CAGE1 and hepatocellular carcinoma: Other CTAs that were expressed in more than 10% of tumors are cancer antigen 1 (CAGE1; 14%), CT47A1 (27%), cancer/testis antigen 1B (CTAG1B; 10%), PAGE family member 1 (PAGE1; 18%), solute carrier organic anion transporter family member 6A1 (SLCO6A1; 26%), and testis-specific Y-encoded protein 1 (TSPY1; in 21% of male HCC patients and 0% of female HCC patients, as expected from a gene located on the Y-chromosome) [17].