CCND1 and head and neck squamous cell carcinoma: According to TCGA data analysis in N = 279 HNSCC tumors with previously identified HPV-status, aberrations (amplifications and mutations) of FGFR1 (10%), FGFR2 (2%), FGFR3 (2%), and CCND1 (31%) was frequently found in HPV(−) tumors.