For example, in stem cancer cells, EGFR (Epidermal growth factor receptor) is a key tyrosine kinase that regulates the initiation, maintenance, and survival of cancer cells [19]; it has also been reported that mutations in this gene trigger the onset of other types of cancer [20], and it is known that in GC, EGFR acts as an oncogene [21]. This evidence concerns the gene EGFR and cancer.