A new study has found that a particular gene, MECP2, is overactivated in refugees with PTSD, as compared to those refugees who have experienced trauma but do not meet criteria for the disorder.

The MECP2 gene affects an individual's HPA axis, which regulates stress. In PTSD-affected refugees, the current study found, their MECP2 gene did not cause the HPA axis to deactivate their stress systems after a traumatic event was over.

To read the full study analysis, please visit the ScienceDaily website.