Cited by 37Epigenetics and DNA MethylationBirth, Development, and HealthChild Abuse and Trauma

Epigenetic signatures of intergenerational exposure to violence in three generations of Syrian refugees

Open access
Mulligan, Connie J., Quinn, Edward B., Hamadmad, Dima, Dutton, Christopher L., Nevell, Lisa, Binder, Alexandra M., Panter-Brick, Catherine, Dajani, Rana·2025·Scientific Reports

Abstract

Maternal trauma influences infant and adult health outcomes and may impact future generations through epigenetic modifications such as DNA methylation (DNAm). Research in humans on the intergenerational epigenetic transmission of trauma effects is limited. In this study, we assessed DNAm signatures of war-related violence by comparing germline, prenatal, and direct exposures to violence across three generations of Syrian refugees. We compared families in which a pregnant grandmother versus a pregnant mother was exposed to violence and included a control group with no exposure to war. We collected buccal swab samples and survey data from mothers and 1-2 children in each of 48 families (n = 131 participants). Based on an epigenome-wide association study (EWAS), we identified differentially methylated regions (DMPs): 14 were associated with germline and 21 with direct exposure to violence. Most DMPs showed the same directionality in DNAm change across germline, prenatal, and direct exposures, suggesting a common epigenetic response to violence. Additionally, we identified epigenetic age acceleration in association with prenatal exposure to violence in children, highlighting the critical period of in utero development. This is the first report of an intergenerational epigenetic signature of violence, which has important implications for understanding the inheritance of trauma.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/s41598-025-89818-z

Cites

76 of 76 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Consistent directional methylation changes across direct, prenatal, and germline exposure, together with dose-response relationships between trauma burden and molecular changes, support cumulative biological adaptation to prolonged adversity.

    “Consistent directional methylation changes across direct, prenatal, and germline exposure, together with dose-response relationships between trauma burden and molecular changes, support cumulative biological adaptation to prolonged adversity (59).”

    From Epigenetic changes associated with multi-generational trauma: characterization, mechanisms, and therapeutics (2026) · cites this paper as [59]

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • Across war-exposed populations, chronic trauma has been associated with epigenetic modulation of pathways governing cellular metabolism, neural development, and adaptive stress responses.

    “Across war-exposed populations, chronic trauma has been associated with epigenetic modulation of pathways governing cellular metabolism, neural development, and adaptive stress responses.”

    From Epigenetic changes associated with multi-generational trauma: characterization, mechanisms, and therapeutics (2026) · cites this paper as [59]

    The Results (Epigenome wide association study; page not provided) associate violence exposure in Syrian refugees with DNA-methylation differences and report that additional trauma was linked to further shifts at most identified sites. But the same section reports no enrichment for biological processes, so it does not establish modulation of the specified cellular-metabolism, neural-development, and adaptive-stress pathways. The Discussion describes enhanced responses to future stress as a possibility, not a demonstrated pathway effect. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Differential DNA methylation in genes involved in mitochondrial energy regulation, intracellular transport, and neurodevelopment suggests integration of metabolic and neuroregulatory systems under prolonged adversity.

    “Differential DNA methylation in genes involved in mitochondrial energy regulation, intracellular transport, and neurodevelopment suggests integration of metabolic and neuroregulatory systems under prolonged adversity (58, 59).”

    From Epigenetic changes associated with multi-generational trauma: characterization, mechanisms, and therapeutics (2026) · cites this paper as [59]

    The Results (Epigenome wide association study; page unavailable) report differential DNA methylation associated with violence exposure and identify a site annotated to RAB43, a gene involved in membrane trafficking. Our copy does not link the identified sites to mitochondrial energy regulation or neurodevelopment, and the Results report no enrichment for biological processes. The proposed integration of metabolic and neuroregulatory systems is therefore not supported by this paper. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [11]Gluckman, P. D. & Hanson, M. A. in Early Life Origins of Health and Disease Vol. 573 (eds E. M. Wintour & J. A. Owens) Ch. 1, 1–17 (Springer, 2006).

Cited by

Sorted by citations

Authors
Mulligan, C. J., Quinn, E. B., Hamadmad, D., Dutton, C. L., Nevell, L., Binder, A. M., Panter-Brick, C., & Dajani, R.
Affiliations
  • University of Florida (US)
  • University of Hawaii System (US)
  • Hashemite University (JO)
Corresponding author
Mulligan, Connie J.
Venue
Scientific Reports
Published
2025-02-27
Volume
15
Issue
1
Pages
5945-5945
ISSN
2045-2322 (ISSN-L)
OpenAlex
W4408062891
Cited by
36
References
76
Citations by year
2026: 17 · 2025: 19
FWCI
10.82
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
  • Social Sciences › Psychology › Clinical Psychology › Child Abuse and Trauma
Keywords
war-related violence, Syrian refugees, DNA methylation, maternal trauma, differentially methylated regions, epigenetic age acceleration, buccal swab DNA
MeSH terms
Grandparents, Exposure to Violence, Adult, Child, Child, Preschool, Female, Humans, Infant, Male, Mothers, Pregnancy, Prenatal Exposure Delayed Effects, Refugees, Syria, DNA Methylation, Epigenesis, Genetic, Genome-Wide Association Study

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review