| Gene Symbol | MICROGLIALACTIVATIONBIOMARKERPANEL |
| Function | TREM2 is expressed on microglia and controls microglial proliferation, migration, and phagocytosis. The soluble form (sTREM2) reflects TREM2 processing and microglial activation |
| Gene | CHI3L1 |
| Location | Astrocytes, microglia |
| CSF levels | 50-150 ng/mL |
| Elevation pattern | AD > controls |
| Specificity | Astrocyte activation |
| Databases | GeneCardsUniProtNCBI GeneHPASTRING |