On February 13, 2023, Tonix Pharmaceuticals, a leading clinical-stage biopharmaceutical firm, announced that it has exercised an option to acquire an exclusive license from Columbia University to develop a portfolio of fully human (TNX-3600) and murine (TNX-4100) monoclonal antibodies (mAbs) for the prophylaxis or treatment of SARS-CoV-2 infection. COVID-19 is caused by SARS-CoV-2. Tonix Pharmaceuticals and Columbia University announced a research collaboration and option agreement in 2020, which resulted in the development of the licensed mAbs.
Although the FDA granted emergency use authorization (EUA) to five mAb products containing seven distinct mAbs for either prophylaxis or treatment of COVID-19, none stayed available or functional since January 26, 2023, when the FDA stated that the last remaining mAb, Evusheld®, is no longer authorized. Previously, either FDA or the National Institutes of Health COVID Treatment Guidelines Panel had revoked recommendations or clearances for the other mAbs.
Until recently, the earlier EUA-approved products were obtained from the blood of humanized mice or COVID-convalescent patients. Columbia University's TNX-3600 fully human mAbs were generated utilizing a proprietary system that involved a human hybridoma fusion partner.
The firm feels that murine monoclonal antibodies, such as TNX-4100, have the capacity to generate antibodies with a high affinity that detect distinct epitopes on the SARS-CoV-2 spike protein. This is due to the fact that mice have a different antibodies repertoire than humans, and the technology for making antibodies optimizes the selection of relevant B cells via harvesting approach, immunization timing and screening platform.
About Tonix Pharmaceuticals
Founded in 2007, Tonix Pharmaceuticals is a clinical-stage biopharmaceutical firm committed to finding, acquiring, licensing, and developing therapies for the treatment and prevention of diseases and the alleviation of human suffering. Its pipeline is focused on rare diseases, immunology, infectious diseases, and central nervous system (CNS) product candidates. The company's immunology portfolio consists of biologics for the treatment of organ transplant rejection, cancer and autoimmunity. At the same time, its infectious disease portfolio includes next-generation COVID-19 vaccines and vaccinations against smallpox and monkeypox.