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Misganaw B, Guffanti G, Lori A, Abu-Amara D, Flory JD, Mueller S, Yehuda R, Jett M, Marmar CR, Ressler KJ, Doyle FJ. Polygenic risk associated with post-traumatic stress disorder onset and severity. Transl Psychiatry 2019; 9:165. [PMID: 31175274 PMCID: PMC6555815 DOI: 10.1038/s41398-019-0497-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/07/2019] [Indexed: 01/14/2023] Open
Abstract
Post-traumatic stress disorder (PTSD) is a psychiatric illness with a highly polygenic architecture without large effect-size common single-nucleotide polymorphisms (SNPs). Thus, to capture a substantial portion of the genetic contribution, effects from many variants need to be aggregated. We investigated various aspects of one such approach that has been successfully applied to many traits, polygenic risk score (PRS) for PTSD. Theoretical analyses indicate the potential prediction ability of PRS. We used the latest summary statistics from the largest published genome-wide association study (GWAS) conducted by Psychiatric Genomics Consortium for PTSD (PGC-PTSD). We found that the PRS constructed for a cohort comprising veterans of recent wars (n = 244) explains a considerable proportion of PTSD onset (Nagelkerke R2 = 4.68%, P = 0.003) and severity (R2 = 4.35%, P = 0.0008) variances. However, the performance on an African ancestry sub-cohort was minimal. A PRS constructed with schizophrenia GWAS also explained a significant fraction of PTSD diagnosis variance (Nagelkerke R2 = 2.96%, P = 0.0175), confirming previously reported genetic correlation between the two psychiatric ailments. Overall, these findings demonstrate the important role polygenic analyses of PTSD will play in risk prediction models as well as in elucidating the biology of the disorder.
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Affiliation(s)
- Burook Misganaw
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Guia Guffanti
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, MA, USA
| | - Adriana Lori
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Duna Abu-Amara
- Steven and Alexandra Cohen Veterans Center for the Study of Posttraumatic Stress and Traumatic Brain Injury; and Department of Psychiatry, NYU School of Medicine, New York, NY, USA
| | - Janine D Flory
- Department of Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
- The Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Susanne Mueller
- Center for Imaging of Neurodegenerative Diseases, San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
| | - Rachel Yehuda
- Department of Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
- The Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Marti Jett
- Integrative Systems Biology, United States Army Medical Research and Material Command, United States Army Center for Environmental Health Research, Frederick, MD, USA
| | - Charles R Marmar
- Steven and Alexandra Cohen Veterans Center for the Study of Posttraumatic Stress and Traumatic Brain Injury; and Department of Psychiatry, NYU School of Medicine, New York, NY, USA
| | - Kerry J Ressler
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, MA, USA
| | - Francis J Doyle
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
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