In the OPC-like compartment, NTRK2 expression correlated with postsynaptic organization, axon guidance, neuronal projection guidance, neuronal migration, ERK signalling cascades and the AKT signalling cascade, consistent with the hypothesized role of TrkB in neuron-to-glioma synapses, consequent effects of AMPAR-mediated synaptic signalling on tumour migration29 and expected signalling consequences of TrkB activation. The gene discussed is NTRK2; the disease is glioma.