PLA2G4F (phospholipase A2 group IVF) is a calcium-dependent phospholipase that catalyzes hydrolysis of the sn-2 ester bond in membrane phospholipids, with particular selectivity for arachidonoyl groups 1. This activity releases arachidonic acid, a critical precursor for eicosanoid biosynthesis 1. In myocardial mitochondria, PLA2G4F plays a major role in channeling arachidonate to cardioprotective epoxyeicosatrienoate (EET) formation 1. PLA2G4F participates in inflammatory and metabolic pathways relevant to multiple disease contexts. In osteoarthritis synovitis, PLA2G4F is strongly implicated in pathogenic mechanisms involving MAPK signaling 2. Elevated PLA2G4F expression in alcoholic liver disease activates necroptosis through D-erythro-sphingosine accumulation; suppressing PLA2G4F expression provides hepatoprotection 3. In prostate cancer, comprehensive PLA2 family analysis showed all members overexpressed in tumor tissue, with some PLA2 variants associated with favorable prognosis 4. Genetic studies reveal PLA2G4F involvement in neurodegenerative disease, with suggestive associations in Parkinson's disease cohorts 5. Loss-of-function mutations in arachidonic acid metabolism pathway genes, including those affecting PLA2G4F signaling, correlate with improved oral cancer survival 6. Epigenetic regulation of PLA2G4F expression influences placental steroid metabolism in response to endocrine disruptors 7. PLA2G4F also functions as a hub protein in endometrial receptivity networks 8.