- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04412187
Inflammatory faCtors AfteR acUte Ischemic Stroke (ICARUS)
ICARUS is an interventional single-centre hospital-based cohort study in patients admitted to the stroke unit with an acute ischemic stroke. The aims of the study are to i) define the characteristics and determinants of microglial activation after human stroke, and ii) assess the correlation of microglial activation with circulating inflammatory markers, structural brain changes on neuroimaging, and neurological outcomes.
ICARUS involves serial TSPO-PET imaging along with serial MRI, immune cell profiling in blood, and both clinical and laboratory assessments in 36 patients with acute ischemic stroke caused by a cortical (N=18) or strictly subcortical (N=18) infarct.
In a substudy, the investigators will include 10 independently recruited patients with acute ischemic stroke to assess MRI arterial spin labelling (ASL) sequences as a marker for perfusion measurement of the TSPO tracer.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The neuroinflammatory response after ischemic brain injury has been identified as a pathomechanism in ischemic stroke. Stroke induces an activation of microglia in the brain, which lasts over months. However, the characteristics and mechanisms of this microglia activation are insufficiently defined.
Our study hypotheses are (i) that a subpopulation of patients with acute stroke develop prominent microglial activation, and (ii) that patients with extensive microglial activation are more likely to experience poor outcome.
Against this background, the investigators set up the "Inflammatory faCtors AfteR acUte ischemic Stroke (ICARUS)" study as an interventional single-centre hospital-based cohort study. N=36 patients with a cortical (N=18) or strictly subcortical (N=18) acute ischemic stroke will be recruited through the local stroke unit (Department of Neurology, LMU Munich). Study participation involves serial TSPO-PET imaging along with serial MR imaging, immune cell profiling in blood, and both clinical and laboratory assessments. Follow-up assessments at 3 weeks, 3 months, 6 months and 12 months will be conducted at the Institute for Stroke and Dementia Research (ISD) and at the Department of Nuclear medicine, both LMU Munich.
In a substudy, the investigators will include 10 independently recruited patients with acute ischemic stroke to assess MRI arterial spin labelling (ASL) sequences as a marker for perfusion measurement of the TSPO tracer. These patients will receive dynamic PET in addition to the ASL sequences.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Martin Dichgans, Prof.
- Phone Number: 46019 +49 4400
- Email: martin.dichgans@med.uni-muenchen.de
Study Contact Backup
- Name: Anna Kopczak, MD
- Phone Number: 46125 +49 4400
- Email: anna.kopczak@med.uni-muenchen.de
Study Locations
-
-
-
Munich, Germany, 81377
- Recruiting
- Insitute for Stroke and Dementia Research
-
Contact:
- Martin Dichgans, Prof.
- Phone Number: 46019 +49 89 4400
-
Contact:
- Anna Kopczak, MD
- Phone Number: 46125 +49 89 4400
-
Munich, Germany, 81377
- Recruiting
- Department of Nuclear Medicine
-
Contact:
- Peter Bartenstein, Prof.
- Phone Number: 77646 +49 89 4400
- Email: peter.bartenstein@med.uni-muenchen.de
-
Contact:
- Matthias Brendel, MD
- Phone Number: 74646 +49 89 4400
- Email: matthias.brendel@med.uni-muenchen.de
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Age ≥ 50 years
- Acute ischemic stroke (time frame: <72 hours) as defined by an acute focal neurological deficit in combination with a corresponding infarct as documented by a diffusion weighted imaging (DWI)-positive lesion on magnetic resonance imaging (MRI); presence of an infarct involving the cortex or a strictly subcortical infarct
- Written informed consent prior to study participation
- Willingness to participate in study assessments including follow-up
Exclusion Criteria:
- Unwillingness or inability to give written consent
- Prior history of stroke, multiple infarcts, infratentorial infarcts affecting the brain stem or cerebellum
- Known diseases of the CNS other than stroke
- Immunomodulatory therapies within the last 3 months prior stroke
- Chronic inflammatory disease
- Infectious diseases within the last 7 days prior stroke
- Conditions interfering with follow-up such as end-stage malignancy
- Contraindications for MRI or PET (pacemaker, aneurysm clip, cochlear implant etc.)
