Safety of Adjunctive Intraarterial Tenecteplase Following Mechanical Thrombectomy: The ALLY Pilot Trial.
Syed F Zaidi, Alicia C Castonguay, Osama O Zaidat...
https://pubmed.ncbi.nlm.nih.gov/39772606/Actively Recruiting
Led by ProMedica Health System · Updated on 2026-01-21
132
Participants Needed
1
Research Sites
N/A
Total Duration
Researchers are studying the safety and effectiveness of intra-arterial Tenecteplase TNK as an additional treatment in adults with acute ischemic stroke caused by large vessel blockages in the anterior circulation of the brain Internal Carotid Artery and Middle Cerebral Arteries M1 and M2 segments. This Phase 2 and 3 trial focuses on patients who have undergone mechanical thrombectomy using FDA-approved devices and achieved successful reperfusion mTICI 2b or higher. The goal is to see if adding TNK improves recovery outcomes after stroke. Participants will be randomly assigned to receive either intra-arterial TNK following their mechanical thrombectomy or the best medical care without TNK. The study compares these two approaches to evaluate treatment benefits and risks. This trial will enroll adults aged 18 to 85 years who meet specific clinical and imaging criteria related to their stroke and thrombectomy results. During the study, patients will be monitored closely with assessments including the Modified Rankin Scale mRS at 90 days to measure disability, along with safety checks such as monitoring for brain hemorrhage and neurological worsening within 24 hours after treatment. Additional outcomes like functional independence, mortality rates, revascularization grades, and infarct volume will also be tracked. The total follow-up period includes visits up to 90 days after treatment to evaluate both efficacy and safety.
CONDITIONS
Adjunctive Intra-arterial Tenecteplase Following Mechanical Thrombectomy (ALLY) II Trial
S
Syed Fazal Zaidi, MD
T
Tanya Siddiqui
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ProMedica Health System
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | IA tenecteplase + Mechanical Thrombectomy | Best Medical Practice after Thrombectomy | IV Thrombolysis (Alteplase or Tenecteplase) + MT |
|---|---|---|---|
| What it is | Adjunct intra‑arterial tenecteplase given immediately after successful mechanical thrombectomy | Best medical practice following thrombectomy without adjunctive thrombolysis | Intravenous thrombolysis (alteplase or tenecteplase) given before thrombectomy is standard reperfusion strategy |
| Role in trial | Investigational adjunct to improve microvascular reperfusion post‑MT | Comparator arm with standard post‑MT care | Represents usual pre‑thrombectomy reperfusion practice |
| Primary use | To enhance distal reperfusion after mechanical thrombectomy | Support recovery after thrombectomy under standard medical care | To achieve early reperfusion prior to thrombectomy |
| How it is given | Intra‑arterial bolus of tenecteplase delivered immediately after achieving reperfusion | No additional thrombolytic after thrombectomy | Intravenous bolus (alteplase infusion or single‑dose tenecteplase) before thrombectomy |
| Evidence maturity | Efficacy under investigation; safety shown in pilot ALLY trial | Established as standard recovery pathway post‑MT | IV thrombolysis established to improve reperfusion before thrombectomy |
| Important risks | Potential increased risk of intracranial hemorrhage after IA lytic | Standard thrombectomy risks without adjunct intra‑arterial lytic | Known hemorrhage risk from IV thrombolysis |
| Important limitations | Adjunct IA TNK is experimental; clinical benefit and safety unknown until trial completes | Control reflects current care but may not include newer reperfusion adjuncts | Represents pre‑MT strategy and not directly comparable to post‑MT interventions |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Single treatment procedure
Participants receive either intra-arterial Tenecteplase following mechanical thrombectomy or best medical practice treatment.
1 treatment visit (in-person)
Duration - Up to 90 days post treatment
Participants are monitored for safety and efficacy outcomes after treatment, including assessments of neurological status and brain imaging.
Approximately 3 visits: at 24 hours, discharge (around Day 6), and 90 days post treatment
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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Syed F Zaidi, Alicia C Castonguay, Osama O Zaidat...
https://pubmed.ncbi.nlm.nih.gov/39772606/ProMedica Health System
Lead Sponsor