Endovascular Treatment for Mild Stroke With Acute Anterior Circulation Large Vessel Occlusion

Endovascular Treatment Clinical Trial

Official title:

Endovascular Treatment for Mild Stroke With Acute Anterior Circulation Large Vessel Occlusion：a Multicenter Randomized Controlled Trail

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06179017
• Other study ID #: MILD-MT
• Status: Not yet recruiting
• Phase: N/A
• Start date: January 1, 2024
• Est. completion date: December 31, 2027

Study information

• Verified date: December 2023
• Source: Zhangzhou Municipal Hospital
• Contact: Wenhuo Chen, MD
• Phone: +8613806906089
• Email: 13806906089[@]126.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Exploring the Efficacy and Safety of Emergent Endovascular Treatment in Patients with Mild Ischemic Stroke Caused by Acute Anterior Circulation Large Vessel Occlusion based on Perfusion Imaging Screening

Description:

This study aims to select suitable patients with mild AIS caused by anterior circulation LVO with mismatch volume of the ischemic penumbra based on screen of cerebral perfusion imaging. It is a prospective, multicenter, endpoint-blinded, randomized controlled trial design, and aim to explore the efficacy and safety of EVT for mild AIS patients with anterior circulation large vessel occlusion within 24 hours of onset.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 300
• Est. completion date: December 31, 2027
• Est. primary completion date: August 31, 2027
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria Inclusion Criteria

1. Age 18-80 years old;

2. Symptoms onset or last known well to randomization is within 24 hours.

3. Clinical diagnosis of acute ischemic stroke due to anterior circulation intracranial large vessel occlusion (LVO) (including intracranial internal carotid artery [ICA], middle cerebral artery [MCA] M1 segment, MCA M2 segment, with or without ipsilateral extracranial ICA occlusion) confirmed on Computerized tomography angiography (CTA) or Magnetic resonance imaging angiography (MRA) ;

4. Baseline NIHSS score <6 before randomization (including cases with NIHSS =6 at onset but improves before randomization);

5. ASPECTS score =6 based on Non-contrast CT (NCCT) before randomization, and computerized tomography perfusion (CTP) or magnetic resonance imaging perfusion (MRP) imaging presented infarct core volume (relative cerebral blood flow (rCBF) <30%/DWI-ADC<620) =50ml, and mismatch volume (Tmax>6 seconds volume - rCBF <30% /DWI-ADC<620) =50mL;

6. The patient or their legal representatives voluntarilysigned the informed consent form. Clinical Exclusion Criteria

1. Premorbid Rankin Scale (mRS) score = 1;

2. Known allergy to iodine, heparin, anaesthesia, or other definite contraindication to receiving endovascular treatment (EVT) procedure;

3. Patient has severe or fatal co-morbidities that could interfere with outcome assessments and follow-up (such as malignant tumor, severe heart failure, or renal failure, or life expectancy less than 6 months);

4. Poorly controlled hypertension (systolic blood pressure >220 mmHg or diastolic blood pressure >120 mmHg);

5. Baseline blood glucose <50mg/dL (2.78 mmol/L) or >400mg/dL (22.20 mmol/L);

6. Known bleeding tendencies, including but not limited to platelet count <100×109/L; received heparin treatment within 48 hours with an activated partial thromboplastin time (APTT) =35s; recent oral anticoagulant therapy with international normalized ratio (INR) >3; Note: Patients without a history of coagulation abnormalities or without suspicion of coagulation abnormalities do not need to wait for laboratory test results before enrollment;

7. Seizures at stroke onset or during the course, hard to accurately judge the baseline NIHSS score;

8. Female who is known to be pregnant, lactation, or tested positive for pregnancy at time of admission;

9. Currently participating in another investigational drug study or medical device treatments that may interfere with the results of this study;

10. Other conditions deemed unsuitable for participation, in the opinion of the investigator, or that may pose significant risks to the patient if participating the study.

Imaging Exclusion Criteria:

1. Evidence of intracranial hemorrhage on CT/MRI, including cerebral parenchymal hemorrhage, intraventricular hemorrhage, subarachnoid hemorrhage, and subdural/extradural hemorrhage;

2. Significant midline displacement, hernia of brain, or ventricular mass effect with midline displacement confirmed on CT/MRI;

3. Anticipated impossibility to complete endovascular treatment, such as vascular tortuosity, severe vascular wall calcification, etc.;

4. Aortic dissection;

5. Multiple intracranial large vessel occlusions confirmed by CTA or MRA, unable to clearly identify the symptomatic vessel, such as bilateral MCA occlusions or occlusions involving both the MCA and basilar artery;

6. Suspected or confirmed occluded artery is non-acute occlusion.

Related Conditions & MeSH terms

• Endovascular Treatment
• Stroke

Intervention

Other:
• Experimental group:Intervention Group
Intervention Group:Interventionist choose the optimal endovascular treatment (EVT) strategy and device based on the patient's condition and local guidelines. The patient will receive the best medical treatment according to the local guidelines.
• Control group:best medical treatment
Best medical treatment:Patients will receive the best medical treatment according to local guidelines, including antiplatelet agents, anticoagulants, thrombolysis, etc., but not any EVT. In the control arm, rescue EVT is allowed in patients with disease progression leading to an increase in NIHSS=4 and excluding the impact of non-stroke factors, and the onset-to-treatment time is within 24 hours.

Locations

Country	Name	City	State
China	Zhangzhou Municipal Hospital	Zhangzhou	Fujian

Sponsors (3)

Lead Sponsor	Collaborator
Zhangzhou Municipal Hospital	Changhai Hospital, The Affiliated Hospital Of Guizhou Medical University

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	the rate of symptomatic intracranial hemorrhage	according to the Heidelberg criteria	within 48 hours
Other	rate of early neurological deterioration	an increase in NIHSS=4 or an increase of =2 in any individual item	within 7 days
Other	mortality	death	90±7 days and 365±30 days
Primary	the rate of excellent outcome at () days	mRS score 0-1	90±7 days and 365±30 days
Secondary	mRS shift	distribution of mRS scores	90±7 days and 365±30 days
Secondary	proportion of subjects with good neurological function prognosis	mRS score 0-2	90±7 days and 365±30 days