Fig. 2From: Serum NFL discriminates Parkinson disease from essential tremor and reflect motor and cognition severitySerum NFL in PD according to motor and cognition severity. (A) Mean serum NFL level was significantly elevated in patients with PD who displayed severe motor disorder based on the H-Y stage (p < 0.01). (B) Mean serum NFL level was markedly higher in patients with PDD compared to PD-MCI, PD-NC and control. Mean levels are shown with SD; *p < 0.01. H-Y = Hoehn & Yahr; MCI = mild cognitive impairment; NFL = neurofilament light chain; PD = Parkinson disease; PDD = PD with dementia; PD-NC = PD with normal cognitionBack to article page