Clinical trial Recruiting at 1 site Interventional Ages 18 to 65

Comparing biodegradable versus metal PFO occluders for people with migraine

Official title: A Comparison of Biodegradable and Metal Occluders in Patients With PFO and Migraine

Run by Chinese Academy of Medical Sciences, Fuwai Hospital · NCT06203873 · Data updated 2026-11-12

We will test whether a biodegradable heart occluder works better than a metal occluder to reduce migraine symptoms in adults with a patent foramen ovale.

Quick facts

Study typeInterventional
Ages18 Years to 65 Years
SexAll
Enrollment400 (estimated)
SponsorChinese Academy of Medical Sciences, Fuwai Hospital
Academic / other
Locations2 sites (Beijing, Beijing Municipality and 1 other locations)
StatusRecruiting
StartedMarch 1, 2024
Main results expectedMarch 1, 2026
Study endsMarch 1, 2026
Registry record updatedDecember 4, 2025
Trial IDNCT06203873 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–65 with ICHD-3–diagnosed migraine for over one year, a confirmed PFO with right-to-left shunt, substantial daily-life impact, and inadequate response to at least three preventive migraine medications.

Probably not a fit

People whose migraines have a clear non-PFO cause, those with prior TIA or stroke, or patients contraindicated for antiplatelet/anticoagulation or PFO closure are unlikely to benefit from this procedure.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults with migraine and a confirmed right-to-left patent foramen ovale who have not adequately responded to preventive medications will be enrolled. Participants will undergo percutaneous closure using either a biodegradable occluder or a conventional metal occluder and will be followed to track migraine frequency, severity, and device-related safety outcomes. Imaging such as transesophageal echocardiography and transcranial Doppler will confirm PFO and device position, and follow-up visits will monitor migraine calendars and any complications. Outcomes will compare change in monthly migraine days and adverse events between the two device groups to see if the biodegradable device offers similar or superior migraine relief and safety.

Why it matters

Potential benefit: If successful, a biodegradable occluder could lower monthly migraine days and reduce long-term device-related issues compared with metal devices.

How similar studies have gone: Prior observational studies and randomized trials of metal PFO occluders, including PRIMA and PREMIUM and pooled analyses of the Amplatzer device, have reported reductions in migraine days or benefits on secondary endpoints, while biodegradable occluders remain newer and less well tested for migraine outcomes.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age 18-65
2. Diagnosed migraine by ICHD-3
3. History of migraine longer than 1 year, and symptoms severely disturbing daily life.
4. TCD/TTE/TEE diagnosed patent foramen ovale with right to left shunt
5. Willing to participant and agree to follow-ups
6. Received at least three different types of migraine preventive drugs, the responder rate of previous therapy did not receive 50%.

Exclusion Criteria:

1. Migraine caused by other reason
2. Had TIA/stroke history
3. With contraindication or hypersensitive to anti-platelet or anticoagulation drugs.
4. With contraindication to PFO occlusion

Where it's running

  • Fuwai Hospital
    Beijing, Beijing Municipality, China
    Recruiting
  • Fuwai Hospital
    Beijing, Beijing Municipality, China
    Not yet recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.