Company: INDP
Filing Date: 2025-02-12
Form Type: S-1
Source: 0001493152-25-006068
Chunk: 84

Company: Indaptus Therapeutics, Inc.
Filing Date: 2025-02-12
Form: S-1
Chunk 84
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 one share of common stock and one warrant was $1.825, resulting in gross proceeds of approximately $3.0 million, before deducting placement agent and other offering expenses in the amount of approximately $0.5 million.

Background

Approved immunotherapies, such as Interluekin-2, Interferon-alpha and the more recently approved “checkpoint” and CAR-T therapies produce durable responses in a few percent to about fifty percent of patients across about a dozen out of over one hundred different types of cancer. Although checkpoint therapies are able to effectively cure many previously incurable patients, only about 15% of patients receiving this type of therapy respond. The main limitation of existing immunotherapies is that they each activate only one or a small number of key steps in either the innate or adaptive immune system, but there is general agreement that highly efficient cancer immunotherapy will require activation of both innate and adaptive immunity. The human body’s innate and adaptive immune systems are each capable of cell-mediated destruction of tumors if the tumor cells are recognized as foreign or damaged. Activation of innate and adaptive responses is also dependent on immune cells sensing the presence of “danger.” The most potent immune cell activating danger signals are released by bacteria and viruses in the setting of infection, and include agonists of immune cell receptors, such as Toll-Like (TLR), NOD and STING. Bacterial danger signals, including TLR agonists are called pathogen-associated molecular patterns (PAMPs) and can activate both innate and adaptive immune cells, including antigen-presenting cells, promoting innate (NK, macrophage) and adaptive (T cell-mediated) destruction of tumors.

The oldest form of cancer immunotherapy involves the provision of decoy danger signals from bacteria. It was based on the long-standing observation of tumor regression in the setting of bacterial infection. Treatment of cancer patients with heat-killed bacteria (“Coley’s toxins”) was established in 1891 and used for 70 years with significant success. For example, ≥5-year survival was reported for 45% of 432 inoperable sarcoma, lymphoma, melanoma, and carcinoma patients. Despite this success, several limitations led to the abandonment of this approach by the pharmaceutical industry. Although there was an indication that Coley’s toxins worked best when administered intravenously (i.v.), it was too toxic when given by this route, limiting the approach to local administration, which produced highly variable results. Another limitation was lack of knowledge about the mechanism of action, preventing optimization