NTRK1 and neoplasm: The FGFR3 is a tyrosine kinase receptor, the constitutive activation of which is involved in skeletal malformations (Bellus et al, 2000) and drives tumour cell growth in bladder and cervix cancer (Cappellen et al, 1999; Hernandez et al, 2006; Mhawech-Fauceglia et al, 2006).