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. 2025 Aug 14:awaf259.
doi: 10.1093/brain/awaf259. Online ahead of print.

Associations between epilepsy-related polygenic risk and brain morphology in childhood

Alexander Ngo  1   2 Lang Liu  1   3 Sara Larivière  4 Valeria Kebets  1   2 Serena Fett  1   2 Clara F Weber  1   5   6 Jessica Royer  1   2 Eric Yu  1   3 Raúl Rodríguez-Cruces  1   2 Zhiqiang Zhang  7 Leon Qi Rong Ooi  8   9   10 B T Thomas Yeo  8   9   11 Birgit Frauscher  12   13 Casey Paquola  14 Maria Eugenia Caligiuri  15 Antonio Gambardella  16 Luis Concha  17 Simon S Keller  18   19 Fernando Cendes  20 Clarissa L Yasuda  20 Leonardo Bonilha  21 Ezequiel Gleichgerrcht  22 Niels K Focke  23 Raviteja Kotikalapudi  24 Terence J O'Brien  25   26 Benjamin Sinclair  25   26 Lucy Vivash  25   26 Patricia M Desmond  26 Elaine Lui  26 Anna Elisabetta Vaudano  27   28 Stefano Meletti  27   28 Reetta Kälviäinen  29   30 Hamid Soltanian-Zadeh  31   32 Gavin P Winston  33   34   35 Vijay K Tiwari  36 Barbara A K Kreilkamp  23 Matteo Lenge  37 Renzo Guerrini  37   38 Khalid Hamandi  39   40 Theodor Rüber  41   42   43   44 Tobias Bauer  41   42   43 Orrin Devinsky  45 Pasquale Striano  46 Erik Kaestner  47 Sean N Hatton  48 Lorenzo Caciagli  33   49 Matthias Kirschner  50   51 John S Duncan  33   34 Paul M Thompson  52 ENIGMA Consortium Epilepsy Working GroupCarrie R McDonald  47   53 Sanjay M Sisodiya  33   34 Neda Bernasconi  1   2 Andrea Bernasconi  1   2 Ziv Gan-Or  1   2   3 Boris C Bernhardt  1   2
Collaborators, Affiliations

Associations between epilepsy-related polygenic risk and brain morphology in childhood

Alexander Ngo et al. Brain. .

Abstract

Extensive neuroimaging research in temporal lobe epilepsy with hippocampal sclerosis (TLE-HS) has identified brain atrophy as a disease phenotype. While it is also related to a complex genetic architecture, the transition from genetic risk factors to brain vulnerabilities remains unclear. Using a population-based approach, we examined the associations between epilepsy-related polygenic risk for HS (PRS-HS) and brain structure in healthy developing children, assessed their relation to brain network architecture, and evaluated its correspondence with case-control findings in TLE-HS diagnosed patients relative to healthy individuals We used genome-wide genotyping and structural T1-weighted magnetic resonance imaging (MRI) of 3,826 neurotypical children from the Adolescent Brain Cognitive Development (ABCD) study. Surface-based linear models related PRS-HS to cortical thickness measures, and subsequently contextualized findings with structural and functional network architecture based on epicentre mapping approaches. Imaging-genetic associations were then correlated to atrophy and disease epicentres in 785 patients with TLE-HS relative to 1,512 healthy controls aggregated across multiple sites. Higher PRS-HS was associated with decreases in cortical thickness across temporo-parietal as well as fronto-central regions of neurotypical children. These imaging-genetic effects were anchored to the connectivity profiles of distinct functional and structural epicentres. Compared with disease-related alterations from a separate epilepsy cohort, regional and network correlates of PRS-HS strongly mirrored cortical atrophy and disease epicentres observed in patients with TLE-HS, and highly replicable across different studies. Findings were consistent when using statistical models controlling for spatial autocorrelations and robust to variations in analytic methods. Capitalizing on recent imaging-genetic initiatives, our study provides novel insights into the genetic underpinnings of structural alterations in TLE-HS, revealing common morphological and network pathways between genetic vulnerability and disease mechanisms. These signatures offer a foundation for early risk stratification and personalized interventions targeting genetic profiles in epilepsy.

Keywords: brain structure; childhood; genetic risk; imaging-genetics; temporal lobe epilepsy.

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Update of

  • ASSOCIATIONS BETWEEN EPILEPSY-RELATED POLYGENIC RISK AND BRAIN MORPHOLOGY IN CHILDHOOD.
    Ngo A, Liu L, Larivière S, Kebets V, Fett S, Weber CF, Royer J, Yu E, Rodríguez-Cruces R, Zhang Z, Ooi LQR, Thomas Yeo BT, Frauscher B, Paquola C, Caligiuri ME, Gambardella A, Concha L, Keller SS, Cendes F, Yasuda CL, Bonilha L, Gleichgerrcht E, Focke NK, Kotikalapudi R, O'Brien TJ, Sinclair B, Vivash L, Desmond PM, Lui E, Vaudano AE, Meletti S, Kälviäinen R, Soltanian-Zadeh H, Winston GP, Tiwari VK, Kreilkamp BAK, Lenge M, Guerrini R, Hamandi K, Rüber T, Bauer T, Devinsky O, Striano P, Kaestner E, Hatton SN, Caciagli L, Kirschner M, Duncan JS, Thompson PM; ENIGMA Consortium Epilepsy Working Group; McDonald CR, Sisodiya SM, Bernasconi N, Bernasconi A, Gan-Or Z, Bernhardt BC. Ngo A, et al. bioRxiv [Preprint]. 2025 Jan 17:2025.01.17.633277. doi: 10.1101/2025.01.17.633277. bioRxiv. 2025. Update in: Brain. 2025 Aug 14:awaf259. doi: 10.1093/brain/awaf259. PMID: 39868179 Free PMC article. Updated. Preprint.

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