Myotonic Dystrophy Type 1 Dm1

Myotonic Dystrophy type 1 (DM1) is an autosomal dominant multisystemic disorder that causes progressive disability and shortened life expectancy. It is characterized by progressive weakness and myotonia, which preferentially affects the craniofacial, hand, and distal leg muscles. Many patients also experience difficulties with cognition, cardiac arrhythmias, respiratory failure, or cataracts. Currently there is no treatment to slow progression or reverse the symptoms.

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).

The goal of this study is to investigate the effects of personalized exercise treatment on dynamic balance and physical function in comparison with regular follow-up in adults with rare-neuromuscular disorders: Charcot-Marie-Tooth (CMT), Facioscapulohumeral Muscular Dystrophy (FSHD), and Myotonic Dystrophy Type 1 (DM1). The key objectives are: 1. To investigate if the intervention group experiences improvements in dynamic balance that are superior to the control group 2. To investigate if the intervention group experiences long-term improvements in dynamic balance that are superior to the control group during the follow-up 3. To investigate if improvements in dynamic balance are associated with improvements in physical activity, body composition, estimated motor units, metabolomics, muscle echnogenecity and volume, and other indicators of health and quality of life. This is a national study and will involve 120 individuals with rare-neuromuscular disorders from Norway's four health regions.

The purpose of the study is to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of VX-670 at different single and multiple doses in participants with DM1.

The primary purpose of the study is to evaluate the safety and tolerability of multiple intravenous (IV) doses of DYNE-101 administered to participants with Myotonic Dystrophy Type 1 (DM1). The study consists of 4 periods: A Screening Period (up to 8 weeks), a Placebo-Controlled Period (24 weeks), a Treatment Period (24 weeks) and a Long-Term Extension (LTE) Period (168 weeks) in both multiple-ascending dose (MAD) and dose expansion cohorts.

The goal of this observational study, conducted in participants' homes and requiring no travel to a study site, is to better understand disease variability in people with myotonic dystrophy type 1 (DM1) and to identify effective ways to measure symptoms. Myotonic dystrophy is one of the most variable diseases. Some people develop symptoms when they are young, others when they are much older. In the same family, some people may have mild problems, while others are strongly affected. The goal of this study is to find out more about what is causing these differences. To accomplish this, investigators will study the effects of DM1 on skeletal and smooth muscles, the heart, and the nervous system. Then, investigators will evaluate genetic differences with a blood sample. * Participants will receive a toolkit in the mail which includes all necessary equipment to participate in the study, including an iPad with video conferencing software. * Then the study team will connect with participants via videoconferencing for medical interview about DM1 symptoms and functional assessments * Participants will have their blood drawn in a lab in their community or using a home draw device, and ship it to us for research genetic analysis * Participants can chose to have their research genetic test result returned to them

The goal of this interventional study is to demonstrate the feasibility and tolerability of music and movement intervention for children with congenital DM1, while providing indications of its effectiveness in improving brain and heart symptoms of DM1. Additionally, information from the collection of biological samples and wearable devices (accelerometer, EEG headband and ECG chest strap) will be used to identify brain-heart biomarkers and outcome measures for use in future research and trials. Researchers will compare the results of physical and cognitive assessments for each participant to assessments from baseline after 10 weeks of weekly music sessions. Qualitative measures (questionnaires and focus groups) will inform the feasibility of this intervention for this population. The main questions this study aims to answer are: * Are weekly music education sessions feasible for children with DM1? * Are weekly music education sessions tolerable for children with DM1? Participants will: * Attend 45-minute-long music sessions once weekly for 10 weeks. * Attend two clinic visits for cognitive and physical assessments. * Provide blood, saliva, stool and urine samples. * Use wearable devices both at-home and during music sessions. * Parents/caregivers of participants will complete questionnaires and participate in three focus groups. Progression from feasibility study to a full-scale clinical trial will be informed by four progression criteria: 1. The feasibility of attendance, as assessed by attendance rate to 10 music sessions (≥ 60%) 2. Feasibility of attendance, as rated by parents/caregivers of participants (≥60% rate "extremely" or "very" practical to attend) 3. Attrition rate of the study, as determined by percentage of participants who complete the study (≥ 60%) 4. Overall satisfaction, as rated by parents/caregivers of participants (≥60% rate "very satisfied" or "satisfied")