852 results match your criteria: "Brain Institute - ICM[Affiliation]"

Real life data of ONC201 (dordaviprone) in pediatric and adult H3K27-altered recurrent diffuse midline glioma: Results of an international academia-driven compassionate use program.

Eur J Cancer

December 2024

Department of Pediatric and Adolescent Oncology, Gustave Roussy, Villejuif, France; Team Genomics and Oncogenesis of Brain Tumors, INSERM U981, Paris Saclay University, Villejuif, France.

Introduction: H3K27-altered diffuse midline gliomas (DMG) have limited therapeutic options and a very poor prognosis. Encouraging responses were observed in early clinical trials with ONC201. As ONC201 was unavailable in Europe, a compassionate use program supported by the French Authorities was launched for patients at progression after standard of care radiotherapy.

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Introduction: Parkinson's Disease (PD) affects around 8.5 million people currently with numbers expected to rise to 12 million by 2040. PD is characterized by fluctuating motor and non-motor symptoms demanding accurate monitoring.

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A Machine Learning Model to Harmonize Volumetric Brain MRI Data for Quantitative Neuroradiologic Assessment of Alzheimer Disease.

Radiol Artif Intell

January 2025

From the Laboratory of Neuroinformatics, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Via Pilastroni 4, Brescia 25125, Italy (D.A., A.R.); Alzheimer Centre Amsterdam, Neurology, Vrije Universiteit, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands (V.V., W.M.v.d.F., B.M.T.); Amsterdam Neuroscience, Neurodegeneration, Amsterdam, the Netherlands (V.V., W.M.v.d.F., B.M.T.); Brain Imaging Centre, HUN-REN Research Centre for Natural Sciences, Budapest, Hungary (B.W., T.A., Z.V.); Biomatics and Applied Artificial Intelligence Institute, John von Neumann Faculty of Informatics, Óbuda University, Budapest, Hungary (B.W.); The Australian e-Health Research Centre, CSIRO Health and Biosecurity, Brisbane, Australia (P.B.); School of Psychology, University of Surrey, Guildford, United Kingdom (T.A.); Sorbonne Université, Institut du Cerveau-Paris Brain Institute-ICM, CNRS, Inria, Inserm, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France (S.D.); Department of Epidemiology and Data Science, Vrije Universiteit, Amsterdam UMC, location VUmc, Amsterdam, the Netherlands (W.M.v.d.F.); Department of Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit, Amsterdam, the Netherlands (F.B.); Queen Square Institute of Neurology, University College London, United Kingdom (F.B.); and UCL Hawkes Institute, Department of Medical Physics and Biomedical Engineering and Department of Computer Science, University College London, London, United Kingdom (F.B., D.C.A., A.A., N.P.O.).

Purpose To extend a previously developed machine learning algorithm for harmonizing brain volumetric data of individuals undergoing neuroradiologic assessment of Alzheimer disease not encountered during model training. Materials and Methods Neuroharmony is a recently developed method that uses image quality metrics as predictors to remove scanner-related effects in brain-volumetric data using random forest regression. To account for the interactions between Alzheimer disease pathology and image quality metrics during harmonization, the authors developed a multiclass extension of Neuroharmony for individuals with and without cognitive impairment.

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Determining Clinical Disease Progression in Symptomatic Patients With CADASIL.

Neurology

January 2025

From the ARAMIS (S.K., S.T.D.M.), Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, CNRS, Inria, Inserm, AP-HP, Groupe Hospitalier Sorbonne Université; Centre de référence pour les maladies vasculaires rares du cerveau et de l'œil (CERVCO) and Centre Neurovascular Translationnel (CNVT) (D.H., A.J., S.R., C.M., S.G., A.T., F.F., H.C.), AP-HP, Paris; and INSERM U1141 - FHU NeuroVasc (D.H., S.G., H.C.), Université Paris Cité, France.

