This article summarizes available information on the effects of pentacyclic triterpenoids on the PI3K/AKT/mTOR, MAPK/ERK, NF-κB, JAK/STAT, Notch, HIF-1α, TGF-β, Wnt/β-catenin, Hippo, and Hedgehog signaling pathways in ovarian cancer cells. This evidence concerns the gene HIF1A and ovarian cancer.