Subsequent IHC analysis also revealed that cells in tumor nodules were CD138+ (Figure S8A, Supporting Information), and the number of Ki‐67+ cells was reduced, suggesting that the recovery of p53 function and further suppression of NEK2 are beneficial for the p53‐deleted group of cells (Figure 8J, Figure S8B, Supporting Information). The gene discussed is TP53; the disease is neoplasm.