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[The spread pattern and survival in sporadic ALS]

Fumiharu Kimura1

  • 1Division of Neurology, The First Department of Internal Medicine, Osaka Medical College.

Rinsho Shinkeigaku = Clinical Neurology
|December 1, 2012
PubMed

Insights

The speed of symptom progression in Amyotrophic Lateral Sclerosis (ALS) predicts survival. Rapidly spreading symptoms in ALS patients are linked to shorter survival times.

Area of Science:

  • Neurology
  • Pathology

Context:

  • Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease.
  • A prion-like spread of misfolding pathology is hypothesized in ALS progression.

Purpose:

  • To investigate the pattern and direction of clinical lower motor neuron involvement over time in sporadic ALS patients.
  • To determine the correlation between symptom spread patterns and patient survival.

Summary:

  • This study followed 150 sporadic ALS patients until respiratory symptom onset.
  • The time from symptom onset to the involvement of a second region significantly correlated with survival.
  • A rapid spread pattern (two regions within 3 months) was associated with survival of less than 5 years.
  • Symptom progression in ALS predominantly follows a contiguous, longitudinal pattern, though non-contiguous spread occurred in 13% of cases.

Impact:

  • Identifies symptom propagation speed as a significant prognostic indicator in ALS.
  • Suggests that understanding the pattern and direction of ALS symptom spread can offer valuable prognostic insights.
  • Supports the concept of a gradual, anatomically directed spread of ALS pathology.

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