Tumor stage, grade, HER2 (Human Epidermal growth factor Receptor 2) status, primary surgery type and cancer specific death and overall death were significantly different between recurrent and non-recurrent patients, whereas tumor characteristic such as histology subtype and patient/treatment characteristics including age, adjuvant therapy, follow-up length between the recurrent and non-recurrent patients were not significantly different (Table 1). The gene discussed is ERBB2; the disease is cancer.