FGF23 and neoplasm: The Top 3 genes that were upregulated upon tumor growth were found to be Sprr1a (small proline-rich protein 1A, FC = 19.09, p < 0.01), Gal (Galanin, FC = 5.11, p < 0.0001) and FGF23 (fibroblast growth factor receptor 23, FC = 4.22, p < 0.001) (Fig. 4C).