Author
Karestan Chase Koenen
Broad InstituteORCID 0000-0003-2978-7655Unclaimed ORCID profile · follow to get notified of new preprints
Biology Disciplines
Click to filter author papersSignature Assays, Organisms & Methods
Click to filter · or open tagActivity by Year
2018-2026 · peak 7/yrCo-Author Collaboration Network
10 top collaborators · 33 mutual co-author links25 papers
Recent·Most cited
- Genetic & Genomic MedicinemedRxivPreprintDOI 10.64898/2026.09.30.26364416
- NeurosciencebioRxivPreprint
Fine mapping of PTSD GWAS reveals a role for amygdala Foxp2 in regulation of fear and threat responses
Olga Y. Ponomareva, Lauren T. Seabrook, Mateo Maya-Martínez…·Kerry James Ressler
This study fine-maps PTSD GWAS data with amygdala eQTLs and shows FOXP2 expression is linked to increased PTSD risk, with functional validation in mice and humans.
- Genetic & Genomic MedicinemedRxivPreprint
DNA Methylation as a Mediator of Cardiovascular Disease Risk in Relation to PTSD Severity: Identification of Potential Epigenetic Biomarkers.
Md Mainul Hasan Sarker, Andrew D. Ratanatharathorn, Jan Dahrendorff…·Monica Uddin
The paper investigates DNA methylation mediation between PTSD severity and cardiovascular disease risk, identifying six CpGs as potential epigenetic biomarkers.
DOI 10.64898/2026.01.22.26344545 - Genetic & Genomic MedicineCommunications MedicinePeer-reviewed
Trans-Ancestry GWAS of Hot Flashes Reveals Potent Treatment Target and Overlap with Psychiatric Disorders
Kathryn E. Werwath, Rebecca B. Lawn, Madeleine Salem…·Laramie E. Duncan
This paper conducts a trans-ancestry GWAS of hot flashes, identifies TACR3 as a key genetic target, and finds genetic overlaps with psychiatric disorders.
- Genetic & Genomic MedicinemedRxivPreprint
The Landscape of Shared and Divergent Genetic Influences across 14 Psychiatric Disorders
Andrew David Grotzinger, Josefin Werme, Wouter J. Peyrot…·Jordan W. Smoller
The paper identifies five genomic factors explaining most genetic variance across 14 psychiatric disorders and finds shared and disorder-specific genetic signals with distinct biological functions.
15 citations - GenomicsbioRxivPreprint
A blended genome and exome sequencing method captures genetic variation in an unbiased, high-quality, and cost-effective manner
Toni A. Boltz, Benjamin B. Chu, Calwing Liao…·Alicia R. Martin
The paper introduces BGE, a sequencing method that combines low-pass whole genome and deep whole exome data, showing high accuracy and cost-effectiveness for genetic variant discovery.
12 citations - GenomicsThe American Journal of Human GeneticsPeer-reviewed
Genetic structure correlates with ethnolinguistic diversity in eastern and southern Africa
Elizabeth G. Atkinson, Shareefa Dalvie, Yakov Pichkar…·NeuroGAP-Psychosis Study Team
This study examines genetic structure in African populations using ethnolinguistic data, finding that language classifications better capture genetic variation than geography alone.
26 citations - BioinformaticsJournal of the American Statistical AssociationPeer-reviewed
Heterogeneous Mediation Analysis on Epigenomic PTSD and Traumatic Stress in a Predominantly African American Cohort
Fei Xue, Xiwei Tang, Grace S. Kim…·Annie Qu
The paper develops a heterogeneous mediation analysis method to study DNA methylation's role in PTSD among African Americans, identifying subgroups and mediators linked to PTSD symptoms.
20 citations - Genetic & Genomic MedicinePsychiatry ResearchPeer-reviewed
DNA methylation of Nuclear Factor of Activated T Cells 1 mediates the prospective relation between exposure to different traumatic event types and post-traumatic stress disorder
James R. Occean, Agaz Hussain Wani, Janelle Donglasan…·Monica Uddin
The paper examines how DNA methylation at NFATC1 CpG sites mediates the relationship between different trauma types and PTSD risk in a prospective study.
6 citations - GenomicsClinical EpigeneticsPeer-reviewed
Associations between childhood family emotional health, fronto-limbic grey matter volume, and saliva 5mC in young adulthood
JR Pfeiffer, Angela C. Bustamante, Grace S. Kim…·Monica Uddin
The paper examines associations between childhood family emotional health, brain grey matter volume, and DNA methylation in saliva, finding mediation effects and enriched biological pathways.
2 citations - GenomicsThe American Journal of Human GeneticsPeer-reviewed
Low-coverage sequencing cost-effectively detects known and novel variation in underrepresented populations
Alicia R. Martin, Elizabeth G. Atkinson, Sinéad B. Chapman…·Zukiswa Zingela
This study shows low-coverage sequencing is more accurate and cost-effective than GWAS arrays for detecting genetic variation in diverse African populations.
119 citationstop 1% - GenomicsAgingPeer-reviewed
Neighborhood environment, social cohesion, and epigenetic aging
Chantel L. Martin, Cavin K Ward-Caviness, Radhika Dhingra…·Allison E. Aiello
This study examines how neighborhood conditions relate to epigenetic aging using DNA methylation clocks in a sample of 158 individuals from the Detroit Neighborhood Health Study.
