by IHC staining in SqCC improved response rate and an increase in OS of 2.6 months when treated ... expression by IHC : SqCC ADC (p 0.001) High expression level was correlated with increased Overall s ... . : FGFR1 amplification in 21% by SNP array / 3% of ADC Selective FGFR1 tyrosine kinase inhibitors (AZD