Amyotrophic lateral sclerosis: a clinical review

Area of Science:

• Neuroscience
• Genetics
• Neurology

Background:

• Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder primarily affecting motor neurons.
• Extra-motor manifestations, including behavioral and cognitive changes, are increasingly recognized in ALS patients.
• A significant subset of ALS cases exhibit features overlapping with frontotemporal dementia (FTD).

Purpose of the Study:

• To provide a comprehensive review of amyotrophic lateral sclerosis (ALS).
• To discuss the epidemiology, etiology, pathogenesis, clinical features, diagnosis, and treatment of ALS.
• To highlight current understanding and future prospects in ALS research.

Main Methods:

• This review synthesizes existing literature on ALS.
• It covers various aspects including genetic associations, clinical presentation, and therapeutic strategies.
• The review discusses epidemiological data and etiological factors.

Main Results:

• ALS is characterized by motor neuron loss, leading to progressive muscle weakness and limited survival.
• Extra-motor symptoms occur in up to 50% of cases, with 10-15% meeting FTD criteria.
• The C9orf72 gene expansion is a major genetic cause, linking ALS and FTD molecularly.

Conclusions:

• ALS is a heterogeneous disease with complex genetic and molecular underpinnings.
• Effective management relies on multidisciplinary care, including supportive and symptomatic treatments.
• Further research is crucial for developing cures and effective therapies for ALS.