“…Nonetheless, assuming that social support may help buffer against the development of PTSD symptoms, facilitating the enhancement of social support networks (e.g., one-to-one mentorship programs, peer support groups, social/relationship skills interventions, Vet-to-Vet programs) among highly trauma-exposed veterans at elevated genetic risk for PTSD may be an important aspect of prevention initiatives (e.g., Hogan, Linden, & Najarian, 2002;Pietrzak et al, 2009;Resnick & Rosenheck, 2008;Williams, Bambara, & Turner, 2012 and other trauma-affected populations. Fourth, given the strong association between APOE 4 carrier status and poorer cognitive functioning and dementia (e.g., Engelborghs et al, 2003;Wisdom et al, 2011), it remains to be determined whether cognitive impairment might influence the association between 4 and PTSD, as formal neuropsychological testing was not conducted in this cohort of veterans.…”