- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06301412
Combination of Hypothermia and Thrombectomy in Acute Stroke (COTTIS-2)
Combination of Targeted Temperature Management and Thrombectomy After Acute Ischemic Stroke (COTTIS-2) - a Randomised Controlled Study
The goal of this clinical trial is to test the combination of hypothermia and endovascular treatment in acute stroke patients with large vessel occlusion.
The main question it aims to answer is: does an additional cooling to 35°C result in a benefit on clinical outcome ? Participants receive immediate cooling using a noninvasive transnasal cooling technique (RhonoChill) and are maintained at 35°C for 6 hours after reopening of the vessel using surface cooling, and then slowly rewarmed.
Researchers will compare the intervention group (hypothermia and endovascular treatment and best medical treatment including iv thrombolysis) and control group (only endovascular treatment and best medical treatment including iv thrombolysis) to see if additional hypothermia leads to a better outcome after 3 months without relevant complications.
Study Overview
Status
Intervention / Treatment
Detailed Description
Despite the well-established benefit of endovascular treatment (EVT) for acute ischemic stroke due to large vessel occlusion (LVO), more than half of patients treated with EVT remain functionally dependent despite high reperfusion rates. Thus, new strategies such as additional neuroprotection using hypothermia need to be explored, first to bridge time to reperfusion and second, to attenuate reperfusion injury.
Although therapeutic hypothermia has consistently demonstrated robust neuroprotection in animal ischemic-reperfusion models, randomized trials in acute stroke patients have failed to demonstrate the efficacy of induced hypothermia. The reasons for this treatment failure are diverse and include treatment delay, the unfeasibility of inducing and maintaining hypothermia due to intolerance and shivering in awake patients, the missing recanalization in a large proportion of patients, the heterogeneity of patients included, and too deep (32-34°C) hypothermia associated with an increase in side effects.
In the pilot study COTTIS-1, we could demonstrate the feasibility and safety of immediately induced intraischemic hypothermia to 35°C with non-invasive transnasal cooling by RhinoChill® (BrainCool) followed by surface cooling for 6h after recanalization in sedated and intubated patients with LVO undergoing EVT. By combining this cooling technique with thrombectomy we have tried to address the above mentioned reasons for hypothermia failure. In COTTIS-1, the target temperature of 35°C was reached within 30 min, corresponding to a cooling rate of 2.6°C/h. All patients reached the target temperature, and 86% of the patients had reached ≤35°C at recanalization by thrombectomy. 68% of patients had a good outcome (independency) after 3 months. There were only asymptomatic side effects during hypothermia.
As a consequence, the present COTTIS-2 study is planned to evaluate the efficiency of this cooling protocol in a multicentric, randomized, controlled, end-point-blinded study in Germany.
Study Type
Enrollment (Estimated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Juergen Bardutzky, Prof.
- Phone Number: +49-15237729739
- Email: juergen.bardutzky@uniklinik-freiburg.de
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Pre-stroke modified Rankin Scale (mRS) 0-2 [7-point scale rating from 0 (no symptoms) to 6 (dead)]
- Acute ischemic stroke with NIHSS >5
- Intracranial occlusion of the M1 or M2 segment of the middle cerebral artery (MCA) or internal carotid artery (ICA) or tandem occlusion on CT-angiography or MR-angiography with indication for endovascular treatment:
Time window 0-24h:
- Last seen normal to groin puncture < 6h: native CT or MRI-DWI with ASPECTS >5
Last seen normal to groin puncture 6-24h or unknown time window: significant mismatch imaging according to the eligibility criteria of the DEFUSE-3 trial
- Infarct core <70ml (DWI oder CBF<30%)
- Penumbra > 15ml (Tmax >6sec)
- Ratio penumbra/core >1.8
- with or without iv thrombolysis with rtPA
Exclusion Criteria:
- Patients with an intranasal obstruction that prevents complete insertion of the nasal cannula should not be treated with the RhinoChill system.
- Known severe hemorrhagic diathesis (International Normalized Ratio (INR) >3.0, partial thromboplastin time (PTT) > 70s, platelet count < 50.000/μl)
- Brain trauma or neurovascular surgery/intervention <3 months
- Severe infection
- Pregnant women or women of childbearing potential (women of childbearing potential with negative pregnancy test may be included)
- Known cerebral vasculitis
- Proof of bleeding in cerebral CT or MRI (cerebral microbleeds in MRI [hypertensive or in the context of cerebral amyloid angiopathy] is permitted).
