Abstract
Lymphocyte activation gene-3 (LAG-3) could mediate pathological α-synuclein transmission in neurodegeneration and may be involved in the pathogenesis of Parkinson's disease (PD). The aim of the present study was to explore soluble LAG-3 (sLAG-3) as a potential diagnostic biomarker for PD. Serum sLAG-3 concentrations were measured by a quantitative ELISA for patients with PD, essential tremor (ET) and age- and sex-matched controls. The relationships between sLAG-3 and clinical phenotype were assessed via correlation analysis and logistic regression. Serum sLAG-3 levels in patients with PD were significantly higher than those in ET patients and age- and sex-matched controls. The area under the curve of serum sLAG-3 in differentiating PD from age- and sex-matched controls was 0.82. Serum sLAG-3 was associated with non-motor symptoms and excessive daytime sleep. sLAG-3 is a candidate novel biomarker for PD. © 2018 International Parkinson and Movement Disorder Society.
Published Version
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