In addition an inhibition of mast/stem cell growth factor (KIT), FMS-like tyrosine kinase 3 (FLT-3), TIE-2 (TEK tyrosine kinase, endothelial), tropomyosin-related kinase B (TRKB), and AXL lead to tumor regression (Roy et al., 2015). The gene discussed is NTRK2; the disease is neoplasm.