TAC1 and colorectal cancer: Various genes related to malignant development have been investigated in the tissue and bodily fluids of colorectal cancer patients including Fibrillin-2 (FBN2), MAL, septin 9 (SEPT9), tachykinin-1 (TAC1), nel-like type 1 (NELL1), cellular retinoic acid binding protein 1 (CRABP1), somatostatin (SST), eyes absent homolog 4 (EYA4), and Vimentin (VIM) [59, 61, 62].