Table 4 lists all drug targets that were differentially correlated between cancer and normal tissues. An example of a gene with highly correlated protein expression in cancer is receptor tyrosine-protein kinase erbB-2 (ERBB2), which is targeted in LUAD and LUSC that by ado-trastuzumab emtansine, afatinib, and trastuzumab. Another example is Proto-oncogene Tyrosine-protein Kinase (SRC), which is targeted by bosutinib, dasatinib, and ponatinib in COAD. Here, ERBB2 is linked to colon adenocarcinoma.