FGFR1 and lung cancer: An FGFR1-amplified lung cancer cell line (NCI-H520) was not sensitive to PD173074 or AZD4547 (17, 48), and FGFR1-amplified squamous lung cell lines derived from metastatic sites (HCC95 and SKMES1) were insensitive to ponatinib and AZD4547 (19, 21).