LPIN2 (Lipin 2): LPIN2 is a protein that plays a key role in lipid metabolism and energy production, particularly in the conversion of phosphatidic acid to diacylglycerol, an essential step in triglyceride and phospholipid synthesis. It also contributes to the regulation of gene expression linked to lipid metabolism and inflammation. Mutations in LPIN2 are associated with Majeed syndrome, which is characterised by chronic recurrent multifocal osteomyelitis, dermatitis, and dyserythropoietic anaemia, underscoring its importance in both metabolic and immune processes.