Additionally, decreased interleukin 1A (IL1A) expression was observed in the dorsolateral prefrontal cortex (dlPFC) of post-mortem PTSD brains (Morrison et al., 2019), a finding that is concordant with reports of altered cytokine expression in peripheral blood of PTSD patients (Zieker et al., 2007; Mehta et al., 2011; Breen et al., 2018). The gene discussed is IL1A; the disease is post-traumatic stress disorder.