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Longitudinal Early-onset Alzheimer*s Disease Study (LEADS)

Longitudinal Early-onset Alzheimer*s Disease Study (LEADS) - LEADS

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
NL-OMON
Registry ID
NL-OMON57789
Enrollment
15
Registered
2024-10-03
Start date
2025-11-02
Completion date
Unknown
Last updated
2025-10-13

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

Conditions

Early onset Alzheimer's Disease

Interventions

PET, MR, neuropsychology, CSF, blood, DNA

Sponsors

Indiana University
Lead Sponsor

Eligibility

Age
18 Years to 64 Years

Inclusion criteria

Inclusion criteria: 1. Meets NIA-AA criteria for MCI due to AD or probable AD dementia 2. Have a global CDR score

Exclusion criteria

Exclusion criteria: 1. Meets core clinical criteria for non-AD dementia 2. Two or more first degree relatives with a history of early-onset dementia  suggestive of autosomal dominant transmission, unless known pathogenic  mutations in APP, PSEN1, PSEN2, MAPT, GRN and C9ORF72 have been excluded 3. Known CLIA certified mutation in an ADAD gene (APP, PSEN1, PSEN2), or other  autosomal dominant genes associated with other neurodegenerative disorders  (MAPT, GRN, C9ORF72) 4. Contraindications to 3T MRI (e.g., claustrophobia, pacemaker, select aneurismal  clip, artificial heart valve, select ear implants, select stents incompatible  with 3T MRI, metal fragments or foreign objects in the eyes, skin or body, etc.) 5. Lifetime medical history of a brain disorder other than the disorder causing  dementia except for headache (exceptions are allowed at the discretion of the  Site PI - e.g., seizure disorder thought to be due to EOAD). 6. MRI scan with evidence of infection or focal lesions, cortical strokes,  multiple lacunes (single lacune is allowable unless it meets criteria for  strategic lacune affecting cognition) 7. Any significant systemic illness or unstable medical condition, which could  lead to difficulty complying with the protocol (at the discretion of the Site  PI) 8. Research radiation exposure will be assessed by the study physician. If the  candidate participant has had more than one nuclear medicine study in the prior  12 months for research-related purposes, study inclusion will require approval  from the PET Core 9. Investigational agents are prohibited 30 days prior to entry 10. Previous enrollment in a therapeutic trial targeting amyloid or tau 11. Participation in other clinical studies with neuropsychological measures, with  the exception of participants who are co-enrolled in the NACC Uniform Data Set  (UDS) protocol (Note: This criterion is intended to reduce repeat measures  effects during neuropsychological testing. Exceptions are allowed at the  discretion of the Site PI) 12. Lifetime history of schizophrenia spectrum disorders (DSM-5 criteria) 13. Current history (in previous 12 months) of DSM-5 diagnosis of mania, bipolar  disorder with or without psychotic features 14. Current history (in previous 6 months) of moderate or severe substance abuse  (nicotine or caffeine is allowed) 15. Suicidal behaviors in the past 12 months or active suicidal ideations 16. Residing in a 24-hour care skilled nursing facility (at the time of screening) 17. (For optional lumbar puncture procedure only): a. Clinical laboratory values must be within normal limits or, if abnormal, must  be judged to be not clinically significant by the Site PI i. Platelet count <100,000/ml ii. INR>1.2 iii. Abnormal PT or PTT at screening b. Contraindications to the procedure, including but not limited to severe  degenerative joint disease, deformity of the spine, history of a bleeding  disorder c. Suspected elevated intracranial pressure, Arnold Chiari malformation or mass  lesion d. Use of the anticoagulant medications such as but not limited to warfarin,  rivaroxaban, dabigatran 18. Deemed ineligible by the Site P

Design outcomes

Primary

MeasureTime frame
Rate of decline on cognitive, global, and functional tests; rates of change on imaging and fluid biomarkers; Longitudinal extent and rate of brain atrophy, amyloid and tau deposition; Discovery of new AD genetic risk variants

Secondary

MeasureTime frame
(1) collection of DNA from EOAD participants for exploratory studies applying next generation sequencing; (2) collection and banking of clinical, biofluid and imaging measures for future research and sharing with the larger research community; and (3) establishing a network of EOAD sites that will enable future planning and implementation of clinical trials in EOAD.

Countries

Netherlands

Contacts

Public ContactY.A.L. Pijnenburg

Amsterdam UMC

alzheimercentrum@amsterdamumc.nl020-444 0816

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)