Specifically, in GBM, the enzyme that is primarily responsible for PGE2 synthesis, cyclooxygenase-2 (COX2)/prostaglandin-endoperoxide synthase 2 (PTGS2), reportedly promotes cancer cell proliferation and migration [15, 16], suggesting that COX2 enhances arachidonic acid (AA) metabolism, which is necessary for the survival of GBM cells, to synthesize PGE2. Here, PTGS2 is linked to cancer.