Notes: BAY-4931 is a PPARγ inverse agonist.{68744} It acts as an inverse agonist in a co-repressor reporter assay with a peptide from nuclear receptor co-repressor 2 (NCOR2; EC50 = 5.8 nM). BAY-4931 is selective for PPARγ in reporter assays using CHO cells (IC50s = 0.14 and 0.4 nM for the mouse and human receptors, respectively) over PPARα and PPARδ in reporter assays using CHO cells (IC50s = >50 µM for both human receptors). BAY-4931 inhibits the proliferation of UM-UC-9 human bladder cancer cells that endogenously contain a focal amplification of PPARG, the gene encoding PPARγ (IC50 = 3.4 nM).