On January 20, 2026 Immunomic Therapeutics, Inc. ("ITI"), a privately held clinical-stage biotechnology company pioneering nucleic acid-based immunotherapy, reported that the U.S. Food and Drug Administration (FDA) has cleared ITI’s Investigational New Drug (IND) application for ITI-5000. This clearance allows ITI to initiate the first-in-human clinical trial evaluating ITI-5000, a UNITE-based self-amplifying RNA vaccine, as monotherapy and in combination with pembrolizumab (Keytruda), in patients with Stage II–III Triple-Negative Breast Cancer (TNBC).
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The Phase 1, multicenter, open-label, two-part study—known as VITALITI (VITAL-TNBC Study of ITI-5000)—is designed to assess safety, tolerability, and preliminary immunologic activity of ITI-5000 alone and in combination with pembrolizumab. TNBC represents approximately 15%–20% of breast cancer diagnoses and remains associated with poorer outcomes and fewer targeted treatment options, underscoring a substantial unmet medical need. Breast cancer is the fifth leading cause of cancer mortality globally.
ITI-5000 utilizes nucleic acid vaccine constructs engineered to preferentially deliver tumor-associated antigens (TAAs) to the MHC II compartment via LAMP-1, potentially enhancing antigen presentation, antibody generation, and CD4+ T-cell responses.
Pembrolizumab (Keytruda), a humanized monoclonal antibody and PD-1 inhibitor, is widely used in cancer immunotherapy and has demonstrated benefit across numerous tumor types, including TNBC.
"Preclinical data have demonstrated enhanced efficacy in animal models without additional safety concerns. The FDA’s clearance of our IND application for ITI-5000 marks a significant milestone for us as we advance this program into its first clinical trial," said DG Kim, Chief Executive Officer of ITI. "This achievement reflects years of innovative research and the dedication of our scientific and technical teams, and it brings us another step closer to offering a potentially transformative therapy for patients with TNBC."
Dr. Teri Heiland, Chief Scientific Officer of ITI, added, "The ITI-5000 program represents an important evolution of our UNITE technology, leveraging LAMP-mediated antigen presentation to drive robust CD4+ T cell activation. Our preclinical findings provide strong scientific rationale for advancing ITI-5000 into human studies, particularly in a disease area where new therapeutic approaches are urgently needed. We are excited to translate this promising data into the clinic and further explore the potential of this platform in TNBC."
ITI expects to begin patient enrollment in the second quarter of 2026 across up to eight U.S. clinical sites.
About UNITE
ITI’s investigational UNITE platform, UNiversal Intracellular Targeted Expression, leverages the ability to engineer chimeric proteins, directing antigen presenting cells to present antigens to the immune system through a targeted pathway and driving a robust immune response. UNITE vaccines are distinct in that they combine two components: nucleic acid constructs that encode a specific antigen and an endogenous Lysosomal Associated Membrane Protein (LAMP-1) sequence. The UNITE platform harnesses LAMP-1 as a means of presenting the vaccine target to the immune system, resulting in antibody production, inflammatory cytokine release, and establishing critical immunological memory, something that other vaccine approaches commonly lack. This approach could put UNITE technology at the crossroads of immunotherapies in multiple indications, including cancer, human allergy, animal health, and infectious disease. Preclinical data is currently being developed to explore whether LAMP-1 nucleic acid constructs may amplify and activate the immune response in highly immunogenic tumor types and used to create immune responses in tumor types that otherwise do not provoke an immune response.
(Press release, Immunomic Therapeutics, JAN 20, 2026, View Source [SID1234662095])