55 citations - GenomicsNature GeneticsPeer-reviewed
Tractor: A framework allowing for improved inclusion of admixed individuals in large-scale association studies.
Elizabeth G. Atkinson, Adam X. Maihofer, Masahiro Kanai…·Benjamin M. Neale
Tractor improves GWAS power and resolution by including admixed individuals through local ancestry-aware analysis.
244 citationstop 1% - BioinformaticsJournal of Affective DisordersPeer-reviewed
The Impact of Psychopathology, Social Adversity and Stress-relevant DNAm on Prospective Risk for Post-traumatic Stress: A Machine Learning Approach
Agaz Hussain Wani, Allison E. Aiello, Grace S. Kim…·Monica Uddin
The paper uses machine learning to identify factors predicting prospective risk of post-traumatic stress symptoms, finding that prior PTSS, loneliness, and a specific DNA methylation site are key predictors.
37 citations - Genetic & Genomic MedicinemedRxivPreprint
Polygenic regulation of PTSD severity and outcomes among World Trade Center responders
Laura M. Huckins, Jessica Johnson, Leo M. Cancelmo…·Adriana Feder
The paper examines polygenic risk scores for PTSD severity and chronicity in World Trade Center responders, finding significant genetic contributions and associations with brain imaging phenotypes.
8 citations - GenomicsTranslational PsychiatryPeer-reviewed
Genomic Influences on Self-Reported Childhood Maltreatment
Shareefa Dalvie, Adam X. Maihofer, Jonathan R. I. Coleman…·Caroline M. Nievergelt
This study identifies genetic variants associated with self-reported childhood maltreatment and finds significant genetic correlations with depressive symptoms.
85 citationstop 4% - GeneticsbioRxivPreprint
A two-stage approach to identifying and validating modifiable factors for the prevention of depression
Karmel W. Choi, Murray B. Stein, Kristen M. Nishimi…·Jordan W. Smoller
The paper identifies and validates modifiable factors for depression prevention using UK Biobank data and Mendelian randomization.
4 citations - GenomicsBrain Behavior and ImmunityPeer-reviewed
Methylomic profiles reveal sex-specific shifts in leukocyte composition associated with post-traumatic stress disorder
Grace S. Kim, Alicia K. Smith, Fei Xue…·Monica Uddin
The paper identifies sex-specific changes in monocyte proportions in males with PTSD using methylomic data, showing no such changes in females.
20 citations - GeneticsNature CommunicationsPeer-reviewed
Variably methylated regions in the newborn epigenome: environmental, genetic and combined influences
Darina Czamara, Gökçen Eraslan, Christian Magnus Page…·Robert M. Maier
The paper examines how genetic and environmental factors influence DNA methylation at variably methylated regions in neonatal blood, finding that combined effects best explain methylation variability.
143 citationstop 2% - GeneticsPsychological MedicinePeer-reviewed
Prospective Study of Polygenic Risk, Protective Factors, and Incident Depression Following Combat Deployment in US Army Soldiers
Karmel W. Choi, Chia‐Yen Chen, Robert J. Ursano…·Jordan W. Smoller
This study examines how polygenic risk and protective factors like unit cohesion and trait resilience affect the risk of depression in US Army soldiers after combat deployment.
33 citations - GenomicsbioRxivPreprint
Epigenome-wide meta-analysis of PTSD across 10 military and civilian cohorts identifies novel methylation loci
Alicia K. Smith, Andrew D. Ratanatharathorn, Adam X. Maihofer…·Caroline M. Nievergelt
This study identifies ten novel methylation loci associated with PTSD through a meta-analysis of 1,896 cases and controls across ten cohorts, highlighting the AHRR locus and its link to kynurenine levels.
14 citations - GeneticsbioRxivPreprint
Analysis of Genetically Regulated Gene Expression identifies a trauma type specific PTSD gene, SNRNP35
Laura M. Huckins, Michael S. Breen, Chris Chatzinakos…·Nikolaos P. Daskalakis
The paper identifies SNRNP35 as a trauma type-specific PTSD gene through analysis of genetically regulated gene expression in PTSD cases and controls.
- GeneticsJAMA PsychiatryPeer-reviewed
Testing Causal Bidirectional Influences between Physical Activity and Depression using Mendelian Randomization
Karmel W. Choi, Chia‐Yen Chen, Murray B. Stein…·Jordan W. Smoller
This study uses Mendelian randomization to test causal relationships between physical activity and depression, finding protective effects of objective activity measures but not self-reported ones.
744 citationstop 1% - GenomicsbioRxivPreprint
Maternal psychosocial risk factors and offspring gestational epigenetic age acceleration in a South African birth cohort study
Nastassja Koen, Meaghan J. Jones, Raymond T. Nhapi…·Dan Joseph Stein
1 citation - GeneticsbioRxivPreprint
Economic status mediates the relationship between educational attainment and posttraumatic stress disorder: a multivariable Mendelian randomization study
Renato A Polimanti, Andrew D. Ratanatharathorn, Adam X. Maihofer…·Joel E. Gelernter
This study uses genetic data to show that educational attainment causally reduces PTSD risk, with economic status mediating this relationship.