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NCT07775872Recruiting

Prospective Natural History Study of POLG Disease

The POLG Foundation

Start Date

6/17/2026

Completion Date

6/17/2031

Summary

The PIONEER study is a prospective, natural history study dedicated to characterizing the clinical progression of POLG-related disorders. The research aims to bridge the gap between genetic diagnosis and drug development by mapping how these rare mitochondrial conditions evolve over time. By observing the disease's natural trajectory through a multi-center approach, The study identifies critical clinical milestones that serve as a foundation for evaluating therapeutic efficacy and future therapeutic interventions

Detailed Description

This is a multi-centre, Multi-country Prospective Observational Natural History study designed to bridge the gap between genetic diagnosis and therapeutic development for POLG-related disorders. These mitochondrial conditions are rare. This study utilizes a prospective, longitudinal design which allows researchers to track the "phenotypic evolution" of the disease over several years, providing the high-quality baseline data that regulatory agencies like the FDA require to evaluate the success of future drug interventions. clinical parameters such as the Newcastle Mitochondrial Disease Scale (NMDAS) for multi-system involvement, the SARA scale for ataxia, and functional tests like the Nine-Hole Peg Test for motor dexterity, alongside fluid biomarkers including GDF-15 and FGF-21 are conducted to validate clinical endpoints throughout the study duration. inclusion criteria require participants of any age to have a genetically confirmed POLG-related disorder with documented pathogenic variants, as well as the ability to comply with longitudinal follow-up assessments over 3 years. This rigorous framework allows researchers to correlate specific genetic mutations with objective clinical milestones, providing the necessary baseline data to evaluate the efficacy of future therapeutic interventions.

Eligibility Criteria

Age Range: No minimum to No maximum

Inclusion Criteria: * male \& female from age 0 to 75. * A genetically confirmed POLG -associated disorder based on both phenotype and genotype is required. * Parental/guardian permission (informed consent) and if appropriate with child assent. Exclusion Criteria: * Diagnosis of mitochondrial disorder other than POLG * Subject with POLG Variant of unknown significance or benign variant. * Parents/guardians or subjects who, in the opinion of the investigator, may be non-compliant with the study schedules or procedures. * Subjects unable or unwilling to provide informed consent. * History of or current clinically important condition other than what is related to the PMD which, in the opinion of the Investigator will confound the results of the NHS.

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Conditions

PolG, Primary Mitochondrial Myopathy

Locations

University of California San Diego

San Diego, California 92121

United States

Children's Hospital Colorado

Aurora, Colorado 80045

United States

Columbia University Irving Medical Center

New York, New York 10032

United States

Akron Children's Hospital

Akron, Ohio 44308

United States

Children's Hospital of Philadelphia-Philadelphia

Philadelphia, Pennsylvania 19104

United States

Baylor Hospital

Dallas, Texas 75246

United States

UTHealth Houston

Houston, Texas 77030

United States

Prince of Wales Hospital, Sydney

Sydney, New South Wales 2031

Australia

Copenhagen University Hospital- Copenhagen

Copenhagen, Capital Region of Denmark 2100

Denmark

Children's Hospital, Helsinki University Hospital-Helsinki

Helsinki, Uusimaa 00290

Finland

Oulu University Hospital-Oulu

Helsinki, Uusimaa 00290

Finland

Maastricht University-Maastricht

Maastricht, Limburg 6200 MD Maastricht

Netherlands

Oslo University Hospital

Oslo, Oslo 0424

Norway

University Hospital of North Norway - Tromsø

Tromsø, Troms 9019

Norway

St. Olav's Hospital-Trondheim

Trondheim, Trøndelag 7030

Norway

Haukeland University Hospital-Bergen

Bergen, Vestland 5009

Norway

Hospital 12 de Octubre- Madrid

Madrid, Madrid 28041

Spain

Karolinska University Hospital

Solna, Stockholm County 171 76

Sweden

The Queen Silvia Children's Hospital, University of Gothenburg

Gothenburg, Västra Götaland County 416 50

Sweden

Addenbrooke's Hospital, Cambridge University Hospitals

Cambridge, Cambridgeshire CB2 0QQ

United Kingdom

Great Ormond Street Hospital

London, Central London WC1N 1EH

United Kingdom