PMID- 27396498 OWN - NLM STAT- MEDLINE DCOM- 20180301 LR - 20220408 IS - 1557-9042 (Electronic) IS - 0897-7151 (Linking) VI - 34 IP - 4 DP - 2017 Feb 15 TI - Genetics and Other Risk Factors for Past Concussions in Active-Duty Soldiers. PG - 869-875 LID - 10.1089/neu.2016.4480 [doi] AB - Risk factors for concussion in active-duty military service members are poorly understood. The present study examined the association between self-reported concussion history and genetics (apolipoprotein E [APOE], brain-derived neurotrophic factor [BDNF], and D2 dopamine receptor genes [DRD2]), trait personality measures (impulsive-sensation seeking and trait aggression-hostility), and current alcohol use. The sample included 458 soldiers who were preparing to deploy for Operation Iraqi Freedom/Operation Enduring Freedom. For those with the BDNF Met/Met genotype, 57.9% (11/19) had a history of one or more prior concussions, compared with 35.6% (154/432) of those with other BDNF genotypes (p = 0.049, odds ratio [OR] = 2.48). APOE and DRD2 genotypes were not associated with risk for past concussions. Those with the BDNF Met/Met genotype also reported greater aggression and hostility personality characteristics. When combined in a predictive model, prior military deployments, being male, and having the BDNF Met/Met genotype were independently associated with increased lifetime history of concussions in active-duty soldiers. Replication in larger independent samples is necessary to have more confidence in both the positive and negative genetic associations reported in this study. FAU - Dretsch, Michael N AU - Dretsch MN AD - 1 United States Army Aeromedical Research Laboratory , Fort Rucker, Alabama. AD - 2 Human Dimension Division (HDD), Headquarters Army Training and Doctrine Command (HQ TRADOC) , Fort Eustis, Virginia. FAU - Silverberg, Noah AU - Silverberg N AD - 3 Division of Physical Medicine and Rehabilitation, University of British Columbia , Vancouver, British Columbia, Canada . AD - 4 GF Strong Rehabilitation Centre , Vancouver, British Columbia, Canada . AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Gardner, Andrew J AU - Gardner AJ AD - 6 Hunter New England Local Health District Sports Concussion Program and Centre for Stroke and Brain Injury, School of Medicine and Public Health, University of Newcastle , Newcastle, NSW, Australia . FAU - Panenka, William J AU - Panenka WJ AD - 7 Department of Psychiatry, University of British Columbia , Vancouver, British Columbia, Canada . FAU - Emmerich, Tanja AU - Emmerich T AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Crynen, Gogce AU - Crynen G AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Ait-Ghezala, Ghania AU - Ait-Ghezala G AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Chaytow, Helena AU - Chaytow H AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Mathura, Venkat AU - Mathura V AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Crawford, Fiona C AU - Crawford FC AD - 5 Roskamp Institute , Sarasota, Florida. FAU - Iverson, Grant L AU - Iverson GL AD - 8 Department of Physical Medicine and Rehabilitation, Harvard Medical School , Boston, Massachusetts. AD - 9 Spaulding Rehabilitation Hospital and Home Base, Red Sox Foundation and Massachusetts General Hospital Home Base Program , Boston, Massachusetts. AD - 10 Defense and Veterans Brain Injury Center , Bethesda, Maryland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20160801 PL - United States TA - J Neurotrauma JT - Journal of neurotrauma JID - 8811626 RN - 0 (ApoE protein, human) RN - 0 (Apolipoproteins E) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DRD2 protein, human) RN - 0 (Receptors, Dopamine D2) RN - 7171WSG8A2 (BDNF protein, human) SB - IM MH - Adult MH - Apolipoproteins E/genetics MH - *Brain Concussion/epidemiology/genetics/physiopathology MH - Brain-Derived Neurotrophic Factor/*genetics MH - Female MH - Humans MH - Male MH - *Military Personnel MH - Personality/*physiology MH - Receptors, Dopamine D2/genetics MH - Risk Factors MH - Sex Factors MH - United States/epidemiology MH - Young Adult OTO - NOTNLM OT - APOE OT - BDNF OT - DRD2 OT - concussion OT - genetics OT - mild traumatic brain injury OT - military OT - personality EDAT- 2016/07/12 06:00 MHDA- 2018/03/02 06:00 CRDT- 2016/07/12 06:00 PHST- 2016/07/12 06:00 [pubmed] PHST- 2018/03/02 06:00 [medline] PHST- 2016/07/12 06:00 [entrez] AID - 10.1089/neu.2016.4480 [doi] PST - ppublish SO - J Neurotrauma. 2017 Feb 15;34(4):869-875. doi: 10.1089/neu.2016.4480. Epub 2016 Aug 1.