Abstract
Acute basilar artery occlusion (BAO) is one of the most severe forms of stroke, associated with high morbidity and mortality. Intravenous thrombolysis with alteplase (rtPA) is the standard recanalization therapy, but the benefits of endovascular
therapy (EVT) in this context remained controversial until recently. The BASICS (Basilar Artery International Cooperation Study) was a multicenter, international, randomized clinical trial that assessed the efficacy and safety of additional EVT compared to best standard medical treatment. This article presents the results of the Brazilian arm of the study, highlighting its importance and impact in our setting. Thirty Brazilian patients with BAO were included, of whom 15 received EVT and 15 were assigned to the control group. The rate of favorable functional outcome (modified Rankin Scale [mRS] 0–3) at 90 days was 46.7% in the EVT group versus 40.0% in the control group. The mortality rate was 33.3% in the EVT group and 46.7% in the control group. The results were very similar to those found in the overall BASICS trial population and suggest that EVT is a safe and potentially beneficial strategy for patients with BAO, reinforcing the need to expand access to this intervention within the Brazilian public health system (SUS).
References
1. Dias FA, Alessio-Alves FF, Castro-Afonso LH, et al. J Stroke Cerebrovasc Dis. 2017;26(10):2191-2198. Doi: 10.1016/j. jstrokecerebrovasdis.2017.04.043.
2. Powers WJ, Rabinstein AA, Ackerson T, et al. Guidelines for the Early Management of Patients With Acute Ischemic Stroke:
2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke: A Guideline for Healthcare Professionals
From the American Heart Association. Stroke. 2019;50(12):e344-e418. Doi: 10.1161/STR.0000000000000211.
3. Saqqur M, Uchino K, Demchuk AM, et al; CLOTBUST Investigators. Site of arterial occlusion identified by transcranial
Doppler predicts the response to intravenous thrombolysis for stroke. Stroke [internet]. 2007;38(3):948-54. Doi: 10.1161/01.
STR.0000257304.21967.ba.
4. Goyal M, Menon BK, van Zwam WH, et al. Endovascular thrombectomy after large-vessel ischaemic stroke: a meta-analysis of individual patient data from five randomised trials. Lancet [internet]. 201623;387(10029):1723-31. Doi: 10.1016/S0140-6736(16)00163-X.
5. Nogueira RG, Jadhav AP, Haussen DC, et al. Thrombectomy 6 to 24 Hours after Stroke with a Mismatch between Deficit and
Infarct. N Engl J Med [internet]. 2018;378(1):11-21. Doi: 10.1056/NEJMoa1706442.
6. Albers GW, Marks MP, Kemp S, et al. Thrombectomy for Stroke at 6 to 16 Hours with Selection by Perfusion Imaging. N Engl J Med [internet]. 2018;378(8):708-718. Doi: 10.1056/NEJMoa1713973.
7. Martins SCO, Pontes-Neto OM, Pille A, et al. Reperfusion therapy for acute ischemic stroke: where are we in 2023? Arq Neuropsiquiatr [internet]. 2023;81(12):1030-1039. Doi: 10.1055/s-0043-1777721.
8. Martins SO, Mont'Alverne F, Rebello LC, et al. Thrombectomy for Stroke in the Public Health Care System of Brazil. N Engl J Med [internet]. 2020;382(24):2316-2326. Doi: 10.1056/NEJMoa2000120.
9. Strbian D, Sairanen T, Silvennoinen H, Salonen O, Lindsberg PJ. Intravenous thrombolysis of basilar artery occlusion: thrombus length versus recanalization success. Stroke [internet]. 2014;45(6):1733-8. Doi: 10.1161/STROKEAHA.114.004884.
10. Lindsberg PJ, Mattle HP. Therapy of basilar artery occlusion: a systematic analysis comparing intra-arterial and intravenous thrombolysis. Stroke [internet]. 2006;37(3):922-8. Doi: 10.1161/01.STR.0000202582.29510.6b.
11. Langezaal LCM, van der Hoeven EJRJ, Mont'Alverne FJA, et al. Endovascular Therapy for Stroke Due to Basilar-Artery Occlusion. N Engl J Med [internet]. 2021;384(20):1910-1920. Doi: 10.1056/NEJMoa2030297.
12. van der Hoeven EJ, Schonewille WJ, Vos JA, et al. The Basilar Artery International Cooperation Study (BASICS): study protocol for a randomised controlled trial. Trials [internet]. 2013;14:200. Doi: 10.1186/1745-6215-14-200.
13. Tao C, Nogueira RG, Zhu Y, et al. Trial of Endovascular Treatment of Acute Basilar-Artery Occlusion. N Engl J Med [internet]. 2022 ;387(15):1361-1372. Doi: 10.1056/NEJMoa2206317.
14. Jovin TG, Li C, Wu L, et al. Trial of Thrombectomy 6 to 24 Hours after Stroke Due to Basilar-Artery Occlusion. N Engl J Med [internet]. 2022;387(15):1373-1384. doi: 10.1056/NEJMoa2207576.
15. Nogueira RG, Jovin TG, Liu X, et al. Endovascular therapy for acute vertebrobasilar occlusion (VERITAS): a systematic review and individual patient data meta-analysis. Lancet [internet]. 2025;405(10472):61-69. Doi: 10.1016/S0140-6736(24)01820-8.

This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2025 Francisco Antunes Dias, Rui Kleber do Vale Martins Filho, Renato Ramon da Cruz, Daniel G Abud, Octavio Marques Pontes Neto