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An Update on the Psychiatric Genomics of Posttraumatic Stress Disorder (PTSD)
1Department of Psychiatry and Behavioral Neurosciences, Neuroscience Center for Anxiety, Stress and Trauma, Wayne State University School of Medicine, 6135 Woodward Avenue, Detroit, MI 48202, USA.
Abstract:
Posttraumatic Stress Disorder (PTSD) is a prevalent psychiatric condition characterized by intrusive thoughts, hyperarousal, avoidance, and negative cognitive alterations following traumatic events. While a significant portion of individuals experience trauma, only 5% to 30% develop PTSD, with certain groups at higher risk. Research indicates that PTSD's pathophysiology involves altered fear processing, neuroendocrine dysfunction, and immune system changes. Genetic studies, particularly twin studies, suggest a heritability estimate of 30% to 40% for PTSD. Initially focused on gene-environment interactions, recent advancements in genome-wide association studies have identified significant genetic markers enhancing understanding of PTSD's genetic underpinnings.
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