F-star Therapeutics was a clinical-stage biopharmaceutical company pioneering bispecific antibodies for cancer immunotherapy. Its proprietary platform technology enabled the development of tetravalent (2+2) bispecific antibodies, which could simultaneously target two different antigens and elicit potent and focused immune activation in the tumor microenvironment. F-star had four clinical programs based on this technology: FS118, FS222, FS120, and SB 11285 (a next-generation STING agonist). These programs aimed to address unmet medical needs in various cancers by offering potentially first- and best-in-class drug candidates.
F-star's modular antibody technology also facilitated collaborations with major biopharmaceutical companies across oncology, immunology, and neurology. In June 2022, F-star entered into a definitive agreement to be acquired by invoX Pharma, a subsidiary of Sino Biopharmaceutical Limited, for approximately USD 161 million. The acquisition was completed in 2023, and F-star's assets, including its tetravalent bispecific antibody platform and clinical programs, became part of invoX Pharma's oncology research and development efforts.
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