Stage 4: Neuroimmune Activation
Years 0 to 5
Timeframe: Years 0 to 5 after clinical onset
Complement cascade activated, microglial pruning accelerates. Progressive synaptic loss. Mild-to-moderate cognitive impairment.
Key Events
- Complement cascade activation
- Microglial pruning accelerates
- Progressive synaptic loss
- Mild-to-moderate impairment