Comparing mismatch strategies for patients being considered for ischemic stroke tenecteplase trials

Bivard, A. et al. (2020) Comparing mismatch strategies for patients being considered for ischemic stroke tenecteplase trials. International Journal of Stroke, 15(5), pp. 507-515. (doi: 10.1177/1747493019884529) (PMID:31684841)

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214106.pdf - Accepted Version



Background: Currently there are multiple variations of imaging-based patient selection mismatch methods in ischemic stroke. In the present study, we sought to compare the two most common mismatch methods and identify if there were different effects on the outcome of a randomized clinical trial depending on the mismatch method used. Aims: Investigate the effect of clinical and imaging-based mismatch criteria on patient outcomes of a pooled cohort from randomized trials of intravenous tenecteplase versus alteplase. Methods: Baseline clinical and imaging scores were used to categorize patients as meeting either the DAWN mismatch (baseline NIHSS ≥ 10, and age cut-offs for ischemic core volume) or DEFUSE 2 mismatch criteria (mismatch volume > 15 mL, mismatch ratio > 1.8 and ischemic core < 70 mL). We then investigated whether tenecteplase-treated patients had favorable odds of less disability (on modified Rankin scale, mRS) compared to those treated with alteplase, for clinical and imaging mismatch, respectively. Results: From 146 pooled patients, 71 received alteplase and 75 received tenecteplase. The overall pooled group did not show improved patient outcomes when treated with tenecteplase (mRS 0-1 OR 1.77, 95% CI 0.89–3.51, p = 0.102) compared with alteplase. A total of 39 (27%) patients met both clinical and imaging mismatch criteria, 25 (17%) patients met only imaging criteria, 36 (25%) met only clinical mismatch criteria and, finally, 46 (31%) did not meet either of imaging or mismatch criteria. Patients treated with tenecteplase had more favorable outcomes when they met either imaging mismatch (mRS 0–1, OR 2.33, 95% CI 1.13–5.94, p = 0.032) or clinical mismatch criteria (mRS 0–1, OR 2.15, 95% CI 1.142, 8.732, p = 0.027) but with differing proportions. Conclusion: Target mismatch selection was more inclusive and exhibited in a larger treatment effect between tenecteplase and alteplase.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Cheripelli, Dr Bharath Kumar and Moreton, Dr Fiona and Muir, Professor Keith and Ford, Professor Ian and Kalladka, Dr Dheeraj and Huang, Dr Xuya
Authors: Bivard, A., Huang, X., Levi, C. R., Campbell, B. C.V., Cheripelli, B. K., Chen, C., Kalladka, D., Moreton, F. C., Ford, I., Davis, S. M., Donnan, G. A., Muir, K. W., and Parsons, M. W.
Subjects:R Medicine > R Medicine (General)
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Robertson Centre
College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:International Journal of Stroke
Publisher:SAGE Publications
ISSN (Online):1747-4949
Published Online:04 November 2019
Copyright Holders:Copyright © 2019 World Stroke Organization
First Published:First published in International Journal of Stroke 15(5): 507-515
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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