Among the differentially expressed genes, cellular retinoic acid binding protein 1 (CRABP1) primarily caught our attention, because of the highest fold increase upon knock-down of CIC in PC-3 cells (Supplementary Table 2) and its previously known pro-tumorigenic and pro-metastatic activity in mesenchymal tumors [18]. This evidence concerns the gene CRABP1 and mesenchymal cell neoplasm.