Aptevo and Alligator to co-develop bispecific antibody for tumor-directed immunotherapy
Aptevo Therapeutics (Nasdaq: APVO) and Alligator Bioscience (Nasdaq Stockholm: ATORX), biotech companies based in the USA and Sweden respectively, have agreed to co-develop an immunotherapy bispecific antibody candidate, ALG.APV-527.
This candidate is based on Alligator’s first-generation bispecific antibody, ATOR-1016, and includes proprietary binding elements generated by the company’s antibody library. It was developed using Aptevo’s bispecific technology platform.
Working under a previously executed material transfer agreement, the companies have engineered and selected ALG.APV-527 as a lead bispecific antibody candidate, featuring a novel mechanism of action targeting 4-1BB, a member of the TNFR superfamily of co-stimulatory receptors found on activated T-cells, and an undisclosed tumor antigen widely overexpressed in a number of different types of cancer.
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