VERAXA Biotech (NASDAQ: VRXA) announced the initiation of cell line development for its lead BiTAC(R) T-cell engager ("BiTAC-TCE") program through a collaboration with ATUM. The partnership will utilize ATUM's Leap-In Transposase(R) technology to generate stable clonal cell lines that support IND/CTA-enabling activities and future clinical development. This move follows encouraging preclinical data presented at the 2026 American Association for Cancer Research ("AACR") Annual Meeting and is intended to support CMC development, including early process, analytical and formulation development, as well as the production of material for nonclinical studies.
The BiTAC-TCE platform is designed to improve tumor selectivity by splitting the T-cell engager into two complementary precursors that activate only when both bind separate tumor targets on the same cell. According to VERAXA, this conditional "AND"-gated approach could reduce off-tumor toxicity associated with conventional T-cell engagers while maintaining anti-cancer activity, potentially enabling higher dosing and a broader therapeutic window. The company believes this innovative mechanism addresses a key limitation of existing immunotherapies, which often cause significant side effects due to non-specific activation of T cells.
VERAXA is building a premier engine for the discovery and development of next-generation antibody-based therapeutics, including bispecific T cell engagers, bispecific ADCs and other innovative formats. Powered by a suite of transformative technologies and guided by rigorous quality-by-design principles, the company is rapidly advancing its pipeline of ADCs and proprietary BiTAC formats into clinical development and beyond. Founded on scientific breakthroughs made at the European Molecular Biology Laboratory (EMBL), a world-renowned institution known for pioneering life science research and cutting-edge technology, VERAXA aims to translate these innovations into effective cancer treatments.
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