To verify the oncogenic functions of PDCD11 in representative p53‐mutant cancer cells, we generated MDA‐MB‐231 breast cancer and HT‐29 colon cancer cells that were stably transduced with lentiviral shLuc, shPDCD11#1, or shPDCD11#2. This evidence concerns the gene PDCD11 and malignant colon neoplasm.