Structural brain abnormalities in the common epilepsies assessed in a worldwide ENIGMA study

Structural MRI abnormalities are inconsistently reported in epilepsy. In the largest neuroimaging study to date, Whelan et al. report robust structural alterations across and within epilepsy syndromes, including shared volume loss in the thalamus, and widespread cortical thickness differences. The resulting neuroanatomical map will guide prospective studies of disease progression.

Neda Bernasconi | Peter Kochunov | Norman Delanty | Sebastien Ourselin | Luis Concha | Mario Mascalchi | Andrea Bernasconi | Dmitry Isaev | Neda Jahanshad | Terence J O'Brien | Orrin Devinsky | Thomas Thesen | Bernd Weber | Christian Rummel | Khalid Hamandi | Renzo Guerrini | Antonio Gambardella | Maria Eugenia Caligiuri | Andrea Cherubini | Roland Wiest | Philippe David | Matteo Lenge | Benjamin Bender | Fernando Cendes | Stefano Meletti | Andre Altmann | Paul M Thompson | Ingmar Blümcke | Pasquale Striano | Pascal Martin | Reetta Kälviäinen | Boris C Bernhardt | Jan Wagner | Carrie R McDonald | Junsong Zhang | Graeme D Jackson | Raviteja Kotikalapudi | Manuela Tondelli | Julie Absil | Sonya Foley | Patrick Kwan | Sanjay M Sisodiya | Sarah J Carr | Martin Domin | Mina Ryten | Angelo Labate | Anna Elisabetta Vaudano | Mark P Richardson | Ruben Kuzniecky | Niels K Focke | Simon S Keller | Derrek P Hibar | Anna Calvo | Yi Yao | Annamaria Vezzani | L. Concha | N. Jahanshad | P. Thompson | S. Ourselin | R. Kuzniecky | R. Wiest | G. Jackson | P. Kochunov | C. Yasuda | Marina K. M. Alvim | F. Cendes | P. Striano | B. Bender | D. Hibar | M. Mascalchi | M. Richardson | P. Kwan | O. Devinsky | T. Thesen | N. Bargalló | Guohao Zhang | S. Sisodiya | I. Blümcke | B. Weber | K. Blackmon | C. Carlson | A. Altmann | C. McDonald | A. Cherubini | K. Hamandi | M. Ryten | J. Absil | C. Depondt | G. Cavalleri | B. Bernhardt | T. O'Brien | J. Wagner | C. Whelan | S. Alhusaini | N. Delanty | M. Domin | A. Bernasconi | N. Bernasconi | A. Vaudano | C. Rummel | S. Keller | A. Calvo | S. Foley | C. Doherty | J. Botía | P. Auvinen | E. Bartolini | F. Bergo | Tauana Bernardes | B. Braga | M. Caligiuri | Sarah J A Carr | Jian Chen | Shuai Chen | P. David | Wendy França | G. Haaker | D. Isaev | R. Kotikalapudi | Magdalena A Kowalczyk | S. Langner | M. Lenge | K. M. Leyden | Min Liu | Richard Q. Loi | Pascal Martin | M. Morita | J. Pariente | Raúl Rodríguez-Cruces | Taavi Saavalainen | M. Semmelroch | M. Severino | R. Thomas | M. Tondelli | D. Tortora | L. Vivash | F. von Podewils | Yi Yao | N. Focke | A. Gambardella | R. Guerrini | R. Kälviäinen | A. Labate | S. Meletti | Junsong Zhang | A. Vezzani | Min Liu | Soenke Langner | Rhys H Thomas | Chad Carlson | Saud Alhusaini | Gianpiero L Cavalleri | Christopher D Whelan | Chantal Depondt | Nuria Bargalló | Guohao Zhang | Jian Chen | Barbara Braga | Kelly M Leyden | Colin P Doherty | Gerrit Haaker | Domenico Tortora | Emanuele Bartolini | Karen Blackmon | Lucy Vivash | Mariasavina Severino | Felix von Podewils | Clarissa L Yasuda | Juan A Botía | Marina K M Alvim | Pia Auvinen | Felipe P G Bergo | Tauana Bernardes | Shuai Chen | Wendy França | Richard Q Loi | Marcia E Morita | Jose C Pariente | Raul Rodríguez-Cruces | Taavi Saavalainen | Mira K Semmelroch | K. Leyden | R. Rodríguez-Cruces | M. Alvim | Y. Yao | T. O’Brien | S. Carr | P. Thompson | P. Thompson | Lucy E Vivash | P. Thompson | J. Wagner | P. Thompson | Sarah J. A. Carr | P. Thompson

[1]  Erick Jorge Canales-Rodríguez,et al.  Cortical abnormalities in bipolar disorder: an MRI analysis of 6503 individuals from the ENIGMA Bipolar Disorder Working Group , 2017, Molecular Psychiatry.

