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.