LONgitudinal and Integrated Evaluation of Biomarkers in reLation to phenotYpe in ALS

Brief summary (registry, in English)

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by progressive degeneration of upper and lower motor neurons, leading to paralysis and death. Despite its uniformly fatal outcome, ALS shows marked clinical heterogeneity with respect to phenotype, progression rate, cognitive involvement, and survival. This heterogeneity limits prognostic accuracy and complicates patient stratification in both clinical practice and research settings. Neurochemical biomarkers have emerged as promising tools to improve diagnosis, prognostication, and understanding of ALS pathophysiology. Among them, neurofilament light chain (NfL) represents the most established biomarker, reflecting axonal degeneration. Additional biomarkers, including glial fibrillary acidic protein (GFAP), phosphorylated tau (p-tau181), and Alzheimer's disease-related markers (Aβ42 and Aβ40), may provide complementary information regarding astroglial activation, motor neuron subtype involvement, and cognitive-behavioral features. However, the phenotypic correlates, longitudinal trajectories, and biological determinants of these biomarkers in ALS are not yet fully understood. The LONELYALS study is an ongoing, monocentric, observational cohort study with a case-control component, designed to investigate the relationships between ALS phenotype and a comprehensive panel of cerebrospinal fluid (CSF) and blood biomarkers. The study will enroll 140 adult patients with ALS and collect longitudinal clinical, neuropsychological, biological, and laboratory data over a follow-up period of up to 36 months. By integrating biomarker measurements with detailed phenotypic characterization, the study aims to clarify biomarker origins, determinants, and prognostic value, and to identify novel CSF biomarkers relevant to ALS.

What you commit to

• Study type: Interventional
• Planned participants: 140
• From 17 Apr 2025 to the primary completion date, 15 Dec 2027
• 1 site in 1 country
• Visits and tests: ask the trial team, the registry does not list them

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Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Who the study is looking for

Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

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