May have roles in neural function. Ectopic expression augments motility of gliomas. Also promotes axonal regeneration (By similarity). May also have functions in cellular differentiation (By similarity). Induces differentiation of fibroblast into myofibroblast and myofibroblast ameboid migration. Increases retinoic-acid regulation of lipid-droplet biogenesis (By similarity). Down-regulates the expression of TGFB1 and TGFB2 but not of TGFB3 (By similarity). May play a role in the regulation of alveolar generation. {ECO:0000250, ECO:0000269|PubMed:11358844, ECO:0000269|PubMed:16229809}. This is the function of ENSG00000134986 (NREP, neuronal regeneration related protein).