Clinical trial Recruiting at 1 site Interventional Ages 18 to 85

Infusing healthy mitochondria to treat cerebral ischemia

Official title: Study Title: Autologous Mitochondrial Transplant for Cerebral Ischemia

Run by University of Washington · NCT04998357 · Data updated 2026-11-12

This study is testing whether infusing healthy mitochondria into the brain can help patients with reduced blood flow during a specific treatment for stroke.

Quick facts

Study typeInterventional
Ages18 Years to 85 Years
SexAll
Enrollment20 (estimated)
SponsorUniversity of Washington
Academic / other
Locations1 site (Seattle, Washington)
StatusRecruiting
StartedApril 29, 2021
Main results expectedApril 29, 2026
Study endsOctober 29, 2026
Registry record updatedMay 21, 2025
Trial IDNCT04998357 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients eligible for endovascular thrombectomy to treat acute large vessel occlusion.

Probably not a fit

Patients with known mitochondrial diseases or those who are hemodynamically unstable may not benefit from this study.

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

What this trial studies

This study aims to infuse healthy autologous mitochondria into the cerebral vessels of patients experiencing ischemia during standard endovascular reperfusion therapy. The approach is based on preclinical evidence suggesting that mitochondrial damage caused by ischemia can be reversed with such infusions. The trial will assess the safety and feasibility of this novel intervention in human subjects, specifically targeting those eligible for endovascular thrombectomy. The procedure will be conducted concurrently with clinically indicated treatments for acute large vessel occlusion.

Why it matters

Potential benefit: If successful, this approach could significantly improve recovery outcomes for patients suffering from ischemic strokes.

How similar studies have gone: Other studies have shown success with similar mitochondrial transplantation approaches in heart conditions, indicating potential for this novel application in the brain.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Eligible for endovascular thrombectomy to treat acute large vessel occlusion
* Eligible for angioplasty (microcatheter-based balloon/mechanical and chemical angioplasty) to treat acute cerebral vasospasm after aneurysmal subarachnoid hemorrhage
* Subjects for whom there is likely to be enough time to obtain meaningful consent from patient or legally-authorized representative

Exclusion Criteria:

* Unable to receive a brain MRI scan
* Known mitochondrial disease
* Hemodynamically unstable patients in whom standard of care endovascular reperfusion treatment cannot safely be performed or completed

Where it's running

  • Harborview Medical Center
    Seattle, Washington, United States
    Recruiting

Study contacts

  • Principal investigator: Melanie S Walker, MD — University of Washington
  • Study coordinator: Study Coordinator
  • Email: sanslab@uw.edu
  • Phone: 206-897-5802

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.