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Tenecteplase and Alteplase combined with EVT improve mRS 0-1 outcomes in large vessel occlusionAdding certain clot-busting drugs improves outcomes for stroke patients

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Key Takeaway
Consider adding TNK 0.125 mg/kg or ALT 0.225 mg/kg to EVT to improve mRS 0-1 outcomes in large vessel occlusion.

This systematic review and network meta-analysis evaluated the efficacy of intra-arterial thrombolysis (IAT) using Alteplase (ALT) 0.225 mg/kg or Tenecteplase (TNK) 0.125 mg/kg and 0.0625 mg/kg compared to endovascular treatment (EVT) alone in patients with acute ischemic stroke (AIS) caused by large vessel occlusion (LVO). The analysis included 2564 patients to assess 90-day modified Rankin Scale (mRS) scores and safety outcomes.

The meta-analysis found that EVT plus TNK 0.125 mg/kg (RR 1.54; 95% CI 1.07-2.20) and EVT plus ALT 0.225 mg/kg (RR 1.51; 95% CI 1.22-1.89) both improved mRS 0-1 outcomes compared to EVT alone. No significant differences were found for mRS 0-2 or mortality across the regimens. Regarding safety, the lower dose of TNK 0.0625 mg/kg was associated with an increased risk of any intracranial hemorrhage (RR 1.34; 95% CI 1.08-1.66).

Authors noted that larger trials are required to confirm optimal dosing and patient selection. Clinically, IAT with ALT 0.225 mg/kg or TNK 0.125 mg/kg may enhance post-EVT recovery without increasing symptomatic intracranial hemorrhage risk. Results should be interpreted with caution as the study is a network meta-analysis of RCTs.

How this fits prior evidence

This finding extends the evidence that Tenecteplase and Alteplase improve functional outcomes in extended windows and that Tenecteplase shows higher mRS 0 to 1 rates in distal M3 and beyond occlusions. It specifically addresses the role of intra-arterial administration for large vessel occlusions. While previous evidence noted that Tenecteplase may have lower sICH odds compared to Alteplase in intravenous settings, this analysis specifically highlights that the lower dose of TNK 0.0625 mg/kg increased the risk of any intracranial hemorrhage.

When a person suffers a stroke caused by a large blood vessel blockage, every second counts. Doctors often use a procedure called mechanical thrombectomy (EVT) to physically remove the clot. However, new data suggests that combining this procedure with specific clot-busting drugs, known as thrombolysis, can lead to better results for many patients.

A review of data from over 2,500 patients found that adding either Alteplase or a specific dose of Tenecteplase to the standard procedure improved the chances of an excellent recovery. While both drugs showed promise in helping patients regain function, the study did not find that these additions changed the overall mortality rate or the rate of moderate recovery.

Safety is a major concern in stroke treatment. While the study noted that one specific lower dose of Tenecteplase increased the risk of any brain bleed, the other doses did not show an increase in serious bleeding. Because these results come from a network meta-analysis, researchers note that larger trials are still needed to confirm the best dosages and select the right patients.

What this means for you:
Adding Alteplase or Tenecteplase to standard stroke procedures can improve recovery for some patients.

Common questions

Which medications showed the best results for stroke recovery?

The study found that adding Alteplase (0.225 mg/kg) or Tenecteplase (0.125 mg/kg) to the standard procedure improved the chances of an excellent recovery compared to the standard procedure alone. Both of these options showed a significant increase in patients achieving the best possible outcomes.

Are these treatments safe for stroke patients?

While the combination of Tenecteplase (0.125 mg/kg) and Alteplase (0.225 mg/kg) did not increase the risk of serious bleeding, one specific lower dose of Tenecteplase (0.0625 mg/kg) did increase the risk of any brain bleed. You should speak with a doctor to discuss the safest options for a specific case.

Do these drugs help patients live longer?

The data showed that while adding these medications improved the chances of an excellent recovery, they did not change the overall mortality rate. This means the drugs helped more people reach a better physical state, but they did not change the number of people who survived the event.

Study Details

Study typeSystematic review
Sample sizen = 2,564
EvidenceLevel 1
PublishedOct 2026
View Original Abstract ↓
BACKGROUND AND OBJECTIVES: Endovascular thrombectomy (EVT) is the gold standard treatment for acute ischemic stroke (AIS) caused by large vessel occlusion (LVO) in patients meeting certain eligibility criteria. A critical challenge in this regard is the phenomenon of futile recanalization, which can be partially explained by embolism of the distal microcirculation. Thus, a few clinical trials investigated the efficacy and safety profile of intra-arterial thrombolysis (IAT) post successful EVT aiming to improve EVT's clinical outcomes without increasing the risk of hemorrhagic complications. We aim to evaluate the efficacy and safety of adjunctive IAT after successful EVT for AIS-LVO. METHODS: A systematic review and network meta-analysis (NMA) of randomized controlled trials comparing IAT (Alteplase (ALT), Tenecteplase (TNK), or Urokinase (UK)) versus EVT alone were conducted. Primary outcomes were 90-day modified Rankin Scale (mRS) 0-1, mRS 0-2, and mortality; safety outcomes included any and symptomatic intracranial hemorrhage (any ICH and sICH). RESULTS: Eight trials (2564 patients) were included. EVT + TNK 0.125 mg/kg (RR 1.54, 95% CI 1.07-2.20) and EVT + ALT 0.225 mg/kg (RR 1.51, 95% CI 1.22-1.89) improved excellent outcomes (mRS 0-1) versus EVT alone. No regimen improved mRS 0-2 or mortality. EVT + TNK 0.0625 mg/kg increased the risk of any ICH (RR 1.34, 95% CI 1.08-1.66), but not the risk of sICH. DISCUSSION: IAT, particularly with ALT 0.225 mg/kg or TNK 0.125 mg/kg, may enhance post-EVT recovery without increasing sICH risk. Larger trials are needed to confirm optimal dosing and patient selection.
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