Evidence map›Paper›PMID 26555645›Full record

ArticlePsychiatric genetics2016

Mutation screening of SCN2A in schizophrenia and identification of a novel loss-of-function mutation.

Liam S Carroll, Rebecca Woolf, Yousef Ibrahim, Hywel J Williams, Sarah Dwyer, James Walters, George Kirov, Michael C O'Donovan, Michael J Owen

Open access · greenAbstract read
In one paragraph

Article in Psychiatric genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Genetic polymorphisms in SCN2A are not associated with epilepsy risk and AEDs response: evidence from a meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021
    Pooled it
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  5. DecipheringArXiv · 2024
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  6. Distinctive In Vitro Phenotypes in iPSC-Derived Neurons From Patients With Gain- and Loss-of-FunctionThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
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  15. Frontiers in molecular neuroscience · 2022
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  20. NaScientific reports · 2019
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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 1 institution in 1 country.

Liam S CarrollMRC Centre for Neuropsychiatric Genetics and Genomics, Department of Psychological Medicine & Neurology, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK.
Rebecca Woolf
Yousef Ibrahim
Hywel J Williams
Sarah Dwyer
James Walters
George Kirov
Michael C O'Donovan
Michael J Owen
Cardiff University · GB

Funding

Medical Research Council G0800509Medical Research Council G0801418Medical Research Council G9309834Medical Research Council MR/L010305/1Wellcome Trust
6 · The paper itself

Abstract

objectivesThere is a growing body of evidence suggesting a shared genetic susceptibility between many neuropsychiatric disorders, including schizophrenia, autism, intellectual disability (ID) and epilepsy. The sodium channel, voltage-gated type II α subunit gene SCN2A has been shown to exhibit loss-of-function (LoF) mutations in individuals with seizure disorders, ID, autism and schizophrenia. The role of LoF mutations in schizophrenia is still uncertain with only one such mutation identified to date.

methodsTo seek additional evidence for a role for LoF mutations at SCN2A in schizophrenia we performed mutation screening of the entire coding sequence in 980 schizophrenia cases. Given an absence of LoF mutations in a public exome cohort (ESP6500, N=6503), we did not additionally sequence controls.

resultsWe identified a novel, nonsense (i.e. stop codon) mutation in one case (E169X) that is absent in 4300 European-American and 2203 African-American individuals from the NHLBI Exome Sequencing Project. This is the second LoF allele identified in a schizophrenia case to date. We also show a novel, missense variant, V1282F, that occurs in two cases and is absent in the control dataset.

conclusionWe argue that very rare, LoF mutations at SCN2A act in a moderately penetrant manner to increase the risk of developing several neuropsychiatric disorders including seizure disorders, ID, autism and schizophrenia.

Indexed as

DNA Mutational AnalysisFemaleGenetic Predisposition to DiseaseHumansMaleMutation, MissenseNAV1.2 Voltage-Gated Sodium ChannelSchizophreniaUnited KingdomNAV1.2 Voltage-Gated Sodium ChannelSCN2A protein, human

Identifiers

PMID26555645
PMCPMC4756433
OpenAlexW2177779297

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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.