Autophagy is the process by which endogenous proteins and damaged organelles are destroyed intracellularly.autophagy is postulated to be essential for cell homeostasis and cell remodeling during differentiation, metamorphosis, non-apoptotic cell death, and aging. Reduced levels ofautophagy have been described in some malignant tumors, and a role forautophagy in controlling the unregulated cell growth linked to cancer has been proposed. FUNCTION: Plays a role inautophagy. SUBCELLULAR LOCATION: Cytoplasmic vesicle, autophagosome membrane, Multi-pass membrane protein. Also known as: ATG9,autophagy-related protein 9, APG9-like.