Based on the univariate analysis of the GLM, we found significant differences in the years of education, cytokines (IL-1β, IL-2, IL-6, IL-12p70, IL-17A, IFNγ, TNFα, IL-10, and IL-13), and depression severity (indicated by the PHQ) among the groups. The gene discussed is IL17A; the disease is major depressive disorder.