The number of FGFR3-mutated TaG3 was too small to identify them as a separate group (2 tumors in the first data set and 1 tumor in the second data set), but they could not either be included in the TaG1/TaG2 group due to their different clinical and molecular characteristics so they were not considered in the analysis. The gene discussed is FGFR3; the disease is neoplasm.