GRM3 and neoplasm: Compared to control TGM (non-tumoral) neurons, ipsilateral TGM neurons from tumor-bearing animals harbored increased expression (>fourfold) in genes involved in neuronal signaling/receptors (Gabrg1, Gabra4, Grin2c, Grm3) and synaptic transmission (Gria2; Figure 2A; Supplementary file 1; Michetti et al., 2019).