CSF-1R

JNJ-28312141 is an orally active CSF1R inhibitor (Colony-stimulating factor-1 receptor, CRF1R) and also a FLT3 inhibitor. CSF1R is expressed by many tumors and is a growth factor for macrophages and mediates osteoclast differentiation. JNJ-28312141 represents a new agent with potential therapeutic activity in acute myeloid leukemia and in settings where CSF-1-dependent macrophages and osteoclasts contribute to tumor growth and skeletal events.

TE-952 is a potent, oral active and selective Type II inhibitor of colony stimulating factor-1 receptor (CSF-1R or cFMS, type III receptor tyrosine kinase), with IC50 values of 13 nM and 261 nM for CSF1R and TrkA , respectively. Effective against a mouse collagen-induced model of arthritis.

c-Fms-IN-8 (compound 4a) is a colony stimulating factor-1 receptor (CSF-1R, c-FMS) Type II inhibitor, with an IC50 of 9.1 nM.

CSF1R-IN-1 is a CSF1R inhibitor with an with an IC50 of 0.5 nM.