About this trial
The purpose of the study is to assess the efficacy, safety, and tolerability of zeleciment basivarsen (DYNE-101) for the treatment of myotonic dystrophy 1 (DM1).
Eligibility criteria
Qualifiers
Diagnosis of DM1 confirmed by molecular genetics with trinucleotide repeat size greater than (>) 100. Historical results from clinical testing are acceptable.
Able to walk 10 meters and complete 5 times sit to stand independently (inserts or supports that don't go above the ankle are allowed).
Body mass index (BMI) less than (<) 35 kilograms per meter square (kg/m²).
Disqualifiers
A known diagnosis of congenital DM1.
History of major surgical procedure (based on Investigator judgment) within 12 weeks prior to the start of screening, with the exception of implanted pacemaker or defibrillator.
Use of glucagon-like peptide 1 (GLP-1) agonist/incretin medications including semaglutide, dulaglutide, liraglutide, exenatide, or tirzepatide within a period of 5 half-lives of the medication prior to performing screening assessments.
Trial design
Treatments tested in this trial
- zeleciment basivarsen (DYNE-101)
- Placebo