Condition
Mitochondrial Diseases clinical trials and research
As of November 12, 2026, Find a Trial lists 17 Mitochondrial Diseases clinical trials that are recruiting, at sites in 15 countries (most in United States (7), Germany (4), France (4)). By phase: Phase 2 (3), Phase 1 (2), Phase 3 (1). The most active sponsors are Centre Hospitalier Universitaire de Nice (2), Children's Hospital of Philadelphia (2). There are also 7 NIH-funded research projects on Mitochondrial Diseases, with $4.6 million in listed awards. Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 17Clinical trials
- 7NIH research projects
- 15Countries
Newest Mitochondrial Diseases clinical trials
All recruiting trials (17)
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Metabolic and Functional Study of γδ T Cells in Critically Ill Patients
Researchers will look at how γδ T cells behave in severely ill patients, including those with sepsis, to see how their metabolism and function change.
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Open-label extension to test KL1333 long-term safety and benefit for primary mitochondrial disease
This extension study will see if KL1333 can be safely used long-term and whether it helps reduce fatigue and improve daily living in adults with primary mitochondrial disease who previously took KL1333 or placebo.
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One-leg exercise training to improve muscle energy and function in adults with mitochondrial myopathy
This project tests whether a short program of one-leg high-intensity interval exercise changes muscle energy production and molecular signals in adults with mitochondrial myopathy compared with healthy adults.
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Using transcriptomic analysis to diagnose mitochondrial diseases
This study is testing a new way to diagnose mitochondrial diseases by looking at gene activity in patients' cells to help those who haven't been diagnosed yet.
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Observing the natural history of mitochondrial diseases
This study is tracking 400 people with mitochondrial diseases and 100 healthy individuals over 10 years to see how the disease affects them and to help improve future diagnosis and treatment.
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Sonlicromanol for symptoms of primary mitochondrial disease due to the m.3243A>G mutation
This will test whether taking sonlicromanol twice daily for one year can reduce fatigue and improve balance and leg strength in adults with the m.3243A>G mitochondrial mutation.
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Transplantation of MNV-201 for treating Pearson Syndrome in children
This study is testing a new cell therapy called MNV-201 to see if it can help children with Pearson Syndrome feel better and manage their symptoms.
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Understanding how diabetes affects heart function
This study looks at how diabetes affects heart function by testing heart tissue from patients with heart failure and type 2 diabetes to learn more about the connection between the two conditions.
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Effects of passive exercise on mitochondrial diseases
This study is testing how different types of exercise, including passive exercise, affect people with mitochondrial diseases compared to healthy individuals.
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Global registry for mitochondrial disorders
This study is creating a global database for mitochondrial disorders to help understand these diseases better and improve future treatments for patients.
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Using multi-omics to diagnose mitochondrial diseases
This study is testing a new way to diagnose mitochondrial diseases by looking closely at RNA from muscle and skin samples of patients who have had unclear genetic test results.
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Treatment for Mitochondrial Depletion Syndrome in Children
This study is testing if a new treatment can help children with Mitochondrial Depletion Syndrome feel better and improve their brain function.
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Identifying metabolic and immune biomarkers in neurological disorders
This study is trying to see if measuring mitochondrial function can help identify children with neurological disorders like autism and epilepsy.
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18-month developmental follow-up after mitochondrial donation
This project looks to see if children born after mitochondrial donation show typical neurodevelopment at 18 months using a standard developmental test.
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Measuring oxygen levels in muscle for mitochondrial myopathy
This study is testing a new device that measures oxygen levels in muscles during exercise to see if it can help understand how mitochondrial myopathy affects patients and improve future treatments.
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Registry for patients with rare diseases
This study is creating a central registry for people with rare diseases to help connect them with researchers and improve treatments.
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Registry and biorepository for patients with mitochondrial disorders
This study is creating a database and collection of samples from people with mitochondrial disorders to help researchers learn more about these conditions and improve treatments.
NIH-funded research (7)
Early-stage science funded by the US National Institutes of Health. Most of these projects don't enroll patients, but they show what is being worked on.
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Emerging therapies for rare maternal mitochondrial diseases with shared causes
A basket clinical trial will test new drug candidates for two ultra-rare mitochondrial diseases (MELAS and LHON-Plus) that share the same underlying energy-making problem in people who could be affected.
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Drosophila models to study human mitochondrial diseases
A scientist at Harvard Medical School is creating fly-based tools to study how mitochondrial problems cause human diseases.
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First MTATP6 mitochondrial disease mouse model and AAV-based gene therapy approach
A new grant aims to create a mouse model of MTATP6 mitochondrial disease and test an AAV-based gene therapy approach to treat it.
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New treatments for maternally inherited mitochondrial diseases MELAS and LHON-Plus
New drug candidates aim to boost cellular energy for people with MELAS or LHON-Plus, rare maternally inherited mitochondrial diseases.
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Developing a gene therapy for mitochondrial diseases using a mouse model
This study is working on a new way to help people with mitochondrial diseases caused by a specific gene problem by using a special virus to deliver a healthy version of that gene, which could lead to better treatments for those affected.
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New treatments for rare mitochondrial diseases passed from mother to child
This study is looking for new treatment options for people with two rare inherited mitochondrial diseases, MELAS and LHON-Plus, which cause serious health issues, and it aims to see if a shared treatment can help both groups of patients feel better.
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Using fruit flies to study human mitochondrial diseases
This study is looking at how mitochondrial diseases work by using fruit flies to learn more about the problems they cause, which can lead to muscle weakness and organ issues, and it aims to find new ways to detect and treat these conditions.
Related topics
Quick answers
How many Mitochondrial Diseases clinical trials are recruiting right now?
17, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 15 countries. The most sites are in United States (7 trials), Germany (4 trials), France (4 trials), Italy (3 trials), Denmark (3 trials). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 3, Phase 1: 2, Phase 3: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.