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Study identifier: NCT05295433 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

An Extension Study to Evaluate the Long-Term Safety and Clinical Activity of mRNA-3705 in Participants Previously Enrolled in Other Clinical Studies of mRNA-3705

Condition: Methylmalonic Acidemia  ·  Sponsor: ModernaTX, Inc.

PhasePhase 1/Phase 2
Planned participants56
Who can joinAll sexes, 1 Year to no upper limit
Healthy volunteersNo

About this study

The primary objective of this study is to evaluate the long-term safety and clinical activity of mRNA-3705 administered to participants with isolated methylmalonic acidemia (MMA) due to methylmalonyl-coenzyme A mutase (MUT) deficiency who have previously participated in other clinical studies of mRNA-3705.

This description comes directly from the study's public registry record.

Talk to the study team

Moderna WeCare Team  ·  1-866-663-3762  ·  WeCareClinicalTrials@modernatx.com

Always discuss trial participation with your own doctor first.

Locations (12)

UCLA Medical CenterLos Angeles, California, United StatesRecruiting
Lucile Packard Children's Hospital at StanfordPalo Alto, California, United StatesRecruiting
Altman Clinical and Translational Research InstitutionSan Diego, California, United StatesRecruiting
Stollery Children's Hospital University of AlbertaEdmonton, Alberta, CanadaRecruiting
Hospital For Sick ChildrenToronto, Ontario, CanadaRecruiting
Hôpital Necker - Enfants Malades APHPParis, FranceRecruiting
Erasmus MCRotterdam, NetherlandsRecruiting
Universitair Medisch Centrum UtrechtUtrecht, NetherlandsRecruiting
Hospital Universitario CrucesBarakaldo, Vizcaya, SpainRecruiting
Hospital Universitario 12 de OctubreMadrid, SpainRecruiting
Birmingham Children's Hospital NHS Foundation TrustBirmingham, United KingdomTerminated
Royal Manchester Childrens HospitalManchester, United KingdomRecruiting

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Source record: clinicaltrials.gov/study/NCT05295433