NEFL and dementia: CSF NfL levels were significantly associated with CSF PDGFRβ levels in the whole cohort (β = 0.127 [CI95% 0.038–0.217], P = 0.0060, Fig. 3m) and in the dementia group (β = 0.164 [CI95% 0.051–0.276], P = 0.0050, Fig. 3p).