CD40L wasable to partially rescue normal and malignant B cells from PPARγ ligand-induced apoptosis by activating NF-κB.Similarly, Piva et al. reported 15d-PGJ2-induced apoptosis in humanBurkitt's lymphomas and multiple myeloma cell lines through inhibition of NF-κBactivity. Here, PPARG is linked to plasma cell myeloma.