Therefore, the normalized RNA-Seq data of CTSD, CTSL and CTSS from 107 patients of three oral cancer anatomic subtypes (base of tongue, buccal mucosa and floor of mouth) from TCGA (The Cancer Genome Atlas) database (https://tcga-data.nci.nih.gov/tcga/) were selected for survival analyses. This evidence concerns the gene CTSL and lip and oral cavity carcinoma.