SynthesisInternational journal of molecular sciences2026
Plasma Neurofilament Light Chain as a Complementary Biomarker for Alzheimer's Disease and Mild Cognitive Impairment: A Systematic Review and Meta-Analysis.
Synthesis in International journal of molecular sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by cognitive decline and memory loss, ultimately leading to a loss of independence and reduced quality of life. As current treatments are most effective in the early stages, reliable blood-based biomarkers are required for early diagnosis, therapeutic monitoring, and disease staging. Plasma neurofilament light chain (NfL), a marker of neuroaxonal injury, is a candidate biomarker; its value relative to established amyloid- and tau-based biomarkers is unclear. A systematic review and meta-analysis comparing plasma NfL with Aβ42, Aβ40, the Aβ42/Aβ40 ratio, and p-tau217 across cognitively normal (control, Con), mild cognitive impairment (MCI), and AD groups was conducted. Fourteen studies that met specific criteria were included. Plasma NfL and p-tau217 increased across disease stages. Aβ42 and Aβ42/Aβ40 were lower in AD/MCI than in Con; Aβ40 was similar across groups. Heterogeneity (I
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