Evidence map›Paper›PMID 31799751›Full record

ArticleHuman mutation2020

Comparison of the functional and structural characteristics of rare TSC2 variants with clinical and genetic findings.

Luiz G Dufner Almeida, Santoesha Nanhoe, Andrea Zonta, Mitra Hosseinzadeh, Regina Kom-Gortat, Peter Elfferich, Gerben Schaaf, Annegien Kenter, Daniel Kümmel, Nicola Migone and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Human mutation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Neurology. Genetics · 2026
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  4. Article
  5. Review
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  7. Article
  8. Targeted Genomic Sequencing ofHuman mutation · 2023
    Article
  9. Article
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  12. Article
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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

13 authors at 6 institutions in 6 countries.

Luiz G Dufner AlmeidaDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Santoesha NanhoeDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Andrea ZontaDepartment of Medical Sciences, University of Turin, Turin, Italy.
Mitra HosseinzadehDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Regina Kom-GortatDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Peter ElfferichDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Gerben SchaafDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.
Annegien KenterDepartment of Developmental Biology, Erasmus Medical Center, Rotterdam, The Netherlands.
Daniel KümmelBiochemistry and Structural Biology Section, Institute of Biochemistry, University of Munster, Munster, Germany.
Nicola MigoneDepartment of Medical Sciences, University of Turin, Turin, Italy.
Sue PoveyDepartment of Genetics, Evolution and Environment, University College London, London, UK.
Rosemary EkongDepartment of Genetics, Evolution and Environment, University College London, London, UK.ORCID 0000-0002-5984-7893
Mark NellistDepartment of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.ORCID 0000-0003-0949-1566
Erasmus MC · NLUniversity of Turin · ITUniversidade de São Paulo · BRUniversidad Pedagógica de Durango · MXUniversity College London · GBUniversity of Münster · DE

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 88881.132401/2016-01
6 · The paper itself

Abstract

The TSC1 and TSC2 gene products interact to form the tuberous sclerosis complex (TSC), an important negative regulator of the mechanistic target of rapamycin complex 1 (TORC1). Inactivating mutations in TSC1 or TSC2 cause TSC, and the identification of a pathogenic TSC1 or TSC2 variant helps establish a diagnosis of TSC. However, it is not always clear whether TSC1 and TSC2 variants are inactivating. To determine whether TSC1 and TSC2 variants of uncertain clinical significance affect TSC complex function and cause TSC, in vitro assays of TORC1 activity can be employed. Here we combine genetic, functional, and structural approaches to try and classify a series of 15 TSC2 VUS. We investigated the effects of the variants on the formation of the TSC complex, on TORC1 activity and on TSC2 pre-mRNA splicing. In 13 cases (87%), the functional data supported the hypothesis that the identified TSC2 variant caused TSC. Our results illustrate the benefits and limitations of functional testing for TSC.

Indexed as

Genetic Association StudiesGenetic Predisposition to DiseaseMutationPhenotypeAmino Acid SubstitutionGene Knockdown TechniquesGenotypeHumansModels, MolecularProtein BindingProtein ConformationProtein MultimerizationRNA SplicingStructure-Activity RelationshipTuberous Sclerosis Complex 2 ProteinTSC2 protein, humanTuberous Sclerosis Complex 2 ProteinCRISPR/Cas9functional assayTORC1TSC2tuberous sclerosis complexVUS

Identifiers

PMID31799751
PMCPMC7154745
OpenAlexW2992002555

What OpenQuestion holds

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LicenceCC BY
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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.