PILRA and cerebral amyloid angiopathy: Higher CSF levels of PILRA-M14 and PILRA-deltaTM (2SMR, SomaScan) were associated with larger WMH volume, whereas higher CSF and plasma PILRA-M14/deltaTM (2SMR, SomaScan) and plasma PILRA (observational, Olink) were associated with smaller WM-PVS burden, potentially reflecting a protective effect on the cerebral amyloid angiopathy subtype of cSVD, of which WM-PVS is a marker46.