Along the same lines, a review of PTSD research confirms elevated levels of inflammatory markers, including interleukin 1beta (Il-1ß), IL-6, tumor necrosis factor alpha (TNF-α), and interferon gamma (IFN-γ) in patients with PTSD compared to those in the healthy population [22, 23]. The gene discussed is IFNG; the disease is post-traumatic stress disorder.