NTRK2 and neuroblastoma: Moreover, PHLDA1 downregulation was shown to affect differentiation-associated transcripts such as ID1, ID2 (encoding inhibitors of differentiation 1, 2), NTRK1, NTRK2 (encoding tropomyosin receptor A, B), and NGF (encoding nerve growth factor) in IMR-32 neuroblastoma cells (Durbas et al. 2016).