- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06090201
Severe Congenital Hemostatic Defects, Cerebral MIcrobleeds and COGnition (HEMICOG)
Cerebral Microbleeds in Severe Congenital Hemostatic Defects: Prevalence and Impact on Cognition
Cerebral microbleeds (CMBs) are haemosiderin deposits, resulting from the leakage of erythrocytes from small cerebral vessels, which can be detected noninvasively using susceptibility-sensitive magnetic resonance imaging (MRI) techniques. CMBs are commonly observed in daily practice: their prevalence range from five percent in healthy individuals over 65 years old to 50% in patients with a history of stroke. CMBs are associated with intracerebral hemorrhage (ICH) and also cognitive impairment and dementia.
The pathophysiology of CMBs is thought to primarily involve damage to brain microvasculature but the exact underlying cascade of events, including a potential role for haemostasis, has yet to be elucidated. Haemostatic defects (congenital or acquired) may contribute to an increased number and importance of CMBs. Congenital bleeding disorders such as haemophilia or von Willebrand disease (vWD), populations at high risk of ICH, are unique conditions that may give us further insights into a potential role of haemostatic defects in the pathophysiology of CMBs. CMBs might be the missing link between severe haemostatic defects, ICH risk and cognitive function.
We hypothesized that severe congenital haemostatic defects could contribute to an increased prevalence and number of CMBs, with an impact on cognition in adulthood.
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Estimated)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Male or female, older than 18 years old, no upper age limit
Adult patients with a severe congenital haemostatic defect
- Severe or moderate congenital haemophilia A (or B) defined as <5 IU/dL (<5%) endogenous FVIII (FIX) activity at screening
- Severe von Willebrand disease defined as VWF: Act ≤15IU/dL (<15%) at screening
- Ability of the participant to provide signed and dated informed consent
Exclusion Criteria:
- Contraindication for brain MRI
- HIV infection to avoid a bias towards severe multifactorial neurological complications
- Other known coagulation disorder(s) in addition to haemophilia or von Willebrand disease
- Lack of informed consent
Study Plan
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The rate of patients with at least one CMB on 3-Tesla brain MRI (using specific sequences dedicated to the detection of CMBs).
Time Frame: Within 3 Months after inclusion
|
Within 3 Months after inclusion
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number and anatomical location (deep/lobar) of CMBs on 3-Tesla brain MRI
Time Frame: Within 3 Months after inclusion
|
Within 3 Months after inclusion
|
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- MoCA
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
Memory: The free and cued selective reminding test (FCSRT, French version) ; The Wechsler digit span task will be used to examine verbal short term and working memory.
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Processing speed and attention: digit symbol coding subtest of WAIS 4; the Continuous Performance Test (third edition, CPT3).
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Executive function: The categorical and literal fluency test and the Trail-Making Test (TMT).
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Social cognition: MINI-SEA)
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Depression: CES-D
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Anxiety: HAM-A
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Fatigue: The Chalder Fatigue Scale
|
Within 3 Months after inclusion
|
Multi-domain cognitive performances assessed by standardized scales as follows
Time Frame: Within 3 Months after inclusion
|
- Sleepiness and the impact of sleep disorders: The Epworth Sleepiness Scale
|
Within 3 Months after inclusion
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2022_0601
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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