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Have you been diagnosed
with Myotonic Dystrophy
Type 1 (DM1) or Type 2 (DM2)?

Learn more about clinical research studies evaluating if mexiletine prolonged release (PR) is safe and effective
in alleviating muscle stiffness and improving quality of life.

Have you been diagnosed with Myotonic Dystrophy Type 1 (DM1)
or Type 2 (DM2)?

Learn more about clinical research studies evaluating if mexiletine prolonged release (PR) is safe and effective in alleviating muscle stiffness and improving quality of life.

About the HERCULES and ATLAS Studies

The HERCULES clinical study is the first of its kind, evaluating if an investigational medication, called mexiletine prolonged release (PR), is safe and effective in alleviating muscle stiffness and improving daily activity and quality of life in people diagnosed with myotonic dystrophy type 1 or type 2 (DM1 or DM2). The study will include a total of 96 patients across different countries in Europe and the United Kingdom.

If you qualify and choose to join the study, you will be asked to stay in the study for six months and will receive either mexiletine PR or placebo (a treatment with no active ingredient). Following HERCULES, an extension study, called ATLAS, will take place for a further 18 months. If you agree to participate you will receive treatment with mexiletine PR and benefit from comprehensive safety assessments during your time in the study.

You may be eligible to participate if you are:

*Participants under the age of 18 will need approval from a responsible adult to participate

About mexiletine

Mexiletine (NaMuscla®) is the only treatment approved (in several countries) as the first-line medication for easing the symptoms of myotonia in adults with non-dystrophic myotonic (NDM) disorders, thus improving quality of life.

While physicians and patient groups support its use as the standard of care for myotonia, which has shown to be safe and efficacious, a new once daily (QD), prolonged release (PR) formulation has been developed as a powder for reconstitution to allow for improved swallowability and tolerability, and better patient outcomes for people with myotonic dystrophy (DM). The HERCULES and ATLAS studies will evaluate the safety and effectiveness of mexiletine PR, and how it impacts quality of life in people with myotonia.

About Myotonic Dystrophy

Myotonic dystrophy is a genetic condition that causes progressive muscle weakness and myotonia, which is an inability to relax muscles after contraction. Currently, no cure or genetic treatments are available for myotonic disorders.

What Will I Be Asked To Do?

If you qualify and agree to participate in the HERCULES study, you will be randomly chosen to receive either mexiletine PR or a placebo. HERCULES is a blinded study – neither you, nor your study doctor, will know which treatment you are receiving.

Participants will take either mexiletine PR or placebo for six months orally (by mouth). Participants who complete HERCULES will then have the option to participate in a follow-up study, called ATLAS, for a further 18 months.

In the ATLAS study, all participants will receive treatment with mexiletine PR and benefit from comprehensive safety assessments during their time in the study. ATLAS will evaluate long-term safety and effectiveness of mexiletine PR. Your health and safety will be closely monitored throughout both studies.

During your participation in HERCULES, you will be required to attend six appointments and two telephone calls with the study team. In the ATLAS study you will visit the study doctor about six times and be contacted by telephone about four times.

Patients who qualify will receive study-related examinations and medication at no cost. Travel cost to and from the study visit could be covered by the sponsor if needed.

During study visits, the study team will:

Your participation is voluntary, and you are free to withdraw at any time, without giving any reason and without your medical care or legal rights being affected. You can discuss regular medical care with the study doctor.

Why Should I Join the HERCULES and ATLAS Studies?

While we do not know the outcomes of the study, there may be potential improvement to your health. Mexiletine has been used as an antimyotonic treatment for several decades and it is considered for treatment of symptoms of myotonia.

In addition, you are contributing to the advancement of medical knowledge and potentially helping to improve treatments for yourself and others in the future by participating in this study. 

HERCULES and ATLAS will provide information on the safety and effectiveness of mexiletine’s PR formulation in people with DM1 and DM2.

See If You Pre-Qualify

Are you over the age of 16? Do you have DM1 or DM2?

If you answered ‘Yes’ to all these questions, you may be eligible to participate in this study, see below for the list of all participating sites per country and their contact information to contact directly for more information.

Thank you for your interest in the HERCULES study.

Belgium

Study Site Name:
UZ Leuven

Herestraat 49 3000 Leuven Belgium

Email:
Kristl.claeys@uzleuven.be
(Prof. Kristl Claeys)