Fig. 1From: Utility of plasma Neurofilament light as a diagnostic and prognostic biomarker of the postural instability gait disorder motor subtype in early Parkinson’s diseasePlasma NfL in healthy controls and patients with Parkinson’s disease. a At baseline, plasma NfL was significantly increased in PD compared to HC, adjusting for age and sex; b but not between TD and PIGD, adjusting for age, sex and disease duration. c At year 2, plasma NfL was significantly increased in PIGD compared to TD, adjusting for age, sex and disease duration. Abbreviations: BL, Baseline; PD, Parkinson’s Disease; HC, Healthy Control; NfL, Neurofilament light chain protein; TD, Tremor-Dominant; PIGD, Postural Instability Gait Disorder; Y2, Year 2Back to article page