Metastasis suppressor protein 1 (MTSS1) is generally expressed in tissues such as thymus, spleen, uterus, prostate, colon, and peripheral blood, but is absent or has low expression in various cancers, including gastric [124], bladder [125], breast [126], and colorectal [127] malignancies, where its decreased transcription correlates with poor patient survival. Here, MTSS1 is linked to cancer.