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Objective Although intracellular beta amyloid (Aβ)accumulation is known as an early upstream event in the degenerative course of UDP-N-acetylglucosamine2-epimerase/N-acetylmannosamine kinase(GNE)myopathy,the process by which Aβdeposits initiate various degradative pathways, and their relationship have not been fully clarified.We studied the possible secondary responses after amyloid beta precursor protein (AβPP) deposition including unfolded protein response(UPR),ubiquitin proteasome system(UPS) activation and its correlation with autophagy system.