Emactuzumab (Anti-CSF1R / M-CSFR / CD115) is a humanized monoclonal antibody directed against the tyrosine kinase receptor colony stimulating factor 1 receptor (CSF1R, CSF-1R, CD115), also known as macrophage colony-stimulating factor receptor (M-CSFR), with potential antineoplastic and immunomodulating activities MW : 146.94 KD.