Table 3.

Frequency of cancer–testis antigen coexpression in esophageal, gastric, and colon cancer (percentage of all cancer–testis-positive cases in parentheses)

Express at least one cancer–testis antigenExpress at least two cancer–testis antigensExpress at least three cancer–testis antigensExpress at least four cancer–testis antigens
Esophagus2621 (81%)14 (54%)12 (46%)
 Adenocarcinoma1311 (85%)5 (38%)4 (31%)
 SCC1310 (77%)9 (69%)8 (62%)
Stomach96 (67%)5 (56%)5 (56%)
Colon153 (20%)1 (7%)0 (0)

Abbreviation: SCC, squamous cell carcinoma.