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The COMT Val158Met polymorphism is associated with lower prevalence of qualifying for screening criteria for post-traumatic stress disorder (PTSD) at 6-months following mild traumatic brain injury. White, did not meet PTSD qualification on screening criteria; red, met PTSD qualification on screening criteria. COMT = Catechol-O-Methyltransferase. red, met PTSD qualification on screening criteria.
