FABP4 and cancer: Fatty acids are a prominent source of anabolic substrates as well as reducing equivalents.[5] Cancer cells can utilize extrinsic fatty acids from the tumor microenvironment and tumor‐associated adipocytes through the fatty acid‐binding protein 4 (FABP4) and tumor cell‐induced lipolysis.[53] Different from the aforementioned therapeutic strategies that aim to inhibit metabolic pathways of cancer cells, Gu et al.