Evidence map›Paper›PMID 30480026›Full record

ArticleAnnals of clinical and translational neurology2018

Periventricular nodular heterotopia in 22q11.2 deletion and frontal lobe migration.

Arezoo Rezazadeh, Eduard Bercovici, Tim-Rasmus Kiehl, Eva W Chow, Timo Krings, Anne S Bassett, Danielle M Andrade

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 29% 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

11 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Women With Genetic Epilepsies.Neurology. Genetics · 2025
    Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Heterotopia in Individuals with 22q11.2 Deletion Syndrome.AJNR. American journal of neuroradiology · 2021
    Article
  9. Review
  10. Implications of Extended Inhibitory Neuron Development.International journal of molecular sciences · 2021
    Review
  11. 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

7 authors at 3 institutions in 1 country.

Arezoo RezazadehDivision of Neurology Department of Medicine Krembil Neuroscience Centre Toronto Western Hospital University of Toronto Toronto Ontario Canada.
Eduard BercoviciDivision of Neurology Department of Medicine Krembil Neuroscience Centre Toronto Western Hospital University of Toronto Toronto Ontario Canada.
Tim-Rasmus KiehlDepartment of Pathology University Health Network University of Toronto Toronto Ontario Canada.
Eva W ChowClinical Genetics Research Program Centre for Addiction and Mental Health and Department of Psychiatry Toronto Ontario Canada.
Timo KringsDivision of Neuroradiology Joint Department of Medical Imaging Toronto Western Hospital University Health Network University of Toronto Toronto Canada.
Anne S BassettClinical Genetics Research Program Centre for Addiction and Mental Health and Department of Psychiatry Toronto Ontario Canada.
Danielle M AndradeDivision of Neurology Department of Medicine Krembil Neuroscience Centre Toronto Western Hospital University of Toronto Toronto Ontario Canada.
University of Toronto · CACentre for Addiction and Mental Health · CAToronto Western Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe aimed to delineate the distribution of periventricular nodular heterotopia (PNH) in patients with 22q11.2 microdeletion syndrome (22q11.2DS) and place this in the context of other genetic forms of PNH.

methodsWe retrospectively analyzed brain imaging and postmortem data available for adult patients with 22q11.2DS. We included only those with good quality MRI data (

resultsOf the total seven patients (M = 4, F = 3; age: 19-61 years) identified to have PNH, six had a history of seizures, six had schizophrenia, six had variable levels of intellectual disability, and two had obsessive compulsive disorder. In all seven patients, the nodules were located over the dorsal pole of the frontal horn of the lateral ventricles. The nodules were small, noncontiguous, and ranged in number from 1 to 10 per individual. Our review identified 37 genetic conditions associated with PNH. With the cases reported here, 22q11.2DS becomes the fifth most commonly reported genetic condition, and the third most common copy number variation, associated with PNH.

interpretationThe neuropsychiatric manifestations in our patients with PNH support other data indicating abnormal neurodevelopment as part of the pathogenesis of 22q11.2DS.The location and cellular characteristics of PNH in 22q11.2DS overlaps with a group of migrating postnatal interneurons termed Arc cells, although more research is needed to confirm that PNH in 22q11.2DS represents Arc cells arrested in their migratory pathway.

Identifiers

PMID30480026
PMCPMC6243376
OpenAlexW2892609412

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.