Related Experiment Video
Updated: Apr 17, 2026
08:59
Real-Time Fluorescent Measurement of Synaptic Functions in Models of Amyotrophic Lateral Sclerosis
Published on: July 16, 2021
3.3K
SnapShot: Genetics of ALS and FTD
Rita Guerreiro1, José Brás1, John Hardy1
1Department of Molecular Neuroscience, Institute of Neurology, University College London, Queen Square, London WC1N 1PJ, UK.
Cell
|February 14, 2015
Summary
Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) share genetic links and clinical overlap, suggesting they are part of a disease spectrum. Research indicates mutations in the same genes cause FTD, ALS, or both conditions.
Area of Science:
- Neuroscience
- Genetics
- Neurology
Background:
- Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) are distinct neurodegenerative disorders.
- FTD is characterized by dementia with behavioral and speech deficits.
- ALS involves motor neuron degeneration leading to movement impairment.
Purpose of the Study:
- To explore the relationship between Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS).
- To investigate the concept of FTD and ALS existing on a disease spectrum.
- To highlight the genetic underpinnings connecting these two conditions.
Main Methods:
- Clinical case review.
- Genetic analysis of affected individuals and families.
- Comparative study of FTD and ALS patient cohorts.
Main Results:
- FTD and ALS exhibit significant clinical overlap, with shared symptoms observed within families and individuals.
- Genetic studies reveal mutations in identical genes are associated with FTD, ALS, and overlapping FTD/ALS phenotypes.
- These findings support the hypothesis that FTD and ALS are part of a continuous disease spectrum.
Conclusions:
- Frontotemporal dementia and amyotrophic lateral sclerosis are interconnected neurodegenerative conditions.
- The genetic and clinical evidence strongly supports a disease continuum between FTD and ALS.
- Further research into this spectrum may reveal novel therapeutic targets.
Related Concept Videos
01:29Alzheimer Disease l: Introduction
2
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
2
01:23Alzheimer Disease ll: Pathophysiology
1
Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and...
1
01:26Alzheimer's Disease: Overview
2.0K
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
2.0K
01:28Human Genetics
1.9K
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
1.9K
01:22Dementia l: Introduction
1
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
1
01:24Parkinson Disease ll: Pathophysiology
3
Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
3