- Known life expectancy < 6 months
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: EVT group
standard endovascular treatment (EVT) for large vessel occlusion (LVO) without hypothermia
|
|
Active Comparator: EVT group plus hypothermia group
standard endovascular treatment (EVT) for large vessel occlusion (LVO) combined with hypothermia
|
hypothermia is started after intubation for endovascular treatment and induced by transnasal cooling (RhinoChill) to a target temperature of 35°C and hypothermia is then maintained at 35°C for 6 hours after recanalisation by surface cooling followed by slow rewarming by 0.2°C per hour to 36.5°C
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
functional outcome
Time Frame: 3 months
|
The presence of patients with good neurological outcome after 3 months as defined by modified Rankin Scale (mRS; on which scores range from 0 to 6, with 0 means no symptoms and 6 means death) of 0-2
|
3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
infarction volume
Time Frame: 24 hours
|
Infarction volume assessed in the standard CT 24 hours after thrombectomy
|
24 hours
|
increase in infarction
Time Frame: 24 hours
|
increase of the infarct core based on imaging at the time of admission (DWI-MRI or CBF<30% of contralateral side at CT-Perfusion) and CT after 24 hours
|
24 hours
|
recanalization result
Time Frame: after thrombectomy and 24 hours
|
Recanalization result (by mTICI score: successful recanalization mTICI 2b-3) after thrombectomy (based on angiography during/after thrombectomy) and 24 hours after thrombectomy (based on ultrasound of the cerebral vessels)
|
after thrombectomy and 24 hours
|
neurological improvement
Time Frame: 48 hours
|
Change of at least 8 points on the National Institutes of Health Stroke Scale (NIHSS; on which scores range from 0 to 42, with higher scores indicating a greater deficit) at 48 hours after thrombectomy
|
48 hours
|
outcome at discharge
Time Frame: up to 3 months
|
modified Rankin Score (mRS; on which scores range from 0 to 6, with 0 means no symptoms and 6 means death) upon discharge/transfer in rehabilitation
|
up to 3 months
|
shift in functional outcome
Time Frame: 3 months
|
ordinal shift across the range of modified Rankin Score (mRS; on which scores range from 0 to 6, with 0 means no symptoms and 6 means death)
|
3 months
|
very good clinical outcome
Time Frame: 3 months
|
Presence of patients with very good clinical outcome after 3 months (mRS 0-1)
|
3 months
|
mortality
Time Frame: 3 months
|
Mortality during acute hospitalisation and after 3 months
|
3 months
|
Length of ventilation
Time Frame: 3 months
|
Length of mechanical ventilation
|
3 months
|
Length of stay
Time Frame: 3 months
|
Length of ICU stay and hospital stay
|
3 months
|
body temperature
Time Frame: 24 hours
|
Temperature at admission, at recanalization, and first 6 hours after recanalization, and at 24 hours
|
24 hours
|
time to groin puncture
Time Frame: baseline, pre-intervention
|
Time from arrival until groin puncture
|
baseline, pre-intervention
|
time to recanalization
Time Frame: periprocedurally
|
Time from arrival until recanalization
|
periprocedurally
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Occurrence of intracerebral haemorrhage (ICH)
Time Frame: 24 hours
|
Hematoma >30% of initial infarction volume associated with a clinical deterioration in NIHSS score of at least 4 points within 24 hours after thrombectomy |
24 hours
|
Complications associated with hypothermia
Time Frame: 24hours
|
|
24hours
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Juergen Bardutzky, Prof., University of Freiburg, Department of Neurology, Germany
Publications and helpful links
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
- COTTIS-2_Version4.0-13Nov23
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- CSR
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, Sweden, Canada, Australia, Taiwan, Spain, Korea, Republic of, Latvia, Israel, Malaysia, Greece, Japan, Turkey, Netherlands, Romania, China, United Kingdom, Portugal, Italy, Brazil, France, Slovakia, ... and more
-
University of AlbertaCompletedTransient Ischemic Attack | Minor Ischemic StrokeCanada
-
Stephanie HarrisonActive, not recruitingTransient Ischemic Attack | Stroke, IschemicUnited Kingdom
Clinical Trials on hypothermia
-
WellStar Health SystemWithdrawnIschemic Stroke | HypothermiaUnited States
-
Lawson Health Research InstituteUniversity of Western Ontario, CanadaUnknownPulseless Electrical Activity | Asystole | Postcardiac ArrestCanada
-
The University of Texas Health Science Center,...National Institute of Neurological Disorders and Stroke (NINDS)TerminatedTraumatic Brain InjuryUnited States, Canada
-
University Hospital, GrenobleCompletedCardiac ArrestFrance
-
National Taiwan University HospitalUnknownOut-Of-Hospital Cardiac ArrestTaiwan
-
University of MiamiTerminatedHypothermiaUnited States
-
University of PittsburghNational Institute of Neurological Disorders and Stroke (NINDS); Laerdal MedicalCompletedBrain Injury | Cardiac ArrestUnited States
-
University of MiamiUnited States Department of DefenseRecruiting
-
Mahidol UniversityCompletedPostoperative Hypothermia in Patients With Cardiopulmonary BypassThailand
-
Sood, Beena G., MD, MSWithdrawn