Cell death-inducing DNA fragmentation factor 45-like C, also called fat specific protein 27, was firstly found in mouse adipocytes, subsequently found in human liver cells, fat cells and other cells, which belongs to the Cide family. The study has reported that Cidec can promote fat storage and increase lipid droplet volume by locating on the lipid droplet surface, further regulate fat metabolism and the energy balance. Cidec can also play an important role in apoptosis.