The EGFR family consists of four members: ErbB-1–HER1/epidermal growth factor receptor; ErbB-2–HER2; ErbB-3–HER3, and ErbB-4–HER4.67,68 EGFR mutations and upregulation drive cancer progression, highlighting EGFR as a promising therapeutic target.69 Here, ERBB2 is linked to cancer.