In particular, the expression of both YY1 and BCL2L15 was analyzed in the GSE28702 dataset (Yagi, 83 CRC samples), consisting of 56 primary tumors and 27 metastatic lesions (23 from liver, 1 from lung and 3 from peritoneum), obtained from patients before any chemotherapy or radiotherapy. The gene discussed is YY1; the disease is colorectal carcinoma.