Minocycline for Acute Ischemic Stroke Undergoing Endovascular Treatment Due to Basilar Artery Occlusion (MIST-B)

Phase 4

Active, not recruiting

• Conditions: Ischemic Stroke, Acute; Minocycline; Endovascular Treatment; Basilar Artery Occlusion
• Interventions: Drug: Minocycline

• Registration Number: NCT05512910
• Lead Sponsor: Xijing Hospital

Brief Summary

This is a multi-center, evaluator-blinded, randomized, open-label, proof of concept trial to explore possible beneficial effect of adjunctive oral minocycline on acute ischemic stroke (AIS) undergoing endovascular treatment due to basilar artery occlusion (BAO). Minocycline has excellent safety profiles, have been previously demonstrated individually to reduce infarction in animal models of stroke, and have potentially mechanisms of antioxidant, anti-inflammatory, anti-apoptotic and protection of blood-brain barrier. However, it is not known whether minocycline can reduce futile recanalization of endovascular treatment, and improve the outcome of patients with AIS due to BAO. Eligible and willing subjects will be randomly assigned to the treatment group or the control group. The treatment group will receive 200 mg oral minocycline, followed by 100 mg every 12 hours times for a total of 5 days. Both groups will receive endovascular thrombectomy and standard medical. The treatment with minocycline will start as soon as possible after randomization. Considering the risk of difficulty in feeding tube before EVT, minocycline administered within one hours after EVT is acceptable. Measures of stroke severity and disability will be recorded at baseline and through the follow-up periods (90 days). The evaluator will be blind to the allocation of patients further minimizing the bias.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2022-08-18
• Study First Submitted QC: 2022-08-20
• Study First Posted: 2022-08-23
• Study Start: 2023-03-04
• Primary Completion: 2025-03-11
• Status Verified: 2025-05
• Last Update Submitted: 2025-05-24
• Last Update Posted: 2025-05-30
• Study Completion: 2025-06-04

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 90

Inclusion Criteria

1. Age ≥ 18 years old.
2. Patients had acute symptoms and signs compatible with ischemia due to basilar artery occlusion (BAO), treated with endovascular therapy. Patients with occlusion of intracranial segments of both vertebral arteries (VA) resulting in no flow to the basilar artery (eg, functional basilar artery occlusion) were also eligible for the study.
3. Last known well to groin puncture between 0 to 24 hours, whether or not patients had thrombolysis with rt-PA.
4. Pre-stroke mRS score of 0-1.
5. Baseline expanded NIHSS (e-NIHSS) score ≥ 6.
6. Signed Informed Consent obtained.
7. Neuroimaging Inclusion Criteria: (1) Proven large vessel occlusion in BAO or VA-V4 occlusion (mTICI score 0-1) determined by MRA or CTA; (2) pc-ASPECTS score ≥ 5 (Non-Contrast CT or DWI); Pons-midbrain-index of<3.

Exclusion Criteria

1. Age<18 years old.
2. Complete cerebellar infarct with significant mass effect or has the imaging features of acute hydrocephalus in NCCT.
3. Intracranial hemorrhage.
4. Previous stroke in the past 90 days;
5. cardiopulmonary resuscitation was performed within 10 days prior to onset.
6. Known hereditary or acquired hemorrhagic diathesis, coagulation factor deficiency, INR >3, or platelet<40×109/L.
7. Glucose <2.2 or >22 mmol/L.
8. Systolic blood pressure persistently>185mmHg post-MT despite antihypertensive intervention; Diastolic blood pressure persistently>110mmHg post-MT despite antihypertensive intervention.
9. Acute or chronic renal failure of CKD grade 3-4.
10. Known allergy or hypersensitivity to contrast dye or tetracycline group of drugs.
11. Epileptic seizure at symptom onset.
12. Life expectancy (except for stroke) < 3 months.
13. Female who is pregnancy or breastfeeding, or whom do not use effective contraception at childbearing age.
14. Pre-existing mental illness that interferes with neurological evaluation.
15. Known current participation in another clinical investigation with experimental drug.
16. Unlikely to be available for 90 days follow-up.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Treatment group	Minocycline	Patients randomized to the treatment group will receive oral minocycline in addition to endovascular treatment and other standard medical. The first dose of minocycline will be administered 200 mg orally, followed by 100 mg every 12 hours times for a total of 5 days. After randomization, oral minocycline should be given as soon as possible before the EVT treatment. If vomiting occurs within half an hour of the first dose, the clinician should assess the necessary of re-administering 100mg based on the severity of vomiting. If the patient is considered to be at any risk for aspiration or is unable to swallow based on swallowing evaluation, study drug will be oral via feeding tube. Considering the risk of difficulty in feeding tube before EVT, minocycline administered within one hours after EVT is acceptable.

