Individuals with the G/G allele at CNR1 rs2180619 trended to exhibit higher PTSD symptom severity at follow-up compared to those with at least one copy of A (p = 0.061), with women, in particular, demonstrating a trending significant difference in G/G compared to A/A (p = 0.073). The gene discussed is CNR1; the disease is post-traumatic stress disorder.