Status of endogenous expression level of TrkC‐miR2 was identified through RT‐qPCR in astrocytoma (1321N1), glioblastoma (A172 and U87MG), medulloblastoma (Daoy) and neuroblastoma (SK‐N‐MC) human brain tumour cell lines (Figure 3A). This evidence concerns the gene NTRK3 and astrocytoma (excluding glioblastoma).