Clinical Trials

Inclusion Criteria:

- Clinical diagnosis of acute ischemic stroke in anterior circulation, supported by
acute brain computed tomography (CT) or magnetic resonance imaging (MRI) consistent
with the clinical diagnosis.

- Able to randomize within 23 hours of last known normal.

- National Institute of Health Stroke Scale (NIHSS) total score of 7 to 21, inclusive.

- Participants or their legally authorized representative confirms that prior to index
stroke, no significant impairment in participant's ability to perform activities of
daily living without assistance.

Exclusion Criteria:

- Evidence of severe stroke on imaging based on available acute imaging studies
performed under the standard of care.

- Evidence of seizure at the onset of index stroke.

- Evidence of acute myocardial infarction.

- Symptoms are considered likely to resolve within the subsequent few hours (e.g.,
transient ischemic attack [TIA]).

- Known history prior to randomization of clinically significant medical conditions
(other than current acute ischemic stroke) or any other reason, including any
physical, psychological, or psychiatric condition that in the investigator's opinion
would compromise the safety or interfere with the participant's participation in this
study.

- Known medical history of repeated episodes of complex migraine. Participants with
history of complex migraine, but with imaging conclusively demonstrating an acute
ischemic stroke are still allowed.

- Female who is pregnant, breastfeeding, or considering becoming pregnant during the
study or for within 39 weeks (5 half-lives) after the last dose of study drug.

- Known receipt of any investigational product within 30 days or 5 half-lives of the
drug (whichever is longer) prior to the first dose of study drug. No current
enrollment in another interventional clinical study, including pharmacologic and
behavioral interventional studies.