ERBB2 and medullary thyroid gland carcinoma: We show in Table 3 that the deleterious variant status was significantly correlated with six factors including age at the first diagnosis (P = 0.0012), interval between diagnosis of the two tumors (P = 0.0211), at least one TNBC (P = 0.0056), at least one medullary carcinoma (P = 0.0146), both tumors HR negative (P = 0.0114) and both tumors HER2 negative (P = 0.0026).