Active clinical trials for "Myotonia"

This is a clinical trial to determine if Lamotrigine is non-inferior to Mexiletine for the treatment of myotonia in patients with Non-Dystrophic Myotonia. Non-dystrophic Myotonia is a genetic condition for which there is no cure. It affects patients for the duration of their life and impacts work, leisure and can lead to significant morbidity. The study is a cross-over design - participants will be randomized to either lamotrigine or mexiletine first for 8 weeks and then swap over after a week wash-out to the other medication for a further 8 weeks. Participants and investigators will be blinded to the treatment schedule. 60 participants will recruited through the clinical service, national registry and national liaison.

In this clinical study, the aim is to investigate whether there is a difference in treatment of myotonia using two drugs. A difference there can justify the significantly higher cost when treated by Namuscla versus Lamotrigine. According to the current corona pandemic, the investigators designed an app to use for data collection in the study. The app also ensures that patients who live far from the clinic more easily can participate.

The Myotonic Dystrophy Family Registry (MDFR) is an online, patient-entered database that collects information on myotonic dystrophy (DM) to aid researchers in developing new, effective treatments and help identify participants for research studies and clinical trials.

The main objective of this study is to explore whether multiple trials with individual patients (N-of-1 trials) can produce a reliable evidence base for coverage decisions on clinical and cost-effectiveness of drug treatment for patients with rare diseases. As a case study, we will study the clinical and cost-effectiveness of Mexiletine in patients with Non-Dystrophic myotonia. The results of this analysis will be compared with the results obtained from a recently published international, multi-centre, randomized, placebo-controlled trial of Mexiletine in patients with Non-Dystrophic Myotonia (clinicaltrials.gov Identifier: NCT00832000). The secondary objective of this proposal is to assess whether mexiletine improves myotonia measured (both quantitatively and qualitative) in patients with non-dystrophic myotonia.

Myotonia is a functional limiting symptom where the muscle stiffens on action leading to arrest of movement. Pharmacological treatment may make the difference between a physically restricted and a normal life. Today, patients with myotonia are treated with Mexiletine a medications resulting in adverse events up to 40 % and which very expensive and difficult to obtain. Our clinic has, forced by the above problems related to Mexiletine, treated a few patients with the drug Lamotrigine with pronounced positive effect in all. Lamotrigine belongs to the same category of drugs as Mexiletine but has fewer and milder side effects. Based on the similarities of the 2 drugs in pharmacological action and the positive experiences investigators are convinced that Lamotrigine will show a positive effect if evaluated in a broader scale. Due to the advantages of Lamotrigine compared to Mexiletine investigators find it of outmost importance for patients that this drug is assessed formally to establish Lamotrigine as a treatment choice for myotonia. Investigators believe that this will potentially make a huge difference in life quality for persons with myotonia. Investigators aim at investigating the efficacy and tolerability of Lamotrigine in the treatment of myotonia in a randomized doublet blinded placebo controlled crossover study.

Nondystrophic myotonias (NDM) are neuromuscular disorders caused by genetic abnormalities in certain muscle cell membrane proteins. The proteins affect muscle contraction. Individuals with NDM experience limited muscle relaxation, which then can cause pain, weakness, incoordination, and impaired physical activity and function. Because NDM is very rare, information on the best way to treat people with the disorders is lacking, and there are no FDA-approved therapies. The purpose of this study is to determine the effectiveness of the medication mexiletine in treating people with NDM.

The purpose of this study is to gather preliminary data to determine if ranolazine is a safe and effective treatment for the symptoms of myotonia congenital, paramyotonia congenita, and myotonic dystrophy type 1. The duration of the study is 5 weeks.

Investigators aimed to investigate whether training can increase fitness levels in patients with myotonia, and thereby reduce the symptom of myotonia.

Treatment strategies in non-dystrophic myotonias are based on selective case reports, clinical experience and theoretical benefit. Presently, the most promising antimyotonic medication is mexiletine (MEX) but its manufacturing was stopped. The proposed randomized, double-blind, placebo-controlled, crossover trial is designed to: study the safety and efficacy of mexiletine for the treatment of non-dystrophic myotonias validate electromyographic tests as a standardized outcome measure of myotonia assess the reliability and validity of a new clinical rating scale for myotonia

The goal of this observational study is to assess movement in individuals with Myotonic Dystrophy Type 1 (DM1) and Type 2 (DM2) using digital biomarker tools. The long-term aim of this study is to incorporate these outcomes into clinical trials of DM1 and DM2 therapies. Participants will complete a series of assessments that allow for researchers to measure hand myotonia and walking quality, including a Video Hand Opening Test (VHOT), grip strength, 10 meter walk/run test, 6 minute walk test, Timed Up and Go (TUG), Motor Function Measures-32 (MFM-32) test, and more. These assessments may be recorded to detect and map participants motion and walking patterns. Several patient reported outcome (PROs) questionnaires will also be recorded. Participants may also be asked to monitor exercise and sleep activity at home using an Actigraph wearable device. This study is divided into 2 parts: Part A consists of a single visit. Part B consists of a 1-year longitudinal study with 3 clinical follow-up visits.