A method for treating a subject afflicted with an autoimmune disease with a pharmaceutical composition comprising glatiramer acetate and a pharmaceutically acceptable carrier, comprising the steps of administering a therapeutic amount of the pharmaceutical composition to the subject, determining whether the subject is a glatiramer acetate responder or a glatiramer acetate hypo-/non-responder by measuring the value of a biomarker selected from the group consisting of IL-10 concentration, IL-17 concentration, IL-18 concentration, TNF-α concentration, BDNF concentration, caspase-1 concentration, IL-10/IL-18 ratio and IL-10/IL-17 ratio in the blood of the subject, and comparing the measured value to a reference value for the biomarker to identify the subject as a glatiramer acetate responder or a glatiramer acetate hypo-/non-responder, and continuing the administration if the subject is identified as a glatiramer acetate responder, or modifying treatment of the subject if the subject is identified as a glatiramer acetate hypo-/non-responder.