This represents one of the largest gifts ever in support of cancer research. Led by Dr. Tyler Jacks, the David H. Koch Professor of Biology and Director of the Koch Institute for Integrative Cancer Research at MIT, Break Through Cancer funds and supports collaborative research teams drawn from several of the country’s top cancer centers.

Multidisciplinary research teams are selected from across five participating institutions: Dana-Farber Cancer Institute, the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The University of Texas MD Anderson Cancer Center, Memorial Sloan Kettering Cancer Center, and MIT’s Koch Institute for Integrative Cancer Research.

Break Through Cancer is focused on historically highly challenging cancer types, including pancreatic cancer, ovarian cancer, glioblastoma and acute myelogenous leukemia for its initial programs, aided by the guidance of a scientific advisory board of cancer experts from outside the participating institutions. Teams will receive substantial funding to bring new approaches and new thinking as rapidly as possible to the clinical challenges of cancer.