Cxcl13, Ccl2 and Ccl19 are 3 pro-inflammatory chemokines previously associated with cognitive impairments and that are also upregulated in AD, Ccl19 being a peripheral biomarker (Chen et al., 2023; Lee et al., 2018; Sorrentino et al., 2021). Here, CXCL13 is linked to Alzheimer disease.