Apoe Gene

The Apolipoprotein E (APOE) gene plays a significant role in Alzheimer's disease and dementia. It encodes a protein involved in lipid transport and neurorepair in the brain. There are three common forms of the APOE gene: APOE ε2, APOE ε3, and APOE ε4. Of these, APOE ε4 is the most established genetic risk factor for late-onset Alzheimer's disease. Individuals who inherit one copy of APOE ε4 have an increased risk, while those with two copies have an even higher risk. APOE ε4 is thought to contribute to Alzheimer's by influencing amyloid beta aggregation and clearance, as well as neuroinflammation and neuronal injury. Understanding the role of APOE in Alzheimer's helps in identifying those at higher risk and developing targeted therapies aimed at delaying or preventing the onset of the disease.