The Signature of Alzheimer's Disease in Subjective Cognitive Decline

Brief summary (registry, in English)

This study focuses on improving early detection of Alzheimer's disease (AD) in patients with subjective cognitive decline (SCD), a preclinical stage of cognitive impairment, in the context of emerging disease-modifying therapies (DMTs). Current biomarkers, such as brain MRI, PET scans, and cerebrospinal fluid (CSF) markers, are highly accurate but costly, invasive, and not widely accessible. The study aims to provide cost-effective, scalable tools for early identification of individuals at risk, enabling personalized assessment and timely DMT administration. Objectives: * Evaluate the accuracy of innovative, easily accessible biomarkers in predicting biologically confirmed AD. * Assess the predictive utility of previously studied methods for SCD patients. * Explore new approaches, including automated speech analysis, to identify cognitive decline. * Evaluate genetic contributions to AD risk. * Integrate data from these various modalities using machine learning to create a predictive model for AD in SCD patients. Study Design: This is a multicenter, longitudinal, low-intervention study conducted at IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy (UO1) and the Center for Research and Innovation in Dementia, Careggi Hospital, Florence, Italy (UO2). Eligible participants are adults with SCD, intact daily functioning, and Mini-Mental State Examination (MMSE) scores \>24. Exclusion criteria include neurological or systemic diseases, major psychiatric disorders, substance use, or prior head injury. Participants undergo: * Detailed medical and family history collection. * Comprehensive neuropsychological, personality, and independence in daily activities assessment * EEG recording in resting state. * Blood sampling for plasma biomarkers (Aβ42, Aβ40, p-tau181, p-tau217, t-tau, NfL, GFAP). * CSF biomarker analysis (Aβ42, Aβ40, p-tau, t-tau). * Genetic analysis of AD-related genes (PSEN1, PSEN2, APOE, TREM2, ABCA7, BDNF, HTT). * Speech recording and analysis using standardized tasks to extract features for automated evaluation. The study expects to create a machine learning-based predictive model combining biomarker, neuropsychological, EEG, speech, and genetic data to improve early detection and guide personalized patient care. Procedures: * Neuropsychological evaluations occur at baseline and two-year follow-up. * Language recordings are conducted in controlled settings using standardized picture description tasks. * EEG is recorded using 21-channel systems. * Blood and CSF samples are collected, processed, and stored at -80°C for subsequent analysis at respective institutional laboratories. * Plasma biomarkers are analyzed with Simoa technology; CSF biomarkers are analyzed using chemiluminescent enzyme immunoassay (CLEIA). * Genetic analyses employ PCR, high-resolution melting analysis (HRMA), sequencing, and capillary electrophoresis as appropriate for specific genes or polymorphisms. The study expects to create a machine learning-based predictive model combining biomarker, neuropsychological, EEG, speech, and genetic data to improve early detection and guide personalized patient care.

What you commit to

• Study type: Observational
• Planned participants: 250
• From 1 Oct 2025 to the primary completion date, 1 Oct 2027
• 1 site in 1 country
• Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

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 · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.