- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06122415
The Swedish BioFINDER - Memory Clinic Study (Validate)
The diagnosis of diseases causing memory difficulties or dementia is often challenging. Without the use of advanced methods such as cerebrospinal fluid tests, approximately 25-30% do not receive a correct diagnosis today. However, we have recently developed new blood biomarkers with high diagnostic accuracy, and we now want to investigate whether they can eventually replace cerebrospinal fluid tests. This is because blood tests are much more cost-effective and significantly easier for patients compared to cerebrospinal fluid tests.
In this study, 1200 patients undergoing clinical evaluations at the Memory Clinic, Skåne University Hospital in Malmö, are included for blood and cerebrospinal fluid sample collection. The blood samples are sent for analysis using the new blood biomarkers. Subsequently, the results are compared with those from the clinical analysis of cerebrospinal fluid to determine how well they perform in routine clinical practice as an alternative to cerebrospinal fluid tests and whether the blood test improves patient care. This comparison is carried out by the attending physician in three steps:
- Assessment without access to the results of either the blood test or cerebrospinal fluid test.
- Assessment with access to only the results of the blood test.
- Assessment with access to the results of both the blood test and cerebrospinal fluid test.
Aim 1) To prospectively validate plasma AD biomarkers for diagnosis of patients with cognitive symptoms who are evaluated in a specialist memory clinic.
Aim 2) Determine whether blood AD biomarkers improve patient management in specialist memory clinic settings.
Study Overview
Status
Conditions
Detailed Description
The diagnosis of diseases causing memory difficulties or dementia is often challenging. Without the use of advanced methods such as cerebrospinal fluid tests, approximately 25-30% do not receive a correct diagnosis today. However, we have recently developed new blood biomarkers with high diagnostic accuracy, and we now want to investigate whether they can eventually replace cerebrospinal fluid tests. This is because blood tests are much more cost-effective and significantly easier for patients compared to cerebrospinal fluid tests.
In this study, 1200 patients undergoing clinical evaluations at the Memory Clinic, Skåne University Hospital in Malmö, are included for blood and cerebrospinal fluid sample collection. The blood samples are sent for analysis using the new blood biomarkers. Subsequently, the results are compared with those from the clinical analysis of cerebrospinal fluid to determine how well they perform in routine clinical practice as an alternative to cerebrospinal fluid tests and whether the blood test improves patient care. This comparison is carried out by the attending physician in three steps:
- Assessment without access to the results of either the blood test or cerebrospinal fluid test.
- Assessment with access to only the results of the blood test.
- Assessment with access to the results of both the blood test and cerebrospinal fluid test.
Aim 1) To prospectively validate plasma AD biomarkers for diagnosis of patients with cognitive symptoms who are evaluated in a specialist memory clinic. We here intend to study the clinical robustness and accuracy of plasma AD biomarkers in real-world settings by using high-performing plasma assays over 2-3 years, focusing on a specialist memory clinic population (n=1200). In this study plasma samples are collected as part of clinical praxis and analyzed on a bi-weekly basis throughout the study period (and not in single batches/at study closure). We will (1) use pre-defined cut offs for each biomarker (similar to real world clinical practice), and (2) use an accurate reference standard (i.e., presence of AD brain pathology as determined with CSF Aβ42/Aβ40 [Lumipulse; Fujirebio] and CSF P-tau217 [Eli Lilly]). We will strive to recruit diverse and representative populations of patients with subjective cognitive decline (SCD), mild cognitive impairment (MCI) and mild dementia. The effects of potential confounders (such as kidney function) on diagnostic accuracy will also be studied. We will only use really top-performing plasma assays for each biomarker, including p-tau217 and Ab42/Ab40.
Expected outcomes: We will 1) determine the diagnostic accuracy of different plasma AD biomarkers, 2) establish an optimal combination of plasma biomarkers for detection of AD brain pathology and 3) identify the effects of different potential confounding factors (e.g., kidney function) on the performance of different plasma biomarkers, when used prospectively in both real-world specialist and primary care populations.