- Radiation exposure of > 10mSv per year
- Pregnant or breastfeeding women
- Participation in a clinical trial
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: TSPO PET imaging
All study participants will receive [18F]-GE-180, i.e.
TSPO PET imaging to assess microglia activation.
|
serial [18F]-GE-180 PET imaging to assess microglia activation
Other Names:
serial MR imaging (i) to determine infarct characteristics, (ii) to identify gray and white matter structures connected to the infarct, (iii) to detect incident lesions, and (iv) to quantify longitudinal changes e.g. of cortical thickness
Cell-specific cytokine profiles, markers of activation, terminal differentiation as well as cytotoxicity will be assesses using flow cytometry.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
microglia activation in patients with acute stroke
Time Frame: within 10 days after acute ischemic stroke
|
Microglia activation will be assessed using TSPO PET imgaing.
|
within 10 days after acute ischemic stroke
|
microglia activation in patients with acute stroke
Time Frame: 3 months after acute ischemic stroke
|
Microglia activation will be assessed using TSPO PET imgaing.
|
3 months after acute ischemic stroke
|
functional outcome in patients after acute ischemic stroke
Time Frame: 3 weeks after acute ischemic stroke
|
Functional outcome measured by the modified Rankin Score (mRS) will be assessed and related to microglial activation.
|
3 weeks after acute ischemic stroke
|
functional outcome in patients after acute ischemic stroke
Time Frame: 3 months after acute ischemic stroke
|
Functional outcome measured by the modified Rankin Score (mRS) will be assessed and related to microglial activation.
|
3 months after acute ischemic stroke
|
functional outcome in patients after acute ischemic stroke
Time Frame: 6 months after acute ischemic stroke
|
Functional outcome measured by the modified Rankin Score (mRS) will be assessed and related to microglial activation.
|
6 months after acute ischemic stroke
|
functional outcome in patients after acute ischemic stroke
Time Frame: 12 months after acute ischemic stroke
|
Functional outcome measured by the modified Rankin Score (mRS) will be assessed and related to microglial activation.
|
12 months after acute ischemic stroke
|
cognitive outcome in patients after acute ischemic stroke
Time Frame: 3 weeks after acute ischemic stroke
|
Functional outcome in terms of cognition will be assessed by the Montreal Cognitive Assessment (MoCA) and related to microglial activation.
|
3 weeks after acute ischemic stroke
|
cognitive outcome in patients after acute ischemic stroke
Time Frame: 3 months after acute ischemic stroke
|
Functional outcome in terms of cognition will be assessed by the Montreal Cognitive Assessment (MoCA) and related to microglial activation.
|
3 months after acute ischemic stroke
|
cognitive outcome in patients after acute ischemic stroke
Time Frame: 6 months after acute ischemic stroke
|
Functional outcome in terms of cognition will be assessed by the Montreal Cognitive Assessment (MoCA) and related to microglial activation.
|
6 months after acute ischemic stroke
|
cognitive outcome in patients after acute ischemic stroke
Time Frame: 12 months after acute ischemic stroke
|
Functional outcome in terms of cognition will be assessed by the Montreal Cognitive Assessment (MoCA) and related to microglial activation.
|
12 months after acute ischemic stroke
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
inflammatory markers in blood
Time Frame: 3 weeks after acute ischemic stroke
|
Inflammatory markers in blood will be assessed by flow cytometry and related to microglial activation.
|
3 weeks after acute ischemic stroke
|
inflammatory markers in blood
Time Frame: 3 months after acute ischemic stroke
|
Inflammatory markers in blood will be assessed by flow cytometry and related to microglial activation.
|
3 months after acute ischemic stroke
|
Duplex ultrasound
Time Frame: 6 months after acute ischemic stroke
|
Duplex ultrasound will be performed to assess potential progress of atherosclerosis related to inflammatory markers
|
6 months after acute ischemic stroke
|
3T MR imaging
Time Frame: 3 months after acute ischemic stroke
|
3T MRI will be performed to relate infarct evolution, secondary neurodegeneration, and stroke outcome to microglial activation.
|
3 months after acute ischemic stroke
|
3T MR imaging
Time Frame: 12 months after acute ischemic stroke
|
3T MRI will be performed to relate infarct evolution, secondary neurodegeneration, and stroke outcome to microglial activation.
|
12 months after acute ischemic stroke
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Martin Dichgans, Prof., LMU Munich
- Principal Investigator: Peter Bartenstein, Prof., LMU Munich
- Principal Investigator: Sibylle Ziegler, Prof., LMU Munich
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 (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 19-428
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.
