HRAS and head and neck squamous cell carcinoma: The sequencing analysis data show that, although the C-terminus of HRAS shows a non-conserved region, as compared to the sequence of KRAS from the NCBI database, no other mutations or differences were found in RAS genes between the tested HNSCC cells (CAL33, AMC-HN-8, and CNE-2) and the NCBI templates (Supplementary Figure S1).