PASD1 and colorectal carcinoma: Three potential CD4 Th PASD1 peptides of 8 amino acids in length were studied and all of them were able to elicit interferon-γ responses in some CRC and polyps patients, with the PASD1 (1) and PASD1 (3) peptides being identified as the most immunogenic peptides in CRC and polyps, respectively.