FGFR1 and urinary bladder cancer: The information we provide for the potential involvement of FGFR1 in neuroendocrine features of bladder cancer (Figure 5), identification of significantly increased nuclear localization of β-catenin in a cell line belonging to NB group (Figure 6) collectively strengthens the neuronal/neuroendocrine characteristics of the cell lines present in NB group according to our classifications.