TGFB1 and leiomyoma: Although IL6, TNF-α, IFN-γ, G-CSF, and TGF-β1, which have been implicated in leiomyoma development [58, 59], were expressed in both cell types, the most notable finding was the significantly different expression of Th2 and Th1/Th17 pathways in LPCs and MPCs.