Clinical Trials on Ischemic Stroke
-
Nordsjaellands HospitalRigshospitalet, Denmark; Metropolitan University CollegeCompletedTransient Ischemic Attack | Stroke, Ischemic | Stroke HemorrhagicDenmark
-
University of CalgaryThe George Institute for Global Health, AustraliaNot yet recruitingAcute Ischemic Stroke AIS | Stroke, Acute, Stroke Ischemic | Stroke AcuteCanada, Australia
-
Second Affiliated Hospital, School of Medicine,...Shanghai Zhongshan Hospital; First Affiliated Hospital of Wenzhou Medical University and other collaboratorsRecruitingAcute Ischemic Stroke and Transient Ischemic AttacksChina
-
Medtronic Cardiac Rhythm and Heart FailureMedtronic Bakken Research CenterCompletedCryptogenic Symptomatic Transient Ischemic Attack | Cryptogenic Ischemic StrokeNetherlands, United States, France, Belgium, Germany, Sweden, Italy, Austria, Canada, Denmark, Finland, Greece, Slovakia, Spain
-
University Hospital, BrestCompletedStroke, Ischemic | Stroke HemorrhagicFrance
-
Umbria Bioengineering TechnologiesRecruitingStroke, Ischemic | Stroke HemorrhagicItaly
-
Sheffield Teaching Hospitals NHS Foundation TrustUnknownFatigue | Stroke, Ischemic | Stroke HemorrhagicUnited Kingdom
-
BayerRecruitingAcute Non-cardioembolic Ischemic Stroke | Prevention of Ischemic Stroke | High-risk Transient Ischemic AttackUnited States, Switzerland, Belgium, Australia, Sweden, Canada, Taiwan, Spain, Korea, Republic of, Latvia, Israel, Malaysia, China, Greece, Japan, Turkey, Netherlands, Romania, United Kingdom, Portugal, Hungary, Italy, Brazil, France, S... and more
-
University of AlbertaCompletedTransient Ischemic Attack | Minor Ischemic StrokeCanada
-
Ischemia Care LLCCompletedIschemic Stroke | Atrial Fibrillation | Thrombotic Stroke | Transient Ischemic Attacks | Cardioembolic Stroke | Stroke of Basilar Artery | Transient Cerebrovascular EventsUnited States
Clinical Trials on [18F]-GE-180 PET
-
Massachusetts General HospitalCedars-Sinai Medical Center; ALS Association; The Methodist Hospital Research...CompletedAmyotrophic Lateral Sclerosis (ALS)United States
-
Istituto Clinico HumanitasMediolanum Cardio ResearchNot yet recruiting
-
Mayo ClinicBlue Earth Diagnostics, IncRecruitingMetastatic Intracranial Malignant Neoplasm | Recurrent Intracranial NeoplasmUnited States
-
GlaxoSmithKlineCambridge University Hospitals NHS Foundation TrustTerminatedArthritis, RheumatoidUnited Kingdom
-
GE HealthcareNational Cancer Institute (NCI)Terminated
-
M.D. Anderson Cancer CenterNational Cancer Institute (NCI)TerminatedMetastatic Prostate Carcinoma | Stage IVB Prostate Cancer AJCC v8United States
-
M.D. Anderson Cancer CenterNational Cancer Institute (NCI)CompletedMetastatic Head and Neck Squamous Cell Carcinoma | Metastatic Squamous Cell Carcinoma in Cervical Lymph NodeUnited States
-
M.D. Anderson Cancer CenterNational Cancer Institute (NCI)Completed
-
Stanford UniversityCompletedLung CancerUnited States
-
Imperial College LondonMedical Research Council; University of CambridgeRecruiting