BC patients with detectable ESO Ab and/or ESO expression and characteristics of the corresponding tumors.

*ESO mRNA expression in frozen tumor specimens was assessed by RT-PCR. na, not available. †ER and PR expression was assessed by IHC staining of paraffin-embedded tumor specimens. ‡HER2 was assessed by IHC staining in paraffin-embedded tumor specimens and gene amplification was confirmed by FISH analysis. nd, not done. §Age at diagnosis. ∥SBR, Scarff-Bloom-Richardson tumor grade. **Lymph node metastasis with unknown primary (up). ††IDC, invasive ductal carcinoma. ‡‡MBC, medullary breast cancer. ∫ILC, invasive lobular carcinoma. §§D, dead; A, alive. ∫∫Known family history of breast cancer.