We also identified drugs that show higher specificity towards one or a few tumor types, e.g., ERK, MEK and BRAF inhibitors (AZ628, dabrafenib, PD0325901, PLX-4720, SB590885, SCH772984, and trametinib) for melanoma and colorectal cancer, ERBB/EGFR inhibitors (afatinib and sapitinib) for head-neck squamous cell carcinoma, and BCL2 inhibitors (ABT737, navitoclax and venetoclax) for low grade glioma and glioblastoma multiforme. This evidence concerns the gene BCL2 and head and neck squamous cell carcinoma.