USP29 and cancer: Moreover, the pharmacological inhibition of CDK1 by RO‐3306 markedly decreased the migration (Figure 6F; Figure S6I,M, Supporting Information), invasion (Figure S6I,J,N, Supporting Information), the efficiency of mammosphere formation (Figure 6G; Figure S6I,K,O,P, Supporting Information), metastasis (Figure 6L,M) and sensitized cancer cells to chemotherapeutic drugs (Figure 6H–K; Figure S6Q,R, Supporting Information) in cells with the reconstitution of WT USP29.