FGFR1 and head and neck squamous cell carcinoma: Amplification of FGFR1 has been reported in 13%-22% squamous cell lung cancer [13, 19, 20], 20% breast cancer [12, 21], 10%-17% head and neck squamous cell carcinoma [22, 23], and 26.9% malignant peripheral nerve sheath tumor [24].