Clinical trial No longer in our active list Interventional Ages 18 and up

Comparing two treatments for basilar artery occlusive stroke

Official title: Endovascular Treatment With Or Without Intravenous Alteplase In Acute Ischemic Stroke Of Basilar Artery Occlusion: A Multicenter, Prospective, Randomized Controlled Trial (BEST-BAO)

Run by Sichuan Academy of Medical Sciences · NCT05631847 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing whether a combination of two treatments for a type of stroke caused by a blocked basilar artery works better than using just one of those treatments alone.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment340 (estimated)
SponsorSichuan Academy of Medical Sciences
Academic / other
Locations85 sites (Hefei, Anhui and 84 other locations)
Trial IDNCT05631847 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients diagnosed with acute ischemic stroke caused by basilar artery occlusion who are eligible for both intravenous thrombolysis and endovascular treatment.

Probably not a fit

Patients who have contraindications for thrombolysis or those with intracranial hemorrhage will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to compare the efficacy and safety of intravenous thrombolysis (IVT) followed by endovascular treatment (EVT) against EVT alone in patients suffering from acute ischemic stroke caused by basilar artery occlusion. The study will be conducted as a multicenter, prospective, open-label, blinded endpoint evaluation, randomized controlled trial. It seeks to address the current lack of direct comparisons between these two treatment strategies, which have shown varying results in previous studies. By enrolling eligible patients within 4.5 hours of symptom onset, the trial will provide valuable insights into the best treatment approach for this severe condition.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment protocols for patients with acute ischemic stroke due to basilar artery occlusion, potentially enhancing recovery and reducing mortality rates.

How similar studies have gone: While previous studies have suggested that IVT followed by EVT may be superior, this trial is novel in its direct comparison of these two treatment strategies in a randomized controlled setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

1. A clinical diagnosis of AIS.
2. Caused by BAO confirmed by CTA, MRA, or DSA. (BAO is defined as the absence of visualization of the basilar artery on CTA, MRA or DSA. Bilateral vertebral artery occlusions or occlusion of a unilateral vertebral artery that is the sole supplier of the basilar artery, even in the presence of patent basilar artery, will be considered de facto BAO.)
3. CT or MRI ruling out intracranial hemorrhage,
4. Eligible for IVT and EVT (within 4.5 hours of symptom onset). (Symptoms onset is defined as point in time the patient was last seen well \[at baseline\] if patients are unable to provide a reliable history or the point in time when symptoms have started if patients can provide a reliable history. Symptoms onset includes diplopia, midline ataxia, visual loss, sensory or motor deficits, and conscious disturbance. Isolated vertigo \[not accompanied by dysarthria, motor weakness, sensory symptoms, double vision, depressed level of consciousness\] is not considered onset of symptoms.)
5. NIHSS score ≥ 6.
6. Age ≥ 18 years.
7. Signed informed consent by the patient or legal representative.

Exclusion criteria:

1. mRS score \> 2 before this stroke.
2. Any contraindication to IVT as per the 2019 AHA/ASA guidelines for early management of AIS:

1) Blood pressure \> 185/110 mmHg and cannot be controlled by standard medication, 2) Blood glucose \< 50mg/dL (2.8 mmol/L) or \> 400mg/dL (22.2 mmol/L), 3) Had a cerebral infarction in the previous 6 weeks with residual neurological deficit or signs of recent infarction on neuroimaging, 4) Severe head trauma in the previous 3 months, 5) Major surgery or severe trauma in the previous 2 weeks, 6) Gastrointestinal or urinary bleeding in the previous 3 weeks, 7) previous intracranial hemorrhage, 8) Using anticoagulants and International normalized ratio (INR) \> 1.7, 9) Known platelet count \< 100 × 109/L, 10) treatment with direct thrombin or factor X inhibitors, 11) Heparin treatment in the previous 48 hours with the activated partial thromboplastin time (APTT) exceeding the upper limit of normal.

(3) Pregnancy, breastfeeding, or intention to conceive during the study period. (4) Other conditions deemed unsuitable by the investigator.

