FGFR1 and neoplasm: Starska et al. [106] analyzed FGFR1 and FGFR3 mRNA/protein levels in LSCC, observing that they were significantly associated; an increase in FGFR1 and FGFR3 expression was found in more than 70% of LSCCs, and these markers were related to tumor invasion, loco-regional control, and clinical outcomes.