Aim 2) Determine whether blood AD biomarkers improve patient management in specialist memory clinic settings. As often noted by regulatory authorities, it is important to know if novel diagnostic methods improve the actual management of patients in real world settings. Consequently, we study whether the most promising plasma biomarkers for symptomatic AD (including plasma p-tau217) will improve AD diagnosis beyond what is currently done as part of clinical practice. The dementia experts will document the most likely diagnosis (and the certainty of the diagnosis) after having performed an interview with the patient and informant, as well as evaluated the patient's cognitive test results, routine blood tests and structural brain imaging. The physician will then re-evaluate the diagnosis (and certainty of diagnosis) after having obtained the plasma p-tau217 results, and the pre- and posttest diagnosis will be compared to the reference standard (i.e., presence of AD brain pathology as determined with CSF Aβ42/Aβ40 [Lumipulse; Fujirebio] and CSF P-tau217 [Eli Lilly]). Change in treatment and care of the patient after evaluating the p-tau217 results will also be recorded similar to how amyloid-PET was evaluated in the IDEAS study.
Expected outcomes: We will determine whether the addition of plasma AD biomarkers to current clinical practice in memory clinics and/or primary care improves diagnosis and management of patients with SCD, MCI or mild dementia.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: Oskar Hansson, MD, PhD
- Phone Number: +46-40-331000
- Email: oskar.hansson@med.lu.se
Study Contact Backup
- Name: Erik Stomrud, MD, PhD
- Phone Number: +46-40-331000
- Email: erik.stomrud@med.lu.se
Study Locations
-
-
-
Malmö, Sweden
- Recruiting
- Skåne University Hospital
-
Contact:
- Erik Stomrud, MD, PhD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Under investigation for cognitive symptoms at the Memory clinic.
- Cerebrospinal fluid and blood sampling is planned to be done as part of clinical practice even if the patient is not taking part of this study.
Exclusion Criteria:
- Not undergoing CSF or blood sampling as part of clinical practice.
- Not undergoing cognitive testing as part of clinical practice.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Patients in secondary care with cognitive symptoms
|
APS 2 score (combination of ptau217/nptau217 and Ab42/Ab40).
The cut off will be predefined.
The samples will be analysed prospectively every two weeks.
The cut off will be predefined.
The samples will be analysed prospectively every two weeks.
The cut off will be predefined.
The samples will be analysed prospectively every two weeks.
The cut off will be predefined.
The samples will be analysed prospectively every two weeks.
The cut off will be predefined.
The samples will be analysed prospectively every two weeks.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Brain AD pathology as determined by CSF AD biomarkers
Time Frame: At baseline (cross-sectional)
|
CSF Ab42/Ab40 and p-tau217
|
At baseline (cross-sectional)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Clinical diagnosis supported by CSF biomarkers
Time Frame: At baseline (cross-sectional)
|
Clinical diagnosis based on DSM-5 but supported by CSF biomarkers
|
At baseline (cross-sectional)
|
Brain AD pathology as determined by tau PET imaging
Time Frame: At baseline (cross-sectional)
|
Tau PET imaging
|
At baseline (cross-sectional)
|
Change in patient management
Time Frame: At baseline (cross-sectional)
|
Change in suggested diagnosis, treatment, referral or ordered diagnostic tests
|
At baseline (cross-sectional)
|
Change in diagnostic confidence
Time Frame: At baseline (cross-sectional)
|
Change in diagnostic confidence of the treating physician
|
At baseline (cross-sectional)
|
Brain AD pathology as determined by amyloid amyloid PET imaging
Time Frame: At baseline (cross-sectional)
|
Amyloid PET imaging
|
At baseline (cross-sectional)
|
Progression to AD dementia in patients with SCD or MCI at baseline
Time Frame: At baseline (cross-sectional)
|
Development of AD dementia during follow-up diagnosed using DSM-5 and supported by CSF biomarkers
|
At baseline (cross-sectional)
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimated)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Mental Disorders
- Cardiovascular Diseases
- Vascular Diseases
- Cerebrovascular Disorders
- Brain Diseases
- Central Nervous System Diseases
- Nervous System Diseases
- Arteriosclerosis
- Arterial Occlusive Diseases
- Neurocognitive Disorders
- Parkinsonian Disorders
- Basal Ganglia Diseases
- Movement Disorders
- Synucleinopathies
- Neurodegenerative Diseases
- Tauopathies
- Cognition Disorders
- Intracranial Arterial Diseases
- Intracranial Arteriosclerosis
- Leukoencephalopathies
- Dementia
- Alzheimer Disease
- Cognitive Dysfunction
- Lewy Body Disease
- Dementia, Vascular
Other Study ID Numbers
- VALIDATE
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Sharing Time Frame
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- ICF
- ANALYTIC_CODE
- CSR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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