Company: INDP
Filing Date: 2025-02-12
Form Type: S-1
Source: 0001493152-25-006068
Chunk: 85

Company: Indaptus Therapeutics, Inc.
Filing Date: 2025-02-12
Form: S-1
Chunk 85
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 and standardization of manufacturing, leading to another source of variability in clinical response. Due to this high variability, Coley’s toxins was not grandfathered-in as an approved drug by the FDA in 1963 and was supplanted by radiation and chemotherapy, despite the fact that these more modern approaches rarely produce durable responses in advanced cancer patients. Scientists now understand the mechanism of action of Coley’s toxins. Gram-negative bacteria contain multiple immune-stimulating danger signals, including TLR agonists such as lipopolysaccharide (LPS). Bacteria and purified or mono-specific TLR agonists, including LPS derivatives, have been validated and approved for prevention and treatment of early stage cancer. However, a safe and effective TLR agonist-based approach for advanced cancer has been elusive, possibly due to limitations in the ability of intratumorally administered, mono-specific TLR agonists to induce potent, systemic anti-tumor immune responses. In addition, the intratumoral approach is not feasible with all tumor types or patients. Our hypothesis is that an effective TLR agonist-based immunotherapy for advanced cancer will require invention of a packaged, multi-TLR agonist or multi-danger signal product that is modified or attenuated to allow safe i.v. administration.

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Our Approach

Our patented approach is based on the hypothesis that efficient activation of both innate and adaptive immune cells and associated anti-tumor immune responses can be achieved by using intact bacteria, containing multiple PAMPs, which have been attenuated so that they can be administered safely intravenously. Because LPS appears to be the most important contributor to both toxicity and efficacy, our patented product candidates are single strains of killed, non-pathogenic Gram-negative bacteria that have been treated in an effort to kill the bacteria and significantly reduce, but not completely eliminate, the cell surface LPS-endotoxin activity. Our product candidates are designed to have enhanced sufficient residual LPS to synergize with other PAMPs in the bacteria to efficiently prime innate and adaptive immune pathways. This approach has led to broad anti-tumor responses, including synergistic regressions and durable responses with five different classes of existing anti-tumor agents, in preclinical models, including checkpoint therapy, targeted antibody therapy and low-dose chemotherapy. Tumor eradication by our technology is designed to produce both innate and adaptive immunological memory and, importantly, not require provision of an exogenous tumor antigen, potentially due to the ability of LPS and other PAMPS to activate dendritic cells that have