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Aptevo Debuts First Trispecific Antibody Candidate, APVO451, with Preclinical Data Demonstrating Immune Activation in Hard-to-Treat Solid Tumors

First data on Aptevo's new molecule presented at the Society for Immunotherapy of Cancer Annual Meeting SEATTLE, WASHINGTON / ACCESS Newswire / November 10, 2025 / Aptevo Therapeutics ("Aptevo" or the