FGFR2 and non-small cell lung carcinoma: Correlations of described FGFRs genetic changes with FGFRs expression level in Sq-NSCLC revealed statistically significant but weak association of FGFR2 c.2398dup (p.(Ser800PhefsTer22)) variant with the increased FGFR2 mRNA expression level (p = 0.02, r = 0.36).