CHI3L1 and Alzheimer disease: Cerebrospinal fluid (CSF) and plasma biomarkers related glial function, such as soluble triggering receptor expressed on myeloid cells 2 (sTREM2), chitinase‐3‐like protein 1 (YKL‐40) and glial fibrillary acidic protein (GFAP) have shown promise in reflecting neuroinflammation levels across different disease stages and correlating with core AD biomarkers.18, 19, 20, 21, 22, 23