Antiplatelet Therapy in Acute Mild-Moderate Ischemic Stroke

Summary

The risk of early recurrence or progression of acute ischemic stroke is very high, even in patients treated with aspirin. The Chance study show that clopidogrel plus aspirin treatment reduced the risk of recurrent stroke in patients with transient ischemic attack (TIA) or minor ischemic stroke (NIHSS ≤ 3) within 24 hour onset and was not associated with increased hemorrhage events, compared with aspirin monotherapy. However, it is not known whether the dual antiplatelet treatment could reduce the risk of early recurrence or progression in patients with acute mild to moderate ischemic stroke (4 ≤ NIHSS ≤ 10). The investigators hypothesise that clopidogrel-aspirin treatment will be superior to aspirin monotherapy in this group of patients.

Timeline

Start

2016-11

Primary completion

2022-10-31

Completion

2022-10-31

Publications

• Background Wang Y, Wang Y, Zhao X, Liu L, Wang D, Wang C, Wang C, Li H, Meng X, Cui L, Jia J, Dong Q, Xu A, Zeng J, Li Y, Wang Z, Xia H, Johnston SC; CHANCE Investigators. Clopidogrel with aspirin in acute minor stroke or transient ischemic attack. N Engl J Med. 2013 Jul 4;369(1):11-9. doi: 10.1056/NEJMoa1215340. Epub 2013 Jun 26.
• Background Wong KS, Chen C, Fu J, Chang HM, Suwanwela NC, Huang YN, Han Z, Tan KS, Ratanakorn D, Chollate P, Zhao Y, Koh A, Hao Q, Markus HS; CLAIR study investigators. Clopidogrel plus aspirin versus aspirin alone for reducing embolisation in patients with acute symptomatic cerebral or carotid artery stenosis (CLAIR study): a randomised, open-label, blinded-endpoint trial. Lancet Neurol. 2010 May;9(5):489-97. doi: 10.1016/S1474-4422(10)70060-0. Epub 2010 Mar 22.
• Background Kennedy J, Hill MD, Ryckborst KJ, Eliasziw M, Demchuk AM, Buchan AM; FASTER Investigators. Fast assessment of stroke and transient ischaemic attack to prevent early recurrence (FASTER): a randomised controlled pilot trial. Lancet Neurol. 2007 Nov;6(11):961-9. doi: 10.1016/S1474-4422(07)70250-8. Epub 2007 Oct 10.
• Background Markus HS, Droste DW, Kaps M, Larrue V, Lees KR, Siebler M, Ringelstein EB. Dual antiplatelet therapy with clopidogrel and aspirin in symptomatic carotid stenosis evaluated using doppler embolic signal detection: the Clopidogrel and Aspirin for Reduction of Emboli in Symptomatic Carotid Stenosis (CARESS) trial. Circulation. 2005 May 3;111(17):2233-40. doi: 10.1161/01.CIR.0000163561.90680.1C. Epub 2005 Apr 25.
• Background Bhatt DL, Fox KA, Hacke W, Berger PB, Black HR, Boden WE, Cacoub P, Cohen EA, Creager MA, Easton JD, Flather MD, Haffner SM, Hamm CW, Hankey GJ, Johnston SC, Mak KH, Mas JL, Montalescot G, Pearson TA, Steg PG, Steinhubl SR, Weber MA, Brennan DM, Fabry-Ribaudo L, Booth J, Topol EJ; CHARISMA Investigators. Clopidogrel and aspirin versus aspirin alone for the prevention of atherothrombotic events. N Engl J Med. 2006 Apr 20;354(16):1706-17. doi: 10.1056/NEJMoa060989. Epub 2006 Mar 12.
• Background Diener HC, Bogousslavsky J, Brass LM, Cimminiello C, Csiba L, Kaste M, Leys D, Matias-Guiu J, Rupprecht HJ; MATCH investigators. Aspirin and clopidogrel compared with clopidogrel alone after recent ischaemic stroke or transient ischaemic attack in high-risk patients (MATCH): randomised, double-blind, placebo-controlled trial. Lancet. 2004 Jul 24-30;364(9431):331-7. doi: 10.1016/S0140-6736(04)16721-4.
• Cui Y, Kong XR, Zhang J, Chen HS. Residual early neurological deterioration following dual antiplatelet in stroke: post hoc analysis of the ATAMIS trial. Ther Adv Neurol Disord. 2026 Jun 24;19:17562864261461421. doi: 10.1177/17562864261461421. eCollection 2026.
• Yan HT, Cui Y, Li ZA, Cai JR, Wang Q, Hou XW, Chen HS. Effect of age on the efficacy and safety of clopidogrel plus aspirin vs aspirin alone in acute mild-to-moderate stroke: a secondary analysis of the ATAMIS trial. Front Neurol. 2025 Oct 27;16:1643517. doi: 10.3389/fneur.2025.1643517. eCollection 2025.
• Cui Y, Wang YH, Kong XR, Chen HS. Early Neurologic Deterioration and Efficacy of Dual Antiplatelet in Anterior Versus Posterior Circulation Stroke. J Am Heart Assoc. 2025 Feb 4;14(3):e037268. doi: 10.1161/JAHA.124.037268. Epub 2025 Jan 23.
• Cui Y, Liu QY, Chen HS. Dual Antiplatelet Therapy and Outcomes in Acute Mild to Moderate Stroke With Versus Without Large-Artery Atherosclerosis Post Hoc Analysis of ATAMIS. J Am Heart Assoc. 2024 Sep 17;13(18):e036318. doi: 10.1161/JAHA.124.036318. Epub 2024 Sep 9.
• Chen HS, Cui Y, Wang XH, Ma YT, Han J, Duan YJ, Lu J, Shen LY, Liang Y, Wang WZ, Wang H, Zhao Y, Zhang JT, Song YL, He XM, Li RH, Tao DB, Li J, Huang SM, Wang N, Hong M, Meng C, Zhang W, Wang DL, Nguyen TN; ATAMIS investigators. Clopidogrel Plus Aspirin vs Aspirin Alone in Patients With Acute Mild to Moderate Stroke: The ATAMIS Randomized Clinical Trial. JAMA Neurol. 2024 May 1;81(5):450-460. doi: 10.1001/jamaneurol.2024.0146.
• Hou X, Li X, Wang X, Chen H. Antiplatelet Therapy in Acute Mild-Moderate Ischemic Stroke (ATAMIS): a parallel, randomised, open-label, multicentre, prospective study. Stroke Vasc Neurol. 2018 Sep 23;3(4):263-267. doi: 10.1136/svn-2018-000148. eCollection 2018 Dec.

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