Frontotemporal Dementia: A Clinical Review.

Area of Science:

• Neuroscience
• Genetics
• Neurology

Background:

• Frontotemporal dementias (FTDs) represent a significant cause of dementia in younger individuals.
• These conditions are characterized by profound changes in social behavior and language.
• FTDs are increasingly understood as
• molecular nexopathies
• : diseases where specific proteins selectively damage brain networks.

Purpose of the Study:

• To present a clinical roadmap for the diagnosis and assessment of FTDs.
• To connect emerging insights into molecular mechanisms with clinical presentations.
• To guide management strategies and explore disease modification prospects.

Main Methods:

• Review of clinical, neuroanatomical, and pathological features of FTDs.
• Analysis of genetic factors, particularly mutations in three key genes.
• Correlation of cellular-level pathogenic protein effects with neural network dysfunction and clinical symptoms.

Main Results:

• FTDs present a diverse clinical spectrum, primarily impacting social behavior and language.
• Genetic mutations in specific genes are linked to a substantial proportion of FTD cases.
• Predicting molecular pathology from clinical and radiological signs is challenging but improving, especially in genetically mediated forms.

Conclusions:

• A clinical roadmap is provided to aid in the diagnosis and assessment of FTDs.
• Understanding the molecular basis of FTDs offers opportunities for presymptomatic diagnosis and intervention.
• Effective management and future disease modification strategies are outlined.