In overall, besides implicating ERBB2 as an important therapeutic target under neo‐adjuvant or adjuvant settings, we present the first evidence that the presence of KRAS mutations may preclude gallbladder cancer patients to respond to anti‐EGFR treatment, similar to a clinical algorithm commonly practiced to opt for anti‐EGFR treatment in colorectal cancer. The gene discussed is KRAS; the disease is colorectal cancer.