Psen2 Mutations In Alzheimer'S Disease plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Psen2 Mutations In Alzheimer'S Disease represents an important genetic factor in neurodegenerative disease research. This page provides comprehensive information about its role in disease mechanisms, genetic associations, and therapeutic implications. [1]
Presenilin 2 (PSEN2) is a less common cause of autosomal dominant familial Alzheimer's disease, with approximately 40 pathogenic mutations identified. PSEN2 encodes the second catalytic subunit of γ-secretase, with mutations causing a later-onset and more variable form of familial AD compared to PSEN1. [2]
Presenilin 2 is a homolog of presenilin 1: [3]
| Mutation | Age of Onset | Penetrance | Aβ Effect |
|---|---|---|---|
| N141I | ~55-70 years | ~95% | Aβ42 ↑ |
| M239V | ~60-75 years | ~80% | Aβ42 ↑ |
| T122P | ~60-70 years | Variable | Aβ42 ↑ |
| S130L | ~65-75 years | Reduced | Aβ42 ↑ |
| A85V | Variable | Low | Mild effect |
The original PSEN2 mutations were identified in the Volga-German families:
| Feature | PSEN1 | PSEN2 |
|---|---|---|
| Age of onset | 30-60 years | 50-75 years |
| Penetrance | ~100% | 70-95% |
| Mutation count | >200 | ~40 |
| Phenotype | More severe | More variable |
| CAA frequency | Lower | Higher |
PSEN2 carriers eligible for prevention trials
DIAN: Includes PSEN2 mutation carriers
API: Alzheimer's Prevention Initiative
Psen2 Mutations In Alzheimer'S Disease plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Psen2 Mutations In Alzheimer'S Disease has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
This section highlights recent publications relevant to this disease.