In general, increased T‐cell numbers follow CSF‐1(R) blockade in a variety of tumour models, but rarely results in growth inhibition without additional therapies (Strachan et al, 2013; Mok et al, 2014; Zhu et al, 2014; Holmgaard et al, 2016; Seifert et al, 2016). The gene discussed is CSF1; the disease is neoplasm.