The invention is directed to substituted 
isoquinoline derivatives and uses thereof. Specifically, the invention is directed to compounds according to Formula I and the use of compounds of Formula (I)in treating 
disease states: (I) wherein R1, R2, R3, R4, R5, R6, R7 and X are as defined herein. The compounds of the invention are inhibitors of PERK and can be useful in the treatment of 
cancer, pre-cancerous syndromes and diseases associated with activated 
unfolded protein response pathways, such as Alzheimer's 
disease, 
spinal cord injury, 
traumatic brain injury, 
ischemic stroke, 
stroke, Parkinson 
disease, diabetes, 
metabolic syndrome, metabolic disorders, Huntington's disease, Creutzfeldt-Jakob 
Disease, fatal familial 
insomnia, Gerstmann-Str ussler-Scheinker syndrome, and related prion diseases, 
amyotrophic lateral sclerosis, progressive 
supranuclear palsy, 
myocardial infarction, cardiovascular disease, 
inflammation, organ 
fibrosis, chronic and 
acute diseases of the liver, 
fatty liver disease, 
liver steatosis, 
liver fibrosis, chronic and 
acute diseases of the 
lung, 
lung fibrosis, chronic and 
acute diseases of the 
kidney, 
kidney fibrosis, 
chronic traumatic encephalopathy (CTE), 
neurodegeneration, dementias, frontotemporal dementias, tauopathies, Pick's disease, Neimann-Pick's disease, 
amyloidosis, 
cognitive impairment, ather osclerosis, ocular diseases, arrhythmias, in 
organ transplantation and in the transportation of organs for 
transplantation. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The inventionis still further directed to methods of inhibiting PERK activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.