International journal of stroke : official journal of the International Stroke Society · 2019
The Acute Stroke or Transient Ischemic Attack Treated with Ticagrelor and Aspirin for Prevention of Stroke and Death (THALES) trial: Rationale and design.
СтатьяПоддержка исследования: вне правительства СШАПротокол клинического исследованияНазвание и аннотация: Перевод пока не подготовлен
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Johnston S Claiborne, Amarenco Pierre, Denison Hans, Evans Scott R, Himmelmann Anders, James Stefan, Knutsson Mikael, Ladenvall Per, Molina Carlos A, Wang Yongjun, THALES Investigators
Аннотация
RATIONALE: In patients with acute cerebral ischemia, the rate of stroke, myocardial infarction, or death during 90 days was reported to be non-significantly lower with ticagrelor compared with aspirin, with no increase in major hemorrhage. Dual antiplatelet therapy may be more effective in this setting.
AIM: To investigate whether ticagrelor combined with aspirin are superior to aspirin alone in preventing stroke or death in patients with non-severe, non-cardioembolic ischemic stroke or high-risk transient ischemic attack.
DESIGN: The Acute Stroke or Transient Ischemic Attack Treated with Ticagrelor and Aspirin for Prevention of Stroke and Death (THALES) trial is a randomized, placebo-controlled, double-blind, event-driven study. Patients will be randomized within 24 h of onset of acute ischemic symptoms. THALES is expected to randomize 13,000 at ∼450 sites worldwide, to collect 764 primary outcome events. Study treatments are ticagrelor 180 mg loading dose on day 1, then 90 mg twice daily on days 2-30, or matching placebo. All patients will also receive open-label aspirin 300-325 mg on day 1, then 75-100 mg once daily on days 2-30.
STUDY OUTCOMES: The primary efficacy outcome is time to the composite endpoint of stroke or death through 30-day follow-up. The primary safety outcome is time to first severe bleeding event.
DISCUSSION: The THALES trial will provide important information about the benefits and risks of dual antiplatelet therapy with ticagrelor and aspirin in patients with acute cerebral ischemia in a global setting (funding: AstraZeneca).
CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov . Unique identifier: NCT03354429.
AIM: To investigate whether ticagrelor combined with aspirin are superior to aspirin alone in preventing stroke or death in patients with non-severe, non-cardioembolic ischemic stroke or high-risk transient ischemic attack.
DESIGN: The Acute Stroke or Transient Ischemic Attack Treated with Ticagrelor and Aspirin for Prevention of Stroke and Death (THALES) trial is a randomized, placebo-controlled, double-blind, event-driven study. Patients will be randomized within 24 h of onset of acute ischemic symptoms. THALES is expected to randomize 13,000 at ∼450 sites worldwide, to collect 764 primary outcome events. Study treatments are ticagrelor 180 mg loading dose on day 1, then 90 mg twice daily on days 2-30, or matching placebo. All patients will also receive open-label aspirin 300-325 mg on day 1, then 75-100 mg once daily on days 2-30.
STUDY OUTCOMES: The primary efficacy outcome is time to the composite endpoint of stroke or death through 30-day follow-up. The primary safety outcome is time to first severe bleeding event.
DISCUSSION: The THALES trial will provide important information about the benefits and risks of dual antiplatelet therapy with ticagrelor and aspirin in patients with acute cerebral ischemia in a global setting (funding: AstraZeneca).
CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov . Unique identifier: NCT03354429.