Evidence map›Paper›PMID 27619540›Full record

ReviewNeuroscience letters2017

Pathogenic determinants and mechanisms of ALS/FTD linked to hexanucleotide repeat expansions in the C9orf72 gene.

Xinmei Wen, Thomas Westergard, Piera Pasinelli, Davide Trotti

Open access · greenAbstract readReview
In one paragraph

Review in Neuroscience letters, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Intrathecal (GActa neuropathologica communications · 2026
    Article
  4. Intrathecal (GbioRxiv : the preprint server for biology · 2026
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  10. Review
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  15. Breakdown of the central synapses in C9orf72-linked ALS/FTD.Frontiers in molecular neuroscience · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

4 authors at 2 institutions in 1 country.

Xinmei WenJefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Department of Neuroscience, Thomas Jefferson University, Philadelphia, PA 19107, USA. Electronic address: Xinmei.Wen@jefferson.edu.
Thomas WestergardJefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Department of Neuroscience, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Piera PasinelliJefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Department of Neuroscience, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Davide TrottiJefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Department of Neuroscience, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Jefferson Hospital for Neuroscience · USThomas Jefferson University · US

Funding

Studies of NMJ structure and function in mutant FUS-ALS and beyondR56NS092572 · NINDS · THOMAS JEFFERSON UNIVERSITY · PI PASINELLI, PIERA · 2015 to 2015
$478k
Development of a mouse model of C9ORF72 ALS/FTD expressing RAN translated peptideR21NS090912 · NINDS · THOMAS JEFFERSON UNIVERSITY · PI TROTTI, DAVIDE · 2014 to 2015
$428k
NINDS NIH HHS R21 NS090912NINDS NIH HHS R56 NS092572
6 · The paper itself

Abstract

Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are two apparently distinct neurodegenerative diseases, the former characterized by selective loss of motor neurons in the brain and spinal cord and the latter characterized by selective atrophy of frontal and temporal lobes. Over the years, however, growing evidence from clinical, pathological and genetic findings has suggested that ALS and FTD belong to the same clinic-pathological spectrum disorder. This concept has been further supported by the identification of the most common genetic cause for both diseases, an aberrantly expanded hexanucleotide repeat GGGGCC/ CCCCGG sequence located in a non-coding region of the gene C9orf72. Three hypotheses have been proposed to explain how this repeats expansion causes diseases: 1) C9orf72 haploinsufficiency-expanded repeats interfere with transcription or translation of the gene, leading to decreased expression of the C9orf72 protein; 2) RNA gain of function-RNA foci formed by sense and antisense transcripts of expanded repeats interact and sequester essential RNA binding proteins, causing neurotoxicity; 3) Repeat associated non-ATG initiated (RAN) translation of expanded sense GGGGCC and antisense CCCCGG repeats produces potential toxic dipeptide repeat protein (DPR). In this review, we assess current evidence supporting or arguing against each proposed mechanism in C9 ALS/FTD disease pathogenesis. Additionally, controversial findings are also discussed. Lastly, we discuss the possibility that the three pathogenic mechanisms are not mutually exclusive and all three might be involved in disease.

Indexed as

DNA Repeat ExpansionAmyotrophic Lateral SclerosisAnimalsC9orf72 ProteinFrontotemporal DementiaHaploinsufficiencyHumansMutationProtein BiosynthesisProteinsC9orf72 ProteinC9orf72 protein, humanProteinsALSC9orf72Dipeptide repeat proteinFTDRepeat expansion diseaseRNA foci

Identifiers

PMID27619540
PMCPMC5148671
OpenAlexW2520899139

What OpenQuestion holds

Textmetadata
LicenceTDM
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.