Salubrinal is a cell-permeable inhibitor of eukaryotic translation initiation factor 2 alpha (eIF2 ) dephosphorylation exhibiting an IC50 of approximately 15 M It prevents phosphatase complexes from removing phosphate groups from eIF2 thus maintaining its phosphorylated state and modulating protein synthesis during cellular stress responses Salubrinal is utilized experimentally in vitro to investigate apoptotic mechanisms related to endoplasmic reticulum (ER) stress For instance it provides cytoprotection against ER stress-induced apoptosis triggered by protein glycosylation inhibitors or ER-Golgi trafficking inhibitors In vivo murine models employ salubrinal to explore cellular processes underlying oxidative stress and nephrotoxicity induced by chemotherapeutic treatments through modulation of ER stress-associated apoptosis signaling pathways Currently no clinical trials involving salubrinal have been reported