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Automated, Long-term Behavioral Assay for Cognitive Functions in Multiple Genetic Models of Alzheimer's Disease, Using IntelliCage

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[JaCALS: a prospective multicenter ALS cohort study].

Naoki Atsuta¹, Ryoichi Nakamura, Hazuki Watanabe

¹Department of Neurology, Nagoya University Graduate School of Medicine.

Rinsho Shinkeigaku = Clinical Neurology

|January 27, 2012

Summary

Japanese patients with Amyotrophic Lateral Sclerosis (ALS) show older age at onset is a risk factor for faster disease progression. Genome-wide association studies identified the ZNF512B gene linked to ALS susceptibility.

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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

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Area of Science:

Neurology
Genetics
Epidemiology

Context:

Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease with significant impact on patient function and survival.
Understanding the longitudinal course and genetic factors in diverse populations like Japan is crucial for developing effective treatments.
The Japanese Consortium for Amyotrophic Lateral Sclerosis research (JaCALS) was established to address these needs.

Purpose:

To establish a multicenter registration and follow-up system for Japanese ALS patients.
To investigate the longitudinal clinical course and identify risk factors for disease progression.
To conduct genetic studies, including genome-wide association studies (GWAS), to identify genes associated with ALS susceptibility.

Summary:

The JaCALS system successfully registered 571 Japanese ALS patients from 22 facilities, collecting genomic DNA and longitudinal clinical data.
Analysis of 279 patients revealed that older age at onset is a significant risk factor for earlier mortality, need for mechanical ventilation, and functional decline (speech, swallowing, upper limb).
GWAS involving 1,305 ALS samples identified the ZNF512B gene as being associated with ALS susceptibility.

Impact:

The JaCALS system provides a robust platform for ongoing ALS research in Japan.
Findings highlight age at onset as a critical prognostic factor, aiding in patient management and clinical trial stratification.
The identification of ZNF512B offers a new target for understanding ALS pathogenesis and developing potential therapeutic strategies.