Background And Objectives: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most frequent small artery brain disease caused by pathogenic variants of the NOTCH3 gene. During the disease, we still do not know how the various deficits progress and develop with each other at different stages of the disease. We aim to model disease progression and identify possible progressive subgroups and the effects of different covariates on clinical worsening.

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Recognition memory decline is associated with the progression to prodromal Alzheimer's disease in asymptomatic at-risk individuals.

J Neurol

December 2024

Sorbonne Université, Institut du Cerveau-Paris Brain Institute-ICM, INSERM, U 1127, CNRS, UMR 7225, AP-HP, CENIR, Centre MEG-EEG, Hôpital de La Pitié-Salpêtrière, 47 Boulevard de L'Hôpital, 75013, Paris, France.

Episodic memory (EM) alterations are a hallmark of Alzheimer's disease (AD). We assessed EM longitudinally in cognitively normal elders at-risk for AD (with subjective memory complaints), as a function of amyloid-β (Aβ) burden, neurodegeneration (N), and progression to prodromal AD. We stratified 264 INSIGHT-preAD study subjects in controls (Aβ-/N-), stable/N- or N + (Aβ +), and progressors/N- or N + (Aβ +) groups (progressors were included only until AD-diagnosis).

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Article Synopsis
  • Dystonia is a common movement disorder with a complex genetic background, showing significant variability in its clinical presentation and genetics.
  • The study involved exome sequencing of nearly 1,924 patients, mainly from two major registries, focusing on those with genetic prescreening negative results and early age at onset.
  • Researchers discovered 137 likely pathogenic variants in 51 genes among the patients, with many being novel, highlighting the challenges in diagnosing and understanding the disorder's genetic links.
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Predicting attentional focus: Heartbeat-evoked responses and brain dynamics during interoceptive and exteroceptive processing.

PNAS Nexus

December 2024

Institut du Cerveau-Paris Brain Institute-ICM, Inserm, Sorbonne Université, CNRS, APHP,Hôpital de la Pitié Salpêtrière, 75013 Paris, France.

Attention shapes our consciousness content and perception by increasing the probability of becoming aware and/or better encoding a selection of the incoming inner or outer sensory world. Engaging interoceptive and exteroceptive attention should elicit distinctive neural responses to visceral and external stimuli and could be useful in detecting covert command-following in unresponsive patients. We designed a task to engage healthy participants' attention toward their heartbeats or auditory stimuli and investigated whether brain dynamics and the heartbeat-evoked potential (HEP) distinguished covert interoceptive-exteroceptive attention.

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Background: Disorders of consciousness (DoC) refers to a group of clinical conditions of altered consciousness. To improve their diagnosis and prognosis, multimodal assessment can be of great importance. Informal caregivers of people with DoC who are confronted with new technologies as such can benefit from interventions to expand their health literacy, i.

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IAPRD new consensus classification of myoclonus.

Parkinsonism Relat Disord

December 2024

Department of Neurology, Mayo Clinic, 13400 East Shea Blvd, Scottsdale, AZ, 85259, USA. Electronic address:

Introduction: Recent new advances in myoclonus characterization and etiology justify an update of the 40-year-old respected classification of myoclonus proposed by Marsden, Hallett, and Fahn. New advances include genetic studies and clinical neurophysiology characterization.

Methods: The IAPRD appointed an expert panel to develop a new myoclonus classification.

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Article Synopsis
  • - KCNMA1-linked channelopathy leads to neurodevelopmental disorders, epilepsy, and non-epileptic episodes characterized by specific facial, behavioral, and physical symptoms.
  • - A review of 14 videos highlighted typical episode features: facial changes, behavioral arrest, loss of postural control, and quick recovery without drowsiness, with episodes often triggered by emotions.
  • - Distinguishing KCNMA1-related attacks from other conditions like paroxysmal dyskinesia and cataplexy will improve accurate diagnosis and targeted treatment for affected individuals.
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Lesional focal epilepsy (LFE) is a common and severe seizure disorder caused by epileptogenic lesions, including malformations of cortical development (MCD) and low-grade epilepsy-associated tumors (LEAT). Understanding the genetic etiology of these lesions can inform medical and surgical treatment. We conducted a somatic variant enrichment mega-analysis in brain tissue from 1386 individuals who underwent epilepsy surgery, including 599 previously unpublished individuals with ultra-deep ( > 1600x) targeted panel sequencing.

