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1 results

  • FKBP5 as a possible moderator of the psychosis-inducing effects of childhood trauma

  • Dina Collip, Inez Myin-Germeys, Marieke Wichers, Nele Jacobs, Catherine Derom, Evert Thiery, Tineke Lataster, Claudia Simons, Philippe Delespaul, Machteld Marcelis, Jim van Os, Ruud van Winkel
  • Journal:
    The British Journal of Psychiatry / Volume 202 / Issue 4 / April 2013
    Published online by Cambridge University Press:
    02 January 2018, pp. 261-268
    Print publication:
    April 2013
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  • Background

    FK506 binding protein 5 (FKBP5) has repeatedly been shown to be a critical determinant of post-traumatic stress disorder (PTSD) and depression following childhood trauma.

    Aims

    To examine the role of FKBP5-trauma interactions in the partly stress-related psychosis phenotype.

    Method

    In 401 general population twins, four functional polymorphisms were examined in models of psychosis and Cortisol, and followed up in models of psychosis in three samples at different familial liability (175 controls, 200 unaffected siblings and 195 patients with a psychotic disorder).

    Results

    The most consistent finding was an interaction between childhood trauma and rs9296158/rs4713916 on psychotic symptoms and Cortisol in the twin sample, combined with a directionally similar interaction in siblings (rs4713916) and patients (rs9296158), A-allele carriers at both polymorphisms being most vulnerable to trauma.

    Conclusions

    Trauma may increase the risk of psychosis through enduring changes in the Cortisol feedback loop, similar to that for PTSD, suggesting comparable biological mechanisms for psychosis across diagnostic boundaries.