Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 1 Month to 60

Treatment for Mitochondrial Depletion Syndrome in Children

Official title: A Phase II, Monocenter, Single Arm Study To Assess The Safety and Efficacy Of Combination Deoxycytidine and Deoxythymidine For Mitochondrial Depletion Disorders

Run by McGill University Health Centre/Research Institute of the McGill University Health Centre · NCT04802707 · Data updated 2026-11-12

This study is testing if a new treatment can help children with Mitochondrial Depletion Syndrome feel better and improve their brain function.

More Mitochondrial Diseases trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages1 Month to 60 Years
SexAll
Enrollment200 (estimated)
SponsorMcGill University Health Centre/Research Institute of the McGill University Health Centre
Academic / other
Locations1 site (Montreal, Quebec)
StatusRecruiting
StartedOctober 18, 2021
Main results expectedJune 30, 2029
Study endsDecember 30, 2029
Registry record updatedOctober 19, 2026
Trial IDNCT04802707 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are children and young adults aged 0 to 60 with a clinical diagnosis of a Mitochondrial Depletion Disorder and specific pathogenic gene variants.

Probably not a fit

Patients who are unable to provide informed consent or have chronic severe diarrhea 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 Phase II clinical trial evaluates the safety, tolerability, and efficacy of deoxycytidine and deoxythymidine in treating children with Mitochondrial Depletion Disorders. The study aims to assess neurological improvements through various clinical assessments, including EEG and quality of life measures. Participants will undergo comprehensive evaluations to monitor their clinical status and mitochondrial function. The trial is open-label and conducted at a single center.

Why it matters

Potential benefit: If successful, this treatment could provide a much-needed therapeutic option for children suffering from Mitochondrial Depletion Disorders.

How similar studies have gone: While there is limited existing treatment for Mitochondrial Depletion Disorders, previous studies have shown promise in enhancing mitochondrial function through similar approaches, making this trial a potentially significant advancement.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Children \& Adults (0 -60 Y)
* Written informed consent obtained,
* Clinical Diagnosis of a Mitochondrial Depletion Disorder.
* Pathogenic variant(s) Homozygote and Heterozygote in one of the following genes: POLG, POLG2, C10orf2, RRM2B, MPV17, SUCLA2, SUCLG1, FBXL4, DTYMK
* Females of childbearing age:

Negative urinary pregnancy test at screening Agree to use effective contraception for the duration of the study

Exclusion Criteria:

* Inability of a parent or legal guardian to give informed consent for any reason
* Chronic severe diarrhea

Where it's running

  • Research InstituMcGill University Health Centre - Children Hospital of Montreal
    Montreal, Quebec, Canada
    Recruiting

Study contacts

  • Principal investigator: Kenneth Alexis MD Myers, MD PhD FRCPC — RI-MUHC, Children Hospital of Montreal (MUHC), McGill University
  • Study coordinator: Kenneth Alexis MD Myers, MD PhD FRCPC
  • Email: kenneth.myers@mcgill.ca
  • Phone: 514-934-1934

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.