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Retrospective Observational Study of Blood-based Biomarkers in the Diagnosis and Monitoring of Patients With a Neurodegenerative Disease or Mental Disorder

Synapsing Retrospective Biomarker Study

Status
Enrolling by invitation
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07314190
Acronym
Synapsing-BK
Enrollment
1799
Registered
2026-01-02
Start date
2026-02-19
Completion date
2029-12-31
Last updated
2026-02-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Alzheimer Disease, Bipolar 1 Disorder, Dementia With Lewy Bodies (DLB), Frontotemporal Dementia (FTD), Major Depressive Disorder (MDD), Parkinson Disease, Schizophenia Disorder

Keywords

Companion diagnostic biomarker, Synapse biomarker, magnetic resonance imaging, plasma, blood, serum

Brief summary

This is a retrospective observational study to evaluate the clinical utility of blood-based biomarkers in the diagnosis and management of patients with a neurodegenerative disease (ND) or mental disorder (MD).

Detailed description

This study will collect clinical and biomarker data from patients and controls to identify a) a blood-based diagnostic biomarker for mental disorders, and b) a blood-based biomarker that could be used as a surrogate end-point for the principal neuropsychiatric symptoms. Specific research questions are: Can blood-based biomarkers provide a faster more objective diagnosis for major depressive disorder, bipolar disorders or schizophrenia? Can the same biomarkers also aid in the differential diagnosis from neurodegenerative diseases? Do blood-based synaptic biomarkers correlate with structural and functional brain changes, cognitive performance and psychiatric symptoms in patients with major depressive disorder, bipolar disorders, schizophrenia, Alzheimer's disease, dementia with Lewy bodies, frontotemporal dementia or Parkinson's disease? Can the blood-based synaptic biomarkers predict therapeutic response in patients with major depressive disorder, bipolar disorders or schizophrenia?

Interventions

None listed

Sponsors

Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
Lead SponsorOTHER
University of Ulm
CollaboratorOTHER
University Of Perugia
CollaboratorOTHER
University of Eastern Finland
CollaboratorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Age\>18 and donation of blood, * full clinical and psychological assessment * Available neuroimaging is optional as not all patients are suitable. * Age and sex-matched unaffected volunteers without a MD or ND diagnosis are used as controls. * Unaffected controls are usually spouses or children of patients that are informed about our studies at each clinical site.

Exclusion criteria

* Lack of neuropsychological data, * anticoagulant treatment such as acenocoumarol, heparin, warfarin, dabigatran, rivaroxaban, apixaban, drug abuse in the last year, * medical history of cancer affecting the central nervous system that has not been in complete remission for 5 years or longer, * the patient has received potentially neurotoxic chemotherapy and/or patient has received cranial radiotherapy. * Clinical diagnosis of Alzheimer's disease where pathophysiological markers (measured in CSF or plasma) are inconsistent with Alzheimer's disease pathophysiology. * Cognitively healthy volunteers where pathophysiological markers (measured in CSF or plasma) are consistent with Alzheimer's disease or other neurodegenerative pathophysiology.

Design outcomes

Primary

MeasureTime frameDescription
Concentration of biomarkers in bloodthrough study completion, an average of 1 yearConcentration of biomarker (eg., NPTX2) in blood measured by immunoassay or mass spectrometry-based techniques.
DiagnosisBaselinePrimary diagnosis following evaluation by clinician and neuropsychologist
Boston Naming TestUp to 3-monthsTotal score on the Boston Naming Test. Range 0-60. Higher scores represent better outcomes.

Secondary

MeasureTime frameDescription
Structural brain changesUp to 3-monthsAcquisition of 3T-MRI with a high-resolution 3D T1-weighted anatomical image, a multi-shell diffusion-weighted MRI, and a resting-state functional sequence.

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026