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Episodic Migraine clinical trials

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

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NCT ID: NCT01257893 Withdrawn - Chronic Migraine Clinical Trials

Aspirin Resistance in Women With Migraine

ARWM

Start date: November 2010
Phase: N/A
Study type: Interventional

The purpose of this study is to compare the rates of aspirin resistance (high residual platelet reactivity) between women with episodic and chronic migraine and women without migraine. Emerging evidence suggests that migraineurs, especially women < 45 years who have aura, have an increased risk of stroke and myocardial infarction (MI, or heart attack). The mechanism linking migraine, stroke and MI is unclear although increased platelet activation and aggregation observed during and between migraine attacks may be a plausible theory. Aspirin is an inexpensive, relatively safe antiplatelet drug that reduces the risk of stroke and MI. Preliminary data suggest that aspirin's (325mg) therapeutic effect on platelet inhibition may be reduced in migraineurs (i.e., aspirin resistance), thus limiting aspirin's effectiveness at preventing stroke and MI risks in persons with migraine. Additional research is warranted to confirm these findings in migraineurs because daily, low-dose aspirin 81 mg is the recommended first line therapy for primary and secondary prevention of stroke and MI The researchers hypothesize that resistance to aspirin 81mg may occur more frequently in women with episodic and chronic migraine than in women without migraine. The findings may have important implications for women who have migraine and use aspirin to prevent migraine symptoms or comorbidities associated with migraine including stroke and MI.