Del-brax (AOC 1020) intravenous treatment for people with FSHD
Official title: A Randomized, Double-blind, Placebo-controlled, Phase 3 Study to Evaluate the Efficacy and Safety of Intravenous AOC 1020 for the Treatment of Facioscapulohumeral Muscular Dystrophy (FSHD)
Run by Avidity Biosciences, Inc. · NCT07038200 · Data updated 2026-11-12
This study will try regular IV infusions of del-brax (AOC 1020) in adults with FSHD to see if it slows muscle weakness and helps preserve walking ability.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 16 Years to 70 Years |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | Avidity Biosciences, Inc. Industry-sponsored |
| Locations | 46 sites (Orange, California and 45 other locations) |
| Status | Recruiting |
| Started | June 10, 2025 |
| Main results expected | May 2028 |
| Study ends | July 2028 |
| Registry record updated | July 27, 2026 |
| Trial ID | NCT07038200 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with a clinical and genetic diagnosis of FSHD1 or FSHD2 who can walk independently for at least 10 meters and meet the study's muscle strength and safety criteria are ideal candidates.
✕Probably not a fit
People who cannot walk independently for 10 meters, who have disqualifying lab abnormalities, are pregnant or breastfeeding, or who recently received other oligonucleotide therapies 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 is a randomized, double-blind, placebo-controlled Phase 3 trial testing intravenous del-brax (AOC 1020) given every 6 weeks for 72 weeks (13 doses) after up to 6 weeks of screening. Participants are randomized to del-brax or placebo and undergo clinical assessments through a final visit at Week 78, with eligible participants offered an open-label extension thereafter. Safety and tolerability will be reviewed periodically by an independent data monitoring committee. The study includes on-site IV infusions and functional outcome measures, and excludes people with recent oligonucleotide treatment or certain abnormal labs or blood pressure.
Why it matters
Potential benefit: If successful, del-brax could slow disease progression and help maintain muscle strength and walking function in people with FSHD.
How similar studies have gone: Early-phase work with del-brax and other antibody-oligonucleotide conjugates has shown preliminary safety and target engagement, but large Phase 3 proof of clinical benefit in FSHD has not yet been established.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Clinical and genetic diagnosis of FSHD1 or FSHD2 * Ability to walk independently at pre-specified walking speed (orthoses and ankle braces allowed) for at least 10 meters at screening * Adequate muscle strength based on QMT composite score Exclusion Criteria: * Breastfeeding, pregnancy, or intent to become pregnant during the study * Unwilling or unable to comply with contraceptive requirements * Abnormal lab values, conditions or diseases that would make the participant unsuitable for the study * Blood Pressure \> 140/90 mmHg at Screening * Treatment with another investigational drug or biological agent within 1 month of Screening or 5 half-lives of the drug, whichever is longer * Treatment with an oligonucleotide within 9 months of Screening
Where it's running
-
University of Calgary - Cumming School of Medicine
Calgary, Alberta, Canada Recruiting -
University of Alberta Hospital
Edmonton, Alberta, Canada Recruiting -
The Ottawa Hospital
Ottawa, Ontario, Canada Recruiting -
Genge Partners Inc
Montreal, Quebec, Canada Recruiting -
Rigshospitalet
Copenhagen, Denmark Recruiting -
AP-HP Hopital Pitie-Salpetriere
Paris, France Recruiting
Show 40 more locations
-
Universitaetsklinikum Bonn
Bonn, Germany Recruiting -
Georg-August-Universitaet Goettingen Stiftung oeffentlichen Rechts Universitaetsmedizin Goettingen
Göttingen, Germany Recruiting -
Klinikum der Ludwig-Maximilians-Universitaet Muenchen
München, Germany Recruiting -
Universitaetsklinikum Ulm
Ulm, Germany Recruiting -
Fondazione Serena ETS - Centro Clinico NeMO Milano
Milan, Italy Recruiting -
Azienda Ospedaliero Universitaria Pisana
Pisa, Italy Recruiting -
Azienda Ospedaliero-Universitaria Sant'Andrea
Roma, Italy Recruiting -
Fondazione Policlinico Universitario A. Gemelli IRCCS - Universita Cattolica del Sacro Cuore
Roma, Italy Recruiting -
National Hospital Organization Osaka Toneyama Medical Center
