In addition to gene fusions, several studies have also characterized the genomic profile of NTRK. Light et al. reported that NTRK1/3 were highly expressed in neuroblastoma patients with a better prognosis, whereas NTRK2 was highly expressed in neuroblastoma patients with a poor prognosis (Light et al., 2012). Here, NTRK1 is linked to neuroblastoma.