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Workgroup Chairs:

Karestan Koenen, Caroline Nievergelt, Murray Stein, and Kerry Ressler

If you have questions concerning the projects this workgroup is undertaking, please contact the work group chair(s).

Analytic Groups/Directors:

Core Analytical Group Director: Caroline Nievergelt

Data Receiving Committee Representative: Nikolaos Daskalakis

Data Access Committee Representative: Adam Maihofer

PGC-PTSD GitHub Representative: Jonathan Coleman


PGC-PTSD CNV Workgroup Directors: Adam Maihofer, Jonathan Sebat, Caroline Nievergelt

PGC-PTSD EWAS Workgroup Directors: Alicia Smith, Caroline Nievergelt, Monica Uddin, Mark Logue

PGC-PTSD Gene Expression Workgroup Directors: Alison Ashley-Koch, Mike Hauser

PGC-PTSD Imaging Workgroup Directors: Rajendra A. Morey, Mark Logue

PGC-PTSD Physical Health Workgroup Directors: Jennifer A. Sumner, Erica Wolf

PGC-PTSD Psychophysiology Workgroup Directors: Victoria Risbrough, Tanja Jovanovic

PGC-PTSD Systems Biology Workgroup Directors: Nikolaos Daskalakis, Shareefa Dalvie

PGC-PTSD Electronic Health Records Workgroup Directors: Karestan Koenen

PGC-PTSD Traumatic Brain Injury Workgroup Directors: Seth Disner

PGC-PTSD Substance Use Disorder Workgroup Directors: Jackie Meyers, Ananda B. Amstadter

PGC-PTSD Local Ancestry Workgroup Directors: Elizabeth Atkinson

PGC-PTSD Microbiome Workgroup Directors: Sian Hemmings

Outreach Liaison:

Seyma Katrinli, Karmel Choi, and Murray Stein

If you have questions concerning this web page or our social media accounts, and/or you have resources that you would like to share with the public, please contact the work group outreach liaison(s).

Data Access Committee (DAC) Representative:

Laramie Duncan & Adam Maihofer

If you have any questions about accessing PGC PTSD data, please contact the DAC representative.

PTSD Data Access Portal

About Us

The Psychiatric Genomics Consortium Posttraumatic Stress Disorder Working Group (PGC-PTSD) was founded in 2013 with the goal of conducting the first meta-analysis of genome-wide association study (GWAS) data for symptoms and diagnosis of PTSD. During that time, our membership has grown to include data from 60 studies, with over 200 investigators from 12 countries.

Drs. Karestan Koenen, Caroline Nievergelt, Kerry Ressler, and Murray Stein currently chair our group. Our interdisciplinary membership includes graduate and postdoctoral trainees in psychiatric genetics as well as distinguished faculty in Psychology, Genetics, Biostatistics, Epidemiology, Psychiatry, and Medicine. Working together we have laid the groundwork for our first large-scale GWAS, which will contain over 3,000 cases and 17,000 controls (see PMC4538342) and recently followed this work with a multi-ethnic cohort including over 30,000 PTSD cases and 170,000 controls (see PMC6783435). We are currently looking to increase the number of studies with genotype and clinical information on individuals with PTSD, including those from overlooked ancestry groups. Our current objectives include:

1) Optimize the contribution of diverse ancestry groups in PGC-PTSD to identify causal variants and ensure that advances in our genetic understanding of PTSD extend across ancestral backgrounds.

2) Use post-GWAS approaches to identify functional consequences of variants identified in GWAS meta-analyses and prioritize variants, genes, networks and pathways for functional validation.

3) Use polygenic risk scores (PRS) of PTSD and PTSD components to provide insights into genetic architecture, relation to other disorders, traits and protective factors, and advance causal inference.

We are also seeking to expand our studies by linking genetic data with copy number variations (CNVs), epigenetics, gene expression, brain imaging, physical health, psychophysiology, systems biology, Electronic Health Records (EHR), traumatic brain injury, substance use disorder, local ancestry and microbiome.

Members of the workgroup stay connected through regular conference calls the third Tuesdays of the month and in-person meetings twice a year at Academic conferences, usually the Society of Biological Psychiatry in the Spring and International Society for Traumatic Stress Studies in the Fall.

If you are a member of the PTSD workgroup and have questions about a specific analysis or if you are interested in joining an ongoing project, please contact Dr. Karestan Koenen. If you are interested in learning about or joining our subgroups, please contact the subgroup directors.

For more information about PGC-PTSD workgroup and the subgroups, please visit


Logue, M. W., Amstadter, A. B., Baker, D. G., Duncan, L., Koenen, K. C., Liberzon, I., … Uddin, M. (2015). The Psychiatric Genomics Consortium Posttraumatic Stress Disorder Workgroup: Posttraumatic Stress Disorder Enters the Age of Large-Scale Genomic Collaboration. Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology, 40(10), 2287–2297.

Duncan LE, Ratanatharathorn A, Aiello AE, et al. Largest GWAS of PTSD (N=20 070) yields genetic overlap with schizophrenia and sex differences in heritability. Mol Psychiatry. 2018;23(3):666‐673. doi:10.1038/mp.2017.77

Nievergelt CM, Maihofer AX, Klengel T, et al. International meta-analysis of PTSD genome-wide association studies identifies sex- and ancestry-specific genetic risk loci. Nat Commun. 2019;10(1):4558. Published 2019 Oct 8. doi:10.1038/s41467-019-12576-w

Complete publication list: