ENPP2 (ectonucleotide pyrophosphatase/phosphodiesterase 2), also known as autotaxin, functions as a secreted lysophospholipase D that hydrolyzes lysophosphatidylcholine to produce lysophosphatidic acid (LPA), a critical signaling molecule 1. The enzyme's primary mechanism involves LPA production, which activates six distinct G protein-coupled receptors to regulate multiple cellular processes including angiogenesis, neural development, cell migration, and proliferation 12. ENPP2 is essential for embryonic development, as knockout mice exhibit intrauterine death due to vascular defects and impaired neural development 2. The protein demonstrates significant disease relevance, with altered expression associated with various pathological conditions. In chr8 lymphocytic leukemia, ENPP2 promotes cancer progression through the AMPK/SREBP1/FAS lipid metabolism pathway 3. In reproductive health, defective ENPP2-LPA signaling increases miscarriage risk by restricting decidual macrophage residence through impaired autophagy 4. Additionally, ENPP2 serves as a prognostic biomarker in hepatocellular carcinoma, where high expression correlates with poor outcomes 5. Clinical significance includes its potential as a therapeutic target, with ENPP2 inhibitors showing promise in treating autoimmune diseases and various cancers 63.