Interleukin-6 was measured in 136 patients with MDD, (five patients did not have IL-6 testing due to sample availability) with mean IL-6 = 3.15 (±9.589) compared to 25 HC (11 controls did not have IL-6 testing) with mean IL-6 = 3.15 (±0.537). The gene discussed is IL6; the disease is major depressive disorder.