Myotonic dystrophy type 1 (DM1) is an autosomal dominant multisystem disorder caused by an expanded CTG trinucleotide repeat in the 3' untranslated region of the DMPK gene. Beyond myotonia and progressive skeletal muscle weakness, DM1 involves the cardiac, respiratory, central nervous, gastrointestinal, endocrine, and ocular systems, and respiratory and cardiac involvement are the leading causes of disability and death. Systematic, long-term outcome data in Chinese DM1 patients are lacking. C-DMCOS-DM1 is a multicenter, prospective, observational cohort study that systematically records demographic data, multisystem involvement, and predefined disability-related clinical outcome events in genetically confirmed Chinese DM1 patients, with regular follow-up every 3 to 6 months. The study also collects residual blood, skeletal muscle, myocardium (when a pacemaker is implanted), and urine specimens for transcriptomic and other molecular studies. The aims are to characterize the disease burden of Chinese DM1 patients, identify risk and prognostic factors for disabling outcomes, and build risk-prediction models to inform follow-up, management, and future clinical trials.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Cumulative incidence and time to first major disability-related clinical outcome event
Timeframe: From enrollment up to 10 years