Osaka, Japan Recruiting -
The University of Osaka Hospital
Osaka, Japan Recruiting -
National Hospital Organization Sendai Nishitaga Hospital
Sendai, Japan Recruiting -
National Center of Neurology and Psychiatry
Tokyo, Japan Recruiting -
Academisch Ziekenhuis Leiden
Leiden, Netherlands Recruiting -
Stichting Radboud Universitair Medisch Centrum
Nijmegen, Netherlands Recruiting -
Hospital Universitari de Bellvitge
Barcelona, Spain Recruiting -
Hospital Universitario Vall d'Hebron
Barcelona, Spain Recruiting -
Hospital Universitario Donostia
San Sebastián, Spain Recruiting -
Hospital Universitari i Politecnic La Fe
Valencia, Spain Recruiting -
National Hospital for Neurology & Neurosurgery
London, United Kingdom Recruiting -
St. George's University Hospitals NHS Foundation Trust
London, United Kingdom Recruiting -
Royal Victoria Infirmary
Newcastle upon Tyne, United Kingdom Recruiting -
Royal Hallamshire Hospital
Sheffield, United Kingdom Recruiting -
University of California Irvine
Orange, California, United States Active not recruiting -
Stanford University
Palo Alto, California, United States Active not recruiting -
University of Colorado
Denver, Colorado, United States Active not recruiting -
University of Florida
Gainesville, Florida, United States Active not recruiting -
University of Iowa
Iowa City, Iowa, United States Active not recruiting -
Kansas University Medical Center
Kansas City, Kansas, United States Active not recruiting -
Kennedy Krieger Institute
Baltimore, Maryland, United States Active not recruiting -
University of Massachusetts
Worcester, Massachusetts, United States Active not recruiting -
University of Rochester Medical Center
Rochester, New York, United States Active not recruiting -
Duke University
Durham, North Carolina, United States Active not recruiting -
Ohio State University
Columbus, Ohio, United States Active not recruiting -
University of Pennsylvania
Philadelphia, Pennsylvania, United States Active not recruiting -
University of Texas Health Science Center at San Antonio
San Antonio, Texas, United States Active not recruiting -
Virginia Commonwealth University
Richmond, Virginia, United States Active not recruiting -
Aarhus University Hospital
Aarhus, Denmark Not yet recruiting -
Centre de Reference des Maladies Neuromusculaires et de la SLA - AP-HM Hopital de La Timone
Marseille, France Not yet recruiting -
CHU de Montpellier - Hopital Gui de Chauliac
Montpellier, France Not yet recruiting -
CHU de Nice - Hopital Pasteur 2 - Centre de reference des Maladies Neuromusculaires
Nice, France Not yet recruiting
Study contacts
- Study coordinator: Avidity Biosciences, Inc., A Novartis Company
- Email: novartis.email@novartis.com
- Phone: 1-888-669-6682
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
BetterLife FSHD: a patient-driven health platform
This project tries to connect people with FSHD to personalized resources and collect their health experiences so they can be matched to relevant studies and help improve care.
-
Apitegromab for FSHD in Adults (Phase 2)
This study tests whether apitegromab works as a standalone treatment for adults with FSHD.
-
Assessing respiratory function in FSHD patients using diaphragmatic ultrasound
This study is testing how well diaphragmatic ultrasound can track changes in breathing function over a year in people with Facioscapulohumeral Muscular Dystrophy (FSHD).
-
Amino acids plus diet and exercise for people with FSHD
This trial will test whether taking essential amino acid supplements together with a structured diet and exercise program helps adults with FSHD build muscle, reduce fat, and improve physical performance compared with placebo and matched healthy adults.
-
Wearable monitoring of walking and arm movement in adults with neuromuscular or metabolic movement disorders
This project uses a wrist/ankle wearable to continuously monitor walking and upper-limb movement in ambulant adults with neuromuscular diseases or obesity to see if digital measures like stride speed track real-life motor function.
-
Umbilical cord lining stem cell treatment for FSHD
This trial will try two intravenous doses of umbilical cord lining–derived stem cells (ULSC) versus placebo to see if they are safe and help people aged 15+ with genetically confirmed FSHD and moderate disease (Ricci score ≥3).
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.