Primary Outcome Measures

Name	Time	Method
The expanded NIH Stroke Scale (e-NIHSS) at 5-7 days or at discharge	5-7 days or discharge after onset	The primary effectiveness outcome was the e-NIHSS score at 5-7 days or at discharge. 11-item neurologic examination scale for severity of posterior circulation stroke, adding specific elements in existing items of NIHSS.
Incidence of symptomatic intracranial hemorrhage at 24 hours from randomization	24 hours from randomization	The primary safety outcome was the incidence of symptomatic intracranial hemorrhage, defined as neurological deterioration (≥4-point increase on the NIHSS score) within 24 hours from randomization and evidence of intracranial hemorrhage on imaging studies.

Secondary Outcome Measures

Name	Time	Method
Length of Intensive Care Unit (ICU) stay and hospital stay	From the date of admission until discharged from ICU or hospital, up to 4 weeks	Length of ICU or hospital stay
mRS at 90 (±14) days	90 (±14) days from randomization	Secondary outcome measure is the degree of disability or dependence at 90 (±14) days as assessed by the mRS scale. The scale runs from 0-6 with "0" being perfect health without symptoms to "6" being death.
Good outcome at 90 (±14) days from randomization	90 (±14) days from randomization	An mRS score of 0-3 indicated a good outcome, whereas a score of \>3 indicated a poor outcome.
Favorable outcome at 90 (±14) days from randomization	90 (±14) days from randomization	An mRS score of 0-2 indicated a favorable outcome, whereas a score of \>2 indicated a poor outcome.
Excellent outcome at 90 (±14) days from randomization	90 (±14) days from randomization	An mRS score of 0-1 indicated an excellent outcome, whereas a score of \>1 indicated a poor outcome
NIH Stroke Scale (NIHSS) at 24 hours, 5-7 days or discharge, 30 (±7) days and 90 (±14) days from randomization	90 (±14) days from randomization	11-item neurologic examination scale for severity of stroke. Ratings for each item are scored with 3 to 5 grades. A total NIHSS of 0 is normal; 1-4 is considered a minor stroke; 5-15 moderate; 16-20 moderate to severe; and 21-42 severe.
Modified Barthel Index at 30 (±7) days and 90 (±14) days	30 (±7) days and 90 (±14) days from randomization	The modified Barthel Index (mBI) is an ordinal scale used to measure performance in activities of daily living (ADL). The Barthel Index score are scored, a higher number being a reflection of greater ability to function independently following hospital discharge.
Mortality at 90 (±14) days from randomization	90 (±14) days from randomization	All-cause mortality occurring within 90 (±14) days follow-up were recorded.
Change in infarct volume from baseline to day 5-7 or discharge	5-7 days from randomization or discharge	Changes of infarct volume from baseline (measured by DWI) to day 5-7 or discharge of stroke onset (measured by Flair). Images are processed by imSTROKE software.
Pneumonia at 5-7 days or discharge, 30 (±7) days and 90 (±14) days	90 (±14) days from randomization	Determine whether rates of pneumonia are different in the two arms. Rates will be measured as percentages of the entire population at risk.
Time of mechanical ventilation or non-invasive ventilation at 5-7 days or at discharge	5-7 days from randomization or discharge	Determine whether time of mechanical ventilation or non-invasive ventilation are different in the two arms. Rates will be measured as percentages of the entire population at risk.
Change in hematology assessments: percentage of the lymphocyte subpopulations (%) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	The percentage of lymphocyte subpopulations in % will be assessed by flow cytometry.
Change in hematology assessments: matrix metalloproteinase-9 (ng/ml) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	The level of matrix metalloproteinase-9 in ng/ml will be assessed by ELISA method.
Change in hematology assessments: IL-6 (pg/ml) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	The level of IL-6 in pg/ml will be assessed by ELISA method.
Change in hematology assessments: IL-10 (pg/ml) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	The level of IL-10 in pg/ml will be assessed by ELISA method.
Change in hematology assessments: TNF-α (nmol/L) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	The level of TNF-α in nmol/L will be assessed by ELISA method.
Change in hematology assessments: leucocytes (x 10^9 /L) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	Change in the level of leucocytes x 10\^9 /L.
Change in hematology assessments: neutrophilic granulocyte percentage (%) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	Change in the neutrophilic granulocyte percentage in %.
Change in hematology assessments: absolute neutrophil value (x 10^9 /L) at 5-7 days or at discharge as compared to Baseline	5-7 days from randomization or discharge	Change in the level of absolute neutrophil value x 10\^9 /L.
Incidence of symptomatic intracranial hemorrhage at 3 days from randomization	3 days from randomization	The secondary safety outcome was the incidence of symptomatic intracranial hemorrhage, defined as neurological deterioration (≥4-point increase on the NIHSS score) within 3 days from randomization and evidence of intracranial hemorrhage on imaging studies.

Trial Locations

Locations (1)

Department of Neurology, Xijing Hospital, Fourth Military Medical University; 🇨🇳 Xi'an, Shaanxi, China