[2]  Maria Thom,et al.  Histopathological Findings in Brain Tissue Obtained during Epilepsy Surgery , 2017, The New England journal of medicine.

[3]  D. Friedman,et al.  Underestimation of sudden deaths among patients with seizures and epilepsy , 2017, Neurology.

[4]  Neda Bernasconi,et al.  A meta-analysis on progressive atrophy in intractable temporal lobe epilepsy , 2017, Neurology.

[5]  Xiaosong He,et al.  Presurgical thalamic “hubness” predicts surgical outcome in temporal lobe epilepsy , 2017, Neurology.

[6]  Thalamus as a “hub” to predict outcome after epilepsy surgery , 2017, Neurology.

[7]  R. Kuzniecky,et al.  Amygdala enlargement: Temporal lobe epilepsy subtype or nonspecific finding? , 2017, Epilepsy Research.

[8]  Paul M. Thompson,et al.  Emerging Global Initiatives in Neurogenetics: The Enhancing Neuroimaging Genetics through Meta-analysis (ENIGMA) Consortium , 2017, Neuron.

[9]  Thomas E. Nichols,et al.  Subcortical brain volume differences in participants with attention deficit hyperactivity disorder in children and adults: a cross-sectional mega-analysis. , 2017, The lancet. Psychiatry.

[10]  Edouard Hirsch,et al.  ILAE classification of the epilepsies: Position paper of the ILAE Commission for Classification and Terminology , 2017, Epilepsia.

[11]  Benjamin S Aribisala,et al.  Novel genetic loci associated with hippocampal volume , 2017, Nature Communications.

[12]  Gareth J. Barker,et al.  Preoperative automated fibre quantification predicts postoperative seizure outcome in temporal lobe epilepsy , 2016, Brain : a journal of neurology.

[13]  Paul M. Thompson,et al.  ENIGMA-Viewer: interactive visualization strategies for conveying effect sizes in meta-analysis , 2016, BMC Bioinformatics.

[14]  Lachlan T. Strike,et al.  Cortical abnormalities in adults and adolescents with major depression based on brain scans from 20 cohorts worldwide in the ENIGMA Major Depressive Disorder Working Group , 2016, Molecular Psychiatry.

[15]  Anders M. Dale,et al.  ENIGMA and the individual: Predicting factors that affect the brain in 35 countries worldwide , 2017, NeuroImage.

[16]  Silvia Brem,et al.  Distinct Subcortical Volume Alterations in Pediatric and Adult OCD: A Worldwide Meta- and Mega-Analysis. , 2017, The American journal of psychiatry.

[17]  Benjamin S Aribisala,et al.  Novel genetic loci underlying human intracranial volume identified through genome-wide association , 2016, Nature Neuroscience.

[18]  Chris Tailby,et al.  MRI-negative temporal lobe epilepsy , 2016, Neurology.

[19]  N. Bernasconi Is epilepsy a curable neurodegenerative disease? , 2016, Brain : a journal of neurology.

[20]  E. Wirrell,et al.  Cognitive and neurodevelopmental comorbidities in paediatric epilepsy , 2016, Nature Reviews Neurology.

[21]  Asla Pitkänen,et al.  Advances in the development of biomarkers for epilepsy , 2016, The Lancet Neurology.

[22]  Raphael Fernandes Casseb,et al.  Large‐scale brain networks are distinctly affected in right and left mesial temporal lobe epilepsy , 2016, Human brain mapping.

[23]  C. Yasuda,et al.  Progression of gray matter atrophy in seizure‐free patients with temporal lobe epilepsy , 2016, Epilepsia.

[24]  O. Andreassen,et al.  Subcortical volumetric abnormalities in bipolar disorder , 2016, Molecular Psychiatry.

[25]  Neda Bernasconi,et al.  Gray matter structural compromise is equally distributed in left and right temporal lobe epilepsy , 2016, Human brain mapping.

[26]  E. Ben-Menachem Epilepsy in 2015: the year of collaborations for big data , 2016, The Lancet Neurology.

