NOS1AP and post-traumatic stress disorder: 2015, Kudlow et al. 2016, Mcneill et al. 2022, Weber et al. 2014). In PTSD, genetic variation in NOS1AP is associated with greater symptom burden, particularly among combat‐exposed individuals (Bruenig et al. 2017, Fronza et al. 2023, Lawford et al. 2013).