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Background: Persons with schizophrenia are excluded from psychedelic-assisted therapy due to concerns about the risk of triggering or worsening psychosis. However, there is limited meta-analytic data on the risk of psychedelic-induced psychosis in individuals with pre-existing psychotic disorders.

Methods: We conducted a systematic review, meta-analysis, and overview of reviews to assess the incidence of psychedelic-induced psychosis and symptom exacerbation in schizophrenia.

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Spectrum of IDH-mutant tumors in Ollier-Maffucci disease: the triple interaction theory.

Orphanet J Rare Dis

November 2024

Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau, ICM, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière - Charles Foix, Service de Neuro-oncologie, Paris, France.

Article Synopsis
  • The study aims to enhance understanding of tumor development in patients with Ollier disease (OD) and Maffucci syndrome (MS), focusing on IDH-mutated tumors and their origins.
  • It proposes that a single IDH-mutant cell could lead to various tumors due to early embryonic mutations and that not all mutated cells will display the IDH mutant characteristics.
  • Additionally, it suggests that specific genetic predispositions (SNPs) may increase the likelihood of developing particular tumors in these patients, linking developmental defects to tumor occurrence.
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Article Synopsis
  • - Genetic generalized epilepsy (GGE) includes types like childhood absence epilepsy and juvenile myoclonic epilepsy, showing a higher risk of occurrence in first-degree relatives of affected individuals, suggesting a strong genetic component.
  • - Research, including whole exome sequencing from families in Sudan, has identified specific genetic variants linked to GGE, indicating it is genetically diverse and likely influenced by multiple genes rather than a single cause.
  • - The study emphasizes the importance of examining familial cases, as well as using populations with unique genetic backgrounds, to better understand the complex genetics of GGE, reinforcing the idea that it may have oligogenic inheritance patterns.
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Microstructural Damage and Repair in the Spinal Cord of Patients With Early Multiple Sclerosis and Association With Disability at 5 Years.

Neurol Neuroimmunol Neuroinflamm

January 2025

From the Department of Neuroradiology (M.G., E.B., J.-C.F.), Rennes University Hospital; Empenn (M.G., B.C., E.B., A.M., V.C., G.B., J.-C.F., A.K.), INRIA, Rennes University-CNRS-INSERM; Department of Neurology (L.M., E.L.P., G.E., A.K.), Rennes University Hospital; Paris Brain Institute (ICM) (B.S., B.B.), Sorbonne University-CNRS-INSERM; and Neurology Department (B.S., B.B.), APHP St Antoine Hospital, Paris, France.

Background And Objectives: The dynamics of microstructural spinal cord (SC) damage and repair in people with multiple sclerosis (pwMS) and their clinical relevance have yet to be explored. We set out to describe patient-specific profiles of microstructural SC damage and change during the first year after MS diagnosis and to investigate their associations with disability and SC atrophy at 5 years.

Methods: We performed a longitudinal monocentric cohort study among patients with relapsing-remitting MS: first relapse <1 year, no relapse <1 month, and high initial severity on MRI (>9 T2 lesions on brain MRI and/or initial myelitis).

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Article Synopsis
  • The study aimed to explore patient interactions during disorders of arousal (DoA), despite current diagnoses focusing on absent responsiveness.
  • It involved three studies: a questionnaire on verbal responsiveness in 61 patients, auditory stimulation during sleep in 14 patients, and analysis of 364 home videos from 19 patients.
  • Findings revealed that many patients reported occasional conversations during episodes, indicating varying levels of consciousness and responsiveness, which challenge existing diagnostic criteria for DoA.
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WONOEP appraisal: Targeted therapy development for early onset epilepsies.

