CSF1R and central nervous system cancer: In gliomas, myeloid cell depletion (De Palma et al, 2005; Zhai et al, 2011) or CSF‐1R inhibition (Pyonteck et al, 2013) has been shown to exert anti‐tumor effects or accelerated tumor growth (Galarneau et al, 2007; Stockmann et al, 2008).