PPARG and breast cancer: PPARγ is associated with differentiation, increased lipid accumulation, and inhibition of BC cell proliferation (Elstner et al. 1998; Mueller et al. 1998), and available evidence shows that DBP/MBP and BBzP/MBzP have moderate but consistent associations with PPARγ activation (Bility et al. 2004; Feige et al. 2007; Hurst and Waxman 2003).