Where it's running

  • Banan Hospital Affiliated to Chongqing Medical University
    Chongqing, Chongqing, China
    Recruiting
  • Chongqing University Affiliated S Central Hospital
    Chongqing, Chongqing, China
    Recruiting
  • Chongqing University Medical University Affiliated Yongchuan Hospital
    Chongqing, Chongqing, China
    Recruiting
  • Liangping District People's Hospital
    Chongqing, Chongqing, China
    Recruiting
  • Zhangzhou Hospital
    Zhangzhou, Fujian, China
    Recruiting
  • Maoming County Traditional Chinese Medicine Hospital
    Maoming, Guangdong, China
    Recruiting
Show 44 more locations
  • Yuebei People's Hospital
    Shaoguan, Guangdong, China
    Recruiting
  • Yulin First People's Hospital
    Yulin, Guangxi, China
    Recruiting
  • Qiandongnan Miao and Dong Autonomous Prefecture People's Hospital
    Kaili, Guizhou, China
    Recruiting
  • Anyang People's Hospital
    Anyang, Henan, China
    Recruiting
  • Jiaozuo Second People's Hospital
    Jiaozuo, Henan, China
    Recruiting
  • Nanyang Central Hospital
    Nanyang, Henan, China
    Recruiting
  • Zhoukou Central Hospital
    Zhoukou, Henan, China
    Recruiting
  • Zhumadian Central Hospital
    Zhumadian, Henan, China
    Recruiting
  • Xiangyang Central Hospital
    Xiangyang, Hubei, China
    Recruiting
  • Changde First People's Hospital
    Changde, Hunan, China
    Recruiting
  • Jingjiang People's Hospital
    Jingjiang, Jiangsu, China
    Recruiting
  • The First People's Hospital of Suqian City
    Suqian, Jiangsu, China
    Recruiting
  • Yancheng First People's Hospital
    Yancheng, Jiangsu, China
    Recruiting
  • Jilin University Sino Japanese Friendship Hospital
    Changchun, Jilin, China
    Recruiting
  • The First Hospital of Jilin University
    Jilin, Jilin, China
    Recruiting
  • Tieling Central Hospital
    Tieling, Liaoning, China
    Recruiting
  • Yingkou Central Hospital
    Yingkou, Liaoning, China
    Recruiting
  • Heze Municipal Hospital
    Heze, Shandong, China
    Recruiting
  • Linyi Traditional Chinese Medicine Hospital
    Linyi, Shandong, China
    Recruiting
  • Rizhao Traditional Chinese Medicine Hospital
    Rizhao, Shandong, China
    Recruiting
  • The Second Affiliated Hospital of Shandong First Medical University
    Taian, Shandong, China
    Recruiting
  • Bazhong Central Hospital
    Bazhong, Sichuan, China
    Recruiting
  • Chengdu Third People's Hospital
    Chengde, Sichuan, China
    Recruiting
  • Sichuan Third People's Hospital
    Chengdu, Sichuan, China
    Recruiting
  • West China Hospital of Sichuan University
    Chengdu, Sichuan, China
    Recruiting
  • Affiliated Hospital of Chengdu Medical College
    Chengdu, Sichuan, China
    Recruiting
  • Chengdu First People's Hospital
    Chengdu, Sichuan, China
    Recruiting
  • Chengdu Second People's Hospital
    Chengdu, Sichuan, China
    Recruiting
  • Chongzhou People's Hospital
    Chengdu, Sichuan, China
    Recruiting
  • Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital
    Chengdu, Sichuan, China
    Recruiting
  • Deyang People's Hospital
    Deyang, Sichuan, China
    Recruiting
  • Guang'an Central Hospital
    Guang'an, Sichuan, China
    Recruiting
  • Guanghan People's Hospital
    Guanghan, Sichuan, China
    Recruiting
  • Guangyuan Central Hospital
    Guangyuan, Sichuan, China
    Recruiting
  • Guangyuan First People's Hospital
    Guangyuan, Sichuan, China
    Recruiting
  • Jintang County People's Hospital
    Jintang, Sichuan, China
    Recruiting
  • Leshan People's Hospital
    Leshan, Sichuan, China
    Recruiting
  • Affiliated Hospital of Southwest Medical University
    Luzhou, Sichuan, China
    Recruiting
  • Meishan Second People's Hospital
    Meishan, Sichuan, China
    Recruiting
  • Meishan Traditional Chinese Medicine Hospital
    Meishan, Sichuan, China
    Recruiting
  • Mianyang 404 Hospital
    Mianyang, Sichuan, China
    Recruiting
  • Mianyang Central Hospital
    Mianyang, Sichuan, China
    Recruiting
  • Affiliated Hospital of North Sichuan Medical College
    Nanchong, Sichuan, China
    Recruiting
  • Nanchong Central Hospital
    Nanchong, Sichuan, China
    Recruiting

+35 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.