The present invention relates to novel uses of a compound of formula (I), or a tautomer and/or a pharmaceutically acceptable salt thereof, in treating a disorder associated with the PPP1R15A pathway and associated with protein misfolding stress and in particular with accumulation of misfolded proteins selected in the group of tauopathies, synucleinopathies, polyglutamine and polyalanine diseases, leukodystrophies, cystic fibrosis, multiple sclerosis, lysosomal storage disorders, amyloidosis diseases, inflammation, metabolic disorders, cardio-vascular disorders, osteoporosis, nervous system trauma, ischemia.