HealthBrief
FDA approves Sunharbo for stroke prevention in certain adults
The November 9 approval combines asundexian with antiplatelet therapy for a defined population; the FDA also reported bleeding risks in the trial.

The numbers
- Ischemic stroke risk with Sunharbo versus placebo; both groups received antiplatelet therapy
- 26 percent relative reduction
- Participants in the FDA-described randomized phase 3 study
- 12,327 adults
The Food and Drug Administration approved Sunharbo (asundexian) on November 9 to reduce stroke risk in a defined group of adults, when used with antiplatelet therapy.
The FDA said the approval applies after a recent mild-to-moderate non-cardioembolic ischemic stroke or a high-risk transient ischemic attack. It does not approve the drug for stroke prevention in patients with atrial fibrillation.
In a randomized, double-blind trial of 12,327 adults, the agency reported a 26% relative reduction in ischemic stroke risk with Sunharbo compared with placebo over a median 14.2 months of treatment. Both groups received antiplatelet therapy.
Overall major bleeding rates were similar between groups, the FDA said. Major bleeding was higher with Sunharbo among patients older than 75; it was also higher during the first 90 days of treatment. Gastrointestinal bleeding was more common with Sunharbo than placebo.
Cardiologist Richard Kovacs told Fox News that the medicine does not eliminate the risk of another stroke. He also distinguished patients whose strokes stem from atrial fibrillation or heart-valve problems from those for whom the treatment is intended.
What we don't know yet
- How will longer follow-up change understanding of benefits and bleeding risks?
- What will further studies show in groups underrepresented in the trial?
Timeline
The FDA announced approval of Sunharbo for the specified adult population in combination with antiplatelet therapy.
Fox News published its report, including an interview with cardiologist Richard Kovacs.
Sources cited
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