[27]  Josemir W Sander,et al.  Outcome of seizures in the general population after 25 years: a prospective follow-up, observational cohort study , 2016, Journal of Neurology, Neurosurgery & Psychiatry.

[28]  Lachlan T. Strike,et al.  Subcortical brain alterations in major depressive disorder: findings from the ENIGMA Major Depressive Disorder working group , 2015, Molecular Psychiatry.

[29]  I. Melle,et al.  Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium , 2016, Molecular Psychiatry.

[30]  Boris C. Bernhardt,et al.  Network analysis for a network disorder: The emerging role of graph theory in the study of epilepsy , 2015, Epilepsy & Behavior.

[31]  T. Vangberg,et al.  How Does the Accuracy of Intracranial Volume Measurements Affect Normalized Brain Volumes? Sample Size Estimates Based on 966 Subjects from the HUNT MRI Cohort , 2015, American Journal of Neuroradiology.

[32]  Thomas E. Nichols,et al.  Common genetic variants influence human subcortical brain structures , 2015, Nature.

[33]  Bernd Weber,et al.  Thalamotemporal alteration and postoperative seizures in temporal lobe epilepsy , 2015, Annals of neurology.

[34]  Jeanne T Paz,et al.  Microcircuits and their interactions in epilepsy: is the focus out of focus? , 2015, Nature Neuroscience.

[35]  Boris C. Bernhardt,et al.  Functional network alterations and their structural substrate in drug-resistant epilepsy , 2014, Front. Neurosci..

[36]  Michael R. Johnson,et al.  Genetic determinants of common epilepsies: a meta-analysis of genome-wide association studies , 2014, The Lancet Neurology.

[37]  Aidan Neligan,et al.  An unknown quantity—The worldwide prevalence of epilepsy , 2014, Epilepsia.

[38]  J. H. Cross,et al.  ILAE Official Report: A practical clinical definition of epilepsy , 2014, Epilepsia.

[39]  C. Yasuda,et al.  Frequent Seizures Are Associated with a Network of Gray Matter Atrophy in Temporal Lobe Epilepsy with or without Hippocampal Sclerosis , 2014, PloS one.

[40]  Catherine R. Traynor,et al.  Thalamotemporal impairment in temporal lobe epilepsy: A combined MRI analysis of structure, integrity, and connectivity , 2014, Epilepsia.

[41]  H. Fukuyama,et al.  Temporal Lobe Epilepsy with Amygdala Enlargement: A Morphologic and Functional Study , 2014, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

[42]  B. Bernhardt,et al.  Patterns of subregional mesiotemporal disease progression in temporal lobe epilepsy , 2013, Neurology.

[43]  Fernando Cendes,et al.  Amygdala Enlargement in Patients with Mesial Temporal Lobe Epilepsy without Hippocampal Sclerosis , 2013, Front. Neurol..

[44]  Maria Thom,et al.  International consensus classification of hippocampal sclerosis in temporal lobe epilepsy: A Task Force report from the ILAE Commission on Diagnostic Methods , 2013, Epilepsia.

[45]  Brian A. Nosek,et al.  Power failure: why small sample size undermines the reliability of neuroscience , 2013, Nature Reviews Neuroscience.

[46]  Walter H. Backes,et al.  Early onset of cortical thinning in children with rolandic epilepsy☆ , 2013, NeuroImage: Clinical.

[47]  Marco Leite,et al.  Transfer Function between EEG and BOLD Signals of Epileptic Activity , 2013, Front. Neur..

[48]  John S. Duncan,et al.  Abnormal thalamocortical structural and functional connectivity in juvenile myoclonic epilepsy , 2012, Brain : a journal of neurology.

[49]  Bernd Weber,et al.  Concomitant Fractional Anisotropy and Volumetric Abnormalities in Temporal Lobe Epilepsy: Cross-Sectional Evidence for Progressive Neurologic Injury , 2012, PloS one.

[50]  Peter Wolf,et al.  The system epilepsies: A pathophysiological hypothesis , 2012, Epilepsia.

[51]  Marisa O. Hollinshead,et al.  Identification of common variants associated with human hippocampal and intracranial volumes , 2012, Nature Genetics.

[52]  Norman Delanty,et al.  Widespread cortical morphologic changes in juvenile myoclonic epilepsy: Evidence from structural MRI , 2012, Epilepsia.

