PPARG and Miyoshi myopathy: Furthermore, it is interesting that an early study showed that PPARγ antagonists (GW9662 and T0070907) exhibited more potent antiproliferative effects on MM cells than the PPARγ agonist pioglitazone, and that a combination of PPARγ antagonists and pioglitazone might exert a greater inhibitory effect on the growth of MM cells [80].