GDPD5 (Glycerophosphodiester Phosphodiesterase Domain Containing 5) is a gene involved in lipid metabolism, particularly in breaking down glycerophosphodiesters into glycerol phosphate and alcohol. This activity supports membrane component turnover and regulates intracellular signaling. GDPD5 plays a role in lipid signaling pathways, with potential implications in metabolic and cardiovascular health.