Background：Cabiralizumab FPA008 is a humanized monoclonal antibody directed against colony stimulating factor-1 receptor CSF1R, which is a member of the CSF1/PDGF receptor family of tyrosine-protein kinases. The developers of cabiralizumab including Apexigen, Bristol-Myers Squibb, Five Prime Therapeutics, University of Chicago and Yale University. Although it is reported to be designed for the treatment of tenosynovial giant cell tumor, the studies of treatment for pancreatic cancer, pigmented villonodular synovitis, malignant melanoma, non-small cell lung cancer, renal cell carcinoma and solid tumors also have been reported to be undergoing. The trails of pancreatic cancer and pigmented villonodular synovitis are in Phase II, while others are in Phase I. Orphan designation of cabiralizumab had been granted in the United States and European Commission for the treatment of pigmented villonodular synovitis.
