Evidence map›Paper›PMID 20390432›Full record

ArticleNeurogenetics2010

Novel SPG11 mutations in Asian kindreds and disruption of spatacsin function in the zebrafish.

Laura Southgate, Dimitra Dafou, Jacqueline Hoyle, Nan Li, Esther Kinning, Peter Critchley, Andrea H Németh, Kevin Talbot, Parayil S Bindu, Sanjib Sinha and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Neurogenetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 23% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Frontiers in neuroscience · 2019
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  13. NeuroImage. Clinical · 2018
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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

15 authors at 8 institutions in 2 countries.

Laura SouthgateDepartment of Medical and Molecular Genetics, King's College London, School of Medicine, Floor 8 Tower Wing, Guy's Hospital, London, SE1 9RT, UK.
Dimitra Dafou
Jacqueline Hoyle
Nan Li
Esther Kinning
Peter Critchley
Andrea H Németh
Kevin Talbot
Parayil S Bindu
Sanjib Sinha
Arun B Taly
Seetharam Raghavendra
Ferenc Müller
Eamonn R Maher
Richard C Trembath
Guy's Hospital · GBNational Institute of Mental Health and Neurosciences · INUniversity of Birmingham · GBUniversity Hospitals of Leicester NHS Trust · GBBangalore Diabetes Centre · INChurchill Hospital · GBKing's College Hospital · GBUniversity of Oxford · GB

Funding

Wellcome TrustWellcome Trust 062346/Z/00/ZWellcome Trust 078751/Z/05/Z
6 · The paper itself

Abstract

Autosomal recessive hereditary spastic paraplegia with thin corpus callosum (HSP-TCC) maps to the SPG11 locus in the majority of cases. Mutations in the KIAA1840 gene, encoding spatacsin, have been shown to underlie SPG11-linked HSP-TCC. The aim of this study was to perform candidate gene analysis in HSP-TCC subjects from Asian families and to characterize disruption of spatacsin function during zebrafish development. Homozygosity mapping and direct sequencing were used to assess the ACCPN, SPG11, and SPG21 loci in four inbred kindreds originating from the Indian subcontinent. Four novel homozygous SPG11 mutations (c.442+1G>A, c.2146C>T, c.3602_3603delAT, and c.4846C>T) were identified, predicting a loss of spatacsin function in each case. To investigate the role of spatacsin during development, we additionally ascertained the complete zebrafish spg11 ortholog by reverse transcriptase PCR and 5′ RACE. Analysis of transcript expression through whole-mount in situ hybridization demonstrated ubiquitous distribution, with highest levels detected in the brain. Morpholino antisense oligonucleotide injection was used to knock down spatacsin function in zebrafish embryos. Examination of spg11 morphant embryos revealed a range of developmental defects and CNS abnormalities, and analysis of axon pathway formation demonstrated an overall perturbation of neuronal differentiation. These data confirm loss of spatacsin as the cause of SPG11-linked HSP-TCC in Asian kindreds, expanding the mutation spectrum recognized in this disorder. This study represents the first investigation in zebrafish addressing the function of a causative gene in autosomal recessive HSP and identifies a critical role for spatacsin during early neural development in vivo.

Indexed as

MutationAdaptor Proteins, Signal TransducingAdolescentAdultAmino Acid SequenceAnimalsAsian PeopleCarrier ProteinsFemaleHumansIndiaMaleMicrosatellite RepeatsMolecular Sequence DataProteinsSequence Homology, Amino AcidAdaptor Proteins, Signal TransducingCarrier ProteinsProteinsSPG11 protein, humanSPG21 protein, human

Identifiers

PMID20390432
PMCPMC2944959
OpenAlexW2033242271

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LicenceCC BY-NC
Read underepoch 390

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.