Fig. 3From: Serum NFL discriminates Parkinson disease from essential tremor and reflect motor and cognition severitySerum NFL was associated with motor and cognition severity in PD. Correlation analysis showed that (A) serum NFL levels were significantly positively correlated with UPDRS III scores (p < 0.001), (B) serum NFL levels were markedly negatively correlated with MMSE scores (p < 0.001). MMSE = Mini-Mental State Examination; NFL = neurofilament light chain; PD = Parkinson disease; UPDRS III = Unified Parkinson’s Disease Rating Scale part IIIBack to article page