We have shown in ovarian cancer cells that mifepristone, ORG-31710, ulipristal, telapristone, 17α-hydroxy CDB-4124, and CDB-4453 (a demethylated derivative of CDB-4124) all increase p21cip1 and p27kip1 (Goyeneche et al. 2012, Gamarra-Luques et al. 2014). This evidence concerns the gene CDKN1B and ovarian cancer.