Evidence map›Paper›PMID 19738176›Full record

ReviewNeurology2009

ALS motor phenotype heterogeneity, focality, and spread: deconstructing motor neuron degeneration.

John M Ravits, Albert R La Spada

Abstract readReview
In one paragraph

Review in Neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 291 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
291citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

291 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
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  6. Article
  7. Natural history of 441 cases of bulbar onset motor neuron disease (MND) in China: a single-center retrospective study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  8. Review
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  10. Beneficial Effects of Putative Hydrogen Sulfide (HMolecules (Basel, Switzerland) · 2026
    Article
  11. Observational
  12. Article
  13. Article
  14. Article
  15. Article
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  18. Article
  19. Article
  20. Introduction to the Supplement.Muscle & nerve · 2026
    Article

231 more citing papers are in PubMed but not listed here.

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

2 authors.

John M RavitsSection of Neurology, Virginia Mason Medical Center, Seattle, WA, USA. jravits@benaroyaresearch.org
Albert R La Spada

Funding

MODELS OF SBMA MOTOR NEURON DEGENERATIONR01NS041648 · NINDS · UNIVERSITY OF WASHINGTON · PI LA SPADA, ALBERT R · 2001 to 2014
$4.5M
Microgenomic Studies of ALSR21NS051738 · NINDS · BENAROYA RESEARCH INST AT VIRGINIA MASON · PI RAVITS, JOHN · 2006 to 2007
$441k
NINDS NIH HHS NS041648NINDS NIH HHS NS051738NINDS NIH HHS R21 NS051738
6 · The paper itself

Abstract

Heterogeneity of motor phenotypes is a clinically well-recognized fundamental aspect of amyotrophic lateral sclerosis (ALS) and is determined by variability of 3 independent primary attributes: body region of onset; relative mix of upper motor neuron (UMN) and lower motor neuron (LMN) deficits; and rate of progression. Motor phenotypes are determined by the anatomy of the underlying neuropathology and the common defining elements underlying their heterogeneity are that motor neuron degeneration is fundamentally a focal process and that it spreads contiguously through the 3-dimensional anatomy of the UMN and LMN levels, thus causing seemingly complex and varied clinical manifestations. This suggests motor neuron degeneration in ALS is in actuality a very orderly and actively propagating process and that fundamental molecular mechanisms may be uniform and their chief properties deduced. This also suggests opportunities for translational research to seek pathobiology directly in the less affected regions of the nervous system.

Indexed as

Amyotrophic Lateral SclerosisAnimalsHumansMotor NeuronsNerve DegenerationNeural ConductionPhenotype

Identifiers

PMID19738176
PMCPMC2739608

What OpenQuestion holds

Textmetadata
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.