New hope for DM1: Long-Term trial of AOC 1001 underway
NCT ID NCT07008469
First seen Jun 27, 2026 · Last updated Aug 20, 2026 · Updated 4 times
Summary
This phase 3 study is testing the long-term safety and effectiveness of an experimental drug called AOC 1001 (del-desiran) for people with myotonic dystrophy type 1 (DM1), a genetic muscle disorder. The trial enrolls 230 adults who have completed a prior AOC 1001 study and will receive the drug by IV infusion. Researchers will monitor side effects and how well the drug works over time.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- AOC 1001 (del-desiran)
- What this could lead to
- If successful, this could confirm AOC 1001 as a long-term treatment option to manage symptoms and slow progression of myotonic dystrophy type 1.
- What could go wrong
- This is an open-label extension study, so there is no placebo group for comparison. Long-term safety and effectiveness are still being evaluated, and results may not apply to all patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 199 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Oct 2030
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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16 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
FROM A PARENT STUDY Key Inclusion Criteria: * Completion of any prior AOC 1001 studies with satisfactory completion of dosing and follow-up assessments and satisfactory compliance with the protocol requirements of the parent study, as determined by the Investigator. Key Exclusion Criteria: * Breastfeeding, pregnancy, or intent to become pregnant during the study. * Unwilling to comply with contraceptive requirements. * Any new conditions or worsening of existing condition that in the opinion of the Investigator would make the participant unsuitable for the study. FIXED-DOSE PK COHORT Key Inclusion Criteria: * Clinical and genetic diagnosis of DM1 and clinically significant hand myotonia. Key Exclusion Criteria: * Breastfeeding, pregnancy, or intent to become pregnant during the study * Unwilling to comply with contraceptive requirements * Abnormal lab values, conditions or diseases that would make the participant unsuitable for the study * Diabetes that is not adequately controlled * History of decompensated heart failure within 3 months of screening. Participants with preexisting pacemaker/ICD are not excluded * Body Mass Index \> 35 kg/m2 at Screening * Recently treated with an investigational drug or biological agent Note: Additional protocol defined Inclusion and Exclusion criteria apply
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
35 sites in 10 countries. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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AP-HP Hopital Pitie-Salpetriere
Paris, 75013, France
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Aarhus University Hospital
Aarhus, 8200, Denmark
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Aomori Hospital
Aomori, Aomori, 038-1331, Japan
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Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02215, United States
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Duke University Medical Center
Durham, North Carolina, 27708, United States
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Fondazione Serena Onlus - Centro Clinico NeMO Milano
Milan, 20162, Italy
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Hospital Universitario Donostia
San Sebastián, 20014, Spain
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Houston Methodist Neurological Institute
Houston, Texas, 77030, United States
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Indiana University (IU)
Indianapolis, Indiana, 46202, United States
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Kansas University Medical Center
Kansas City, Kansas, 66205, United States
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Kennedy Krieger Institute
Baltimore, Maryland, 21205, United States
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Klinikum der Ludwig-Maximilians-Universitaet Muenchen
München, 80336, Germany
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Maastricht University Medical Center
Maastricht, 6229 HX, Netherlands
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Montreal Neurological Institute
Montreal, Quebec, H3A 2B4, Canada
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National Center of Neurology and Psychiatry
Tokyo, 187-8551, Japan
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National Hospital Organization Osaka Toneyama Medical Center
Osaka, 560-8552, Japan
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Ohio State University
Columbus, Ohio, 43221, United States
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Osaka University Hospital
Osaka, 565-0871, Japan
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Rigshospitalet
Copenhagen, 2100, Denmark
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St. Georges University Hospitals NHS Foundation Trust
London, SW17 0QT, United Kingdom
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Stanford University
Stanford, California, 94305, United States
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Stichting Radboud Universitair Medisch Centrum
Nijmegen, 6525 GA, Netherlands
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The Ottawa Hospital
Ottawa, Ontario, K1Y 4E9, Canada
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University College London Hospital
London, NW1 2BU, United Kingdom
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University Research Center of South Florida
Tampa, Florida, 33612, United States
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University of California, Los Angeles (UCLA)
Los Angeles, California, 90095, United States
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University of Cincinnati Gardner Neuroscience Institute
Cincinnati, Ohio, 45219, United States
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University of Colorado
Denver, Colorado, 80045, United States
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University of Florida
Gainesville, Florida, 32608, United States
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University of Minnesota
Minneapolis, Minnesota, 55455, United States
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University of Pennsylvania
Philadelphia, Pennsylvania, 19104, United States
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University of Rochester Medical Center
Rochester, New York, 14642, United States
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University of Washington
Seattle, Washington, 98104, United States
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Virginia Commonwealth University
Richmond, Virginia, 23298, United States
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Wake Forest
Winston-Salem, North Carolina, 27157, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a Muscle-Relaxing drug offer Long-Term relief for children with myotonia?
- Can a wakefulness drug combat the crushing fatigue of myotonic dystrophy?
- Can we measure the progression of childhood myotonic dystrophy well enough to test new therapies?
- Can watching the course of myotonic dystrophy unlock better care?
- Scientists hunt for biomarkers to unlock DM1 treatments
- Could virtual reality help kids with a rare muscle disease read emotions better?