Evidence map›Paper›PMID 36461712›Full record

ArticleEpilepsia open2023

Basal ganglia dysplasia and mTORopathy: A potential cause of postoperative seizures in focal cortical dysplasia.

Wei Shern Lee, Emma Macdonald-Laurs, Sarah E M Stephenson, Colleen D'Arcy, Duncan MacGregor, Richard J Leventer, Wirginia Maixner, A Simon Harvey, Paul J Lockhart

Open access · goldAbstract read
In one paragraph

Article in Epilepsia open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.6field-weighted citation impact, top 27% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 3 citations in OpenAlex.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Wei Shern LeeMurdoch Children's Research Institute, Parkville, Victoria, Australia.ORCID 0000-0002-9108-0258
Emma Macdonald-LaursDepartment of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia.ORCID 0000-0002-9894-4610
Sarah E M StephensonMurdoch Children's Research Institute, Parkville, Victoria, Australia.
Colleen D'ArcyDepartment of Anatomical Pathology, The Royal Children's Hospital, Parkville, Victoria, Australia.
Duncan MacGregorDepartment of Anatomical Pathology, The Royal Children's Hospital, Parkville, Victoria, Australia.
Richard J LeventerMurdoch Children's Research Institute, Parkville, Victoria, Australia.
Wirginia MaixnerMurdoch Children's Research Institute, Parkville, Victoria, Australia.
A Simon HarveyMurdoch Children's Research Institute, Parkville, Victoria, Australia.ORCID 0000-0001-6388-7444
Paul J LockhartMurdoch Children's Research Institute, Parkville, Victoria, Australia.ORCID 0000-0003-2531-8413
Royal Children's Hospital · AUThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pathogenic somatic MTOR variants in the cerebral cortex are a frequent cause of focal cortical dysplasia (FCD). We describe a child with drug and surgery-resistant focal epilepsy due to FCD type II who developed progressive enlargement and T2 signal hyperintensity in the ipsilateral caudate and lentiform nuclei. Histopathology of caudate nucleus biopsies showed dysmorphic neurons, similar to those in resected cortex. Genetic analysis of frontal and temporal cortex and caudate nucleus identified a pathogenic somatic MTOR variant [NM_004958.4:c.4375G > C (p.Ala1459Pro)] that was not present in blood-derived gDNA. The mean variant allele frequency ranged from 0.4% to 3.2% in cerebral cortex and up to 5.4% in the caudate nucleus. The basal ganglia abnormalities suggest more widespread, potentially hemispheric dysplasia in this patient, consistent with the pathogenic variant occurring in early cerebral development. This finding provides a potential explanation for persistent seizures in some patients with seemingly complete resection of FCD or disconnection of a dysplastic hemisphere.

Indexed as

BrainFocal Cortical DysplasiaBasal GangliaChildHumansSeizuresTOR Serine-Threonine KinasesTOR Serine-Threonine Kinasesbrain malformationdysmorphic neuronepilepsygeneticssomatic mosaicism

Identifiers

PMID36461712
PMCPMC9977751
OpenAlexW4310640727

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.