Epilepsia

November 2024

Saul R. Korey Department of Neurology, Isabelle Rapin Division of Child Neurology, Laboratory of Developmental Epilepsy, Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA.

The early onset epilepsies encompass a heterogeneous group of disorders, some of which result in drug-resistant seizures, developmental delay, psychiatric comorbidities, and sudden death. Advancement in the widespread use of targeted gene panels as well as genome and exome sequencing has facilitated the identification of different causative genes in a subset of these patients. The ability to recognize the genetic basis of early onset epilepsies continues to improve, with de novo coding variants accounting for most of the genetic etiologies identified.

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Hippocampal neuroinflammation induced by lipopolysaccharide causes sex-specific disruptions in action selection, food approach memories, and neuronal activation.

Brain Behav Immun

February 2025

School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, New South Wales 2007, Australia; Centre for Neuroscience and Regenerative Medicine, St. Vincent's Centre for Applied Medical Research, St. Vincent's Health Network, Sydney, New South Wales 2010, Australia. Electronic address:

Hippocampal neuroinflammation is present in multiple diseases and disorders that impact motivated behaviour in a sex-specific manner, but whether neuroinflammation alone is sufficient to disrupt this behaviour is unknown. We investigated this question here using mice. First, the application of an endotoxin to primary cultures containing only hippocampal neurons did not affect their activation.

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Let's focus on the insula in addiction: A refined anatomical exploration of insula in severe alcohol and cocaine use disorders.

Eur Psychiatry

November 2024

Normandie Université, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders", NeuroPresage Team, Cyceron, Caen, France.

Article Synopsis
  • The study investigates the changes in gray matter (GM) volume in the insula, a brain region linked to addiction, comparing severe alcohol use disorder (sAUD) and severe cocaine use disorder (sCUD).
  • Researchers analyzed 12 subregions of the insula using a sample of 50 sAUD patients, 61 sCUD patients, and 36 healthy controls, finding overall lower insula volume in both disorders, particularly in the anterior long gyrus (ALG).
  • The results highlight both shared and distinct patterns of insula volume deficits between sAUD and sCUD, suggesting that while the insula is important in substance use disorders, each disorder may have unique characteristics that could inform treatment approaches.
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Gliomas are the most common primary malignant brain tumours in adults. Despite decades of research into novel therapeutic approaches, the prognosis remains poor. PARP1-2 are critical for DNA repair, cell survival and genomic stability and PARP inhibition (PARPi) may be a promising therapeutic approach for gliomas.

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Obsessive-compulsive disorder (OCD) is a frequent and disabling condition, with many patients being treatment-resistant. Improved understanding of its neurobiology is vital for better therapies. Evidence is still conflicting regarding specific serotonergic-related dysfunctions in OCD.

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Article Synopsis
  • - The study focused on how parieto-motor paired stimulation affects brain plasticity in patients with writer's cramp (WC) and cervical dystonia (CD) compared to healthy volunteers.
  • - Using paired transcranial magnetic stimulation, researchers found that the stimulation increased motor cortex excitability in WC patients but not in CD patients or healthy individuals.
  • - The results indicate that while the stimulation enhances brain function in WC, it doesn't seem to relate to changes in the connectivity between the posterior parietal cortex and the motor cortex.
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Parkinson's disease is a neurodegenerative disorder primarily characterized by motor impairments. However, non-motor symptoms are increasingly recognized and studied. Among these, sexual dysfunctions are common yet remain underexplored.

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Unveiling spatial and non-spatial aspects of neglect in everyday behavior.

Cortex

January 2025

Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, AP-HP, Hôpital de la Pitié-Salpêtrière, F-75013 Paris, France; Laboratory of Functional Neurosciences (UR UPJV 4559), University Hospital of Amiens and University of Picardie Jules Verne, Amiens, France.

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