“…[6][7][8] Given the contrasting results on lung cancer progression and survival and the FGFR4 Gly388Arg polymorphism, we investigated the association of this and other polymorphisms in known FGFR4 ligands in a large cohort of lung adenocarcinoma (ADCA) patients with updated follow-up. Among several FGFs that bind FGFR4, namely FGF1, 2, 4, 6, 8, 9, 16, 17, 18 and 19, 9 we selected FGF9, based on its regulatory role in lung differentiation, 10 FGF18, because it plays a role in lung alveolar development, 11 and FGF19, because it binds specifically only FGFR4. 12 To test for a possible functional role of the FGFR4 Gly388Arg polymorphism, we examined the gene expression profile of normal lung in association with FGFR4 allele status.…”