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.