The Role of the Coagulation Pathway at the Synapse in Prion Diseases
1 other identifier
observational
50
0 countries
N/A
Brief Summary
The study hypothesis is that that the deleterious effect of prions on the brain may be mediated (at least partially) by activation of serine proteases involved in the coagulation system. If this is true, then measurement of the activity of the coagulation system may be a marker of disease onset (in at higher risk individuals such as E200K\* carriers) and for disease progression or activity in affected individuals. In addition, modulation of the coagulation system activity may be a potential tool for therapeutic intervention. \*E200K- E200K mutation (Glu to Lys substitution) in the prion protein gene
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for all trials
Started Jun 2015
Longer than P75 for all trials
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2015
CompletedFirst Submitted
Initial submission to the registry
June 22, 2015
CompletedFirst Posted
Study publicly available on registry
June 24, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 1, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
July 1, 2025
CompletedJune 24, 2015
June 1, 2015
9.1 years
June 22, 2015
June 23, 2015
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Thrombin activity assay
10 years
Study Arms (3)
CJD (Creutzfeldt-Jakob disease) patients
Prior to inclusion in the study a senior neurologist will interview the patient and will verify that he fully understands the objectives of the study and he is mentally qualified to sign the informed consent form (severely demented patients who will not be able to adequately consider the participation in the study will be excluded). Cognitive performance will be evaluated using the Mini-mental Status Examination and Frontal Assessment Battery scales. No clinical data other than the cognitive assessment and those needed for the clinical work up will be especially collected for this study. We plan to collect CSF samples for thrombin activity assay.
non-CJD patients with a type of dementia
Prior to inclusion in the study a senior neurologist will interview the patient and will verify that he fully understands the objectives of the study and he is mentally qualified to sign the informed consent form (severely demented patients who will not be able to adequately consider the participation in the study will be excluded). Cognitive performance will be evaluated using the Mini-mental Status Examination and Frontal Assessment Battery scales. No clinical data other than the cognitive assessment and those needed for the clinical work up will be especially collected for this study. We plan to collect CSF samples for thrombin activity assay.
CSF samples of non-CJD patient used as control
CSF samples : Thrombin activity will be assayed.
Interventions
collecting CSF samples for thrombin activity assay
Eligibility Criteria
CJD and non-CJD patients
You may qualify if:
- Patient undergoing lumbar puncture test as part of the investigation of cognitive decline.
You may not qualify if:
- Patients on anticoagulation or those who have contraindication for undergoing lumbar puncture.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Publications (29)
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PMID: 21218340BACKGROUNDChapman J. Coagulation in inflammatory diseases of the central nervous system. Semin Thromb Hemost. 2013 Nov;39(8):876-80. doi: 10.1055/s-0033-1357482. Epub 2013 Oct 9.
PMID: 24108468BACKGROUNDMaggio N, Shavit E, Chapman J, Segal M. Thrombin induces long-term potentiation of reactivity to afferent stimulation and facilitates epileptic seizures in rat hippocampal slices: toward understanding the functional consequences of cerebrovascular insults. J Neurosci. 2008 Jan 16;28(3):732-6. doi: 10.1523/JNEUROSCI.3665-07.2008.
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PMID: 25134744BACKGROUND
Biospecimen
CSF samples
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Oren Cohen, Dr. (MD)
Cheba Medical Center
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER GOV
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- MD
Study Record Dates
First Submitted
June 22, 2015
First Posted
June 24, 2015
Study Start
June 1, 2015
Primary Completion
July 1, 2024
Study Completion
July 1, 2025
Last Updated
June 24, 2015
Record last verified: 2015-06