Amunix Pharmaceuticals, Inc., a biopharmaceutical company, discovers and develops protein and peptide therapeutics products for cancer. It focuses on XTEN, a half-life extension platform; XPAT (XTENylated Protease-Activated T Cell Engager) platform using its XTEN technology to analyze protease activity in the tumor microenvironment; and Protease Triggered Immune Activator (ProTIA), an immuno-oncology therapeutic. The company caters to the academic, biotechnology, and pharmaceutical sectors. It has strategic partnerships with Janssen, Biogen-Idec, Noxxon, Baxalta, Ambrx, Seattle Genetics, and Versartis. The company was formerly known as Amunix, Inc. Amunix Pharmaceuticals, Inc. was founded in 2006 and is headquartered in Mountain View, California.