[53]  B. Bernhardt,et al.  Mapping thalamocortical network pathology in temporal lobe epilepsy , 2012, Neurology.

[54]  Eric Halgren,et al.  MRI analysis in temporal lobe epilepsy: Cortical thinning and white matter disruptions are related to side of seizure onset , 2011, Epilepsia.

[55]  E. Chang,et al.  Vagus nerve stimulation for epilepsy : a meta analysis of efficacy and predictors of response A review , 2011 .

[56]  John S. Duncan,et al.  Motor system hyperconnectivity in juvenile myoclonic epilepsy: a cognitive functional magnetic resonance imaging study , 2011, Brain : a journal of neurology.

[57]  A. Cerasa,et al.  Neocortical thinning in “benign” mesial temporal lobe epilepsy , 2011, Epilepsia.

[58]  G J Barker,et al.  Focal structural changes and cognitive dysfunction in juvenile myoclonic epilepsy , 2011, Neurology.

[59]  Maria Thom,et al.  Investigation of widespread neocortical pathology associated with hippocampal sclerosis in epilepsy: A postmortem study , 2011, Epilepsia.

[60]  Walter H Backes,et al.  Functional MRI in chronic epilepsy: associations with cognitive impairment , 2010, The Lancet Neurology.

[61]  Wolfgang Viechtbauer,et al.  Conducting Meta-Analyses in R with the metafor Package , 2010 .

[62]  Neda Bernasconi,et al.  Cortical thickness analysis in temporal lobe epilepsy , 2010, Neurology.

[63]  M. Brázdil,et al.  An optimized voxel‐based morphometric study of gray matter changes in patients with left‐sided and right‐sided mesial temporal lobe epilepsy and hippocampal sclerosis (MTLE/HS) , 2010, Epilepsia.

[64]  J. H. Cross,et al.  Revised terminology and concepts for organization of seizures and epilepsies: Report of the ILAE Commission on Classification and Terminology, 2005–2009 , 2010, Epilepsia.

[65]  Jerome Barakos,et al.  Involvement of the thalamocortical network in TLE with and without mesiotemporal sclerosis , 2009, Epilepsia.

[66]  Maria Thom,et al.  Temporal Lobe Sclerosis Associated With Hippocampal Sclerosis in Temporal Lobe Epilepsy: Neuropathological Features , 2009, Journal of neuropathology and experimental neurology.

[67]  Boris C. Bernhardt,et al.  Thalamo–cortical network pathology in idiopathic generalized epilepsy: Insights from MRI-based morphometric correlation analysis , 2009, NeuroImage.

[68]  Alan C. Evans,et al.  Longitudinal and cross-sectional analysis of atrophy in pharmacoresistant temporal lobe epilepsy , 2009, Neurology.

[69]  N. Roberts,et al.  Voxel‐based morphometry of temporal lobe epilepsy: An introduction and review of the literature , 2008, Epilepsia.

[70]  J. French,et al.  Refractory Epilepsy: Clinical Overview , 2007, Epilepsia.

[71]  J J Halford,et al.  Asymmetrical extra-hippocampal grey matter loss related to hippocampal atrophy in patients with medial temporal lobe epilepsy , 2006, Journal of Neurology, Neurosurgery & Psychiatry.

[72]  F Cendes,et al.  MRI reveals structural abnormalities in patients with idiopathic generalized epilepsy , 2006, Neurology.

[73]  J. Gotman,et al.  Generalized epileptic discharges show thalamocortical activation and suspension of the default state of the brain. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[74]  Samuel Wiebe,et al.  Long-term seizure outcomes following epilepsy surgery: a systematic review and meta-analysis. , 2005, Brain : a journal of neurology.

[75]  Josemir W Sander,et al.  Life expectancy in people with newly diagnosed epilepsy. , 2004, Brain : a journal of neurology.

[76]  Alexander Hammers,et al.  Progressive neocortical damage in epilepsy , 2003, Annals of neurology.

[77]  Neil Roberts,et al.  Voxel-Based Morphometric Comparison of Hippocampal and Extrahippocampal Abnormalities in Patients with Left and Right Hippocampal Atrophy , 2002, NeuroImage.

[78]  S L Free,et al.  Quantitative MRI in patients with idiopathic generalized epilepsy. Evidence of widespread cerebral structural changes. , 1997, Brain : a journal of neurology.

[79]  Y. Benjamini,et al.  Controlling the false discovery rate: a practical and powerful approach to multiple testing , 1995 .