Organoids will allow us to study the function of genes that are targets of the NF-Y/p53 complex activity. In these organoids, we will perform overexpression and/or silencing of these genes and assays of proliferation, invasion and motility. We will also perform functional assays in cocultures of the organoids with PBMCs from the same patients. This could allow the discovery of new pathways that could be targeted by targeted therapy and/or immunotherapy. Organoid preparation will be performed from fresh colorectal cancer tissue and liver metastasis following enzymatic digestion. Organoid culture medium and specific organic matrix will be used