Abstract: The present invention relates to: a method for evaluating response to treatment using a MEK 1/2 inhibitor in an individual diagnosed with a neurodegenerative disease; and a composition to be used for the method. Particularly, the method of the present invention comprises measuring, in a biological sample obtained from the individual with a neurodegenerative disease, the concentration of at least one biomarker selected from the group consisting of osteopontin, synaptotagmin-1, apolipoprotein-E, cathepsin B, HLA-DOB (HLA class II histocompatibility antigen, DO beta chain), and neurofilament light chain. According to the present invention, response to the MEK 1/2 inhibitor in the individual diagnosed with a neurodegenerative disease is monitored, and it is thereby possible to obtain useful information for managing the individual, such as determining the possibility of a treatment effect early on and determining whether to continue drug treatment and whether the amount needs to be adjusted.

Abstract: The present invention relates to administration methods and dosage regimens for treatment of neurodegenerative diseases using trametinib and markers. The administration methods and dosage regimens induce neural regeneration and changes in gene expression.