A New Clinical Trial for

Myasthenia
Gravis Patients

Contact us to learn more about the study:

If you or someone you know has MG, please contact Victorine.

Victorine Sikati Foko

Nurse Study Coordinator
victorine.sikatifoko@neuro-outaouais.ca
Clinique Neuro-Outaouais 209 Gamelin St., Suite 200, Gatineau, QC J8Y 1W2
Dr. François Jacques Investigator

Summary

This page invites individuals diagnosed with myasthenia gravis (MG) to participate in a study at Clinique Neuro-Outaouais. The study will investigate the drug efgartigimod as a replacement for IVIG treatment in patients with generalized MG who are anti-acetylcholine receptor (AChR) antibody positive and stable on IVIG for at least 6 months.

Efgartigimod works by blocking the neonatal Fc receptor (FcRn), which reduces the levels of IgG autoantibodies that mistakenly attack the body’s own acetylcholine receptors, leading to muscle weakness in MG. Unlike IVIG, efgartigimod is not a blood product and is administered via a one-hour IV infusion weekly for four weeks, followed by a four-week pause.

The purpose of this study is to determine if efgartigimod is as effective or better than IVIG in treating MG patients. Approximately thirty patients will participate in this 26-week study conducted at Clinique Neuro-Outaouais in Gatineau, Québec.

Dr. François Jacques, the lead investigator, will address any questions or concerns regarding participation.

Dr. François Jacques
Investigator

FAQ

Click on the green sections below to learn more about the study.

Click on the blue sections to read questions and answers

What is this study about?

 This study is investigating a drug called efgartigimod to see if it works as well as your current IVIG treatment for generalized myasthenia gravis (gMG). We also want to know if patients prefer efgartigimod or IVIG. We are also looking at the safety and how well you tolerate efgartigimod over 6 months.

You have been invited because you have been diagnosed with myasthenia gravis (MG).

Efgartigimod is a medication that blocks a protein in your body called the neonatal Fc receptor (FcRn). By doing this, it lowers the levels of IgG autoantibodies, which are immune system proteins that mistakenly attack your own body in MG. Unlike IVIG, efgartigimod is not a blood product.

In myasthenia gravis, IgG autoantibodies attack and damage acetylcholine receptors on your nerves, which prevents your muscles from contracting properly. Efgartigimod helps improve muscle contraction and reduce MG symptoms by lowering the amount of these harmful autoantibodies.

IVIG stands for intravenous immunoglobulin, which is a common treatment for myasthenia gravis. This study will compare efgartigimod to your current IVIG treatment.

Efgartigimod works by blocking a specific protein to lower autoantibody levels, while IVIG is a blood product that contains antibodies from many donors. Efgartigimod is given as a 1-hour intravenous infusion once a week for 4 weeks, followed by a 4-week break, whereas IVIG treatment schedules can vary.

Yes, efgartigimod is already approved for treating generalized myasthenia gravis in adults who are anti-acetylcholine receptor (AChR) antibody positive. Previous studies have shown it can reduce IgG and anti-AChR autoantibody levels and has an established safety profile.

The main purposes are to see if efgartigimod is as effective as IVIG for your gMG, if patients prefer one treatment over the other, and to further understand the safety and tolerability of efgartigimod when given in a regular dosing schedule over 6 months.

The study will be conducted at the Clinique Neuro-Outaouais. 209 Rue Gamelin #200, Gatineau, Quebec J8Y 1W2.

Your participation in the study will last approximately 26 weeks (about 6 months).

 If you decide to participate, you will have two screening visits, 16 treatment visits for the efgartigimod infusions, and one end-of-study visit. You will also need to complete questionnaires at the clinic and some from home during the treatment pauses. Your IVIG treatment will be stopped one week before the study drug starts.

During the first screening visit, the study doctor will explain the study in detail, answer your questions, and you will sign the consent form if you wish to participate. You will also have a medical examination and your medical history and current medications will be reviewed. You will return about two weeks later to complete questionnaires, and then the doctor will determine if you are eligible for the study.

At each treatment visit, your vital signs will be checked, you will have a urine pregnancy test if applicable, and you will receive the efgartigimod infusion over one hour, followed by an hour of observation. The study coordinator will also ask about your medications and any new symptoms. A doctor will be present for each infusion.

During the 4-week breaks between the efgartigimod treatment cycles, you will complete clinical assessment questionnaires from home and inform the study team of any changes in your medications or condition.

At the final visit, the study doctor will perform a physical and neurological examination, and you will complete clinical assessment questionnaires.

Yes, your participation is voluntary, and you can withdraw from the study at any time for any reason without penalty. If you withdraw, the study coordinator may contact you a couple of weeks later to check on how you are doing. You will also need to return for a physical and neurological examination.

The study doctor may withdraw you if they believe it is in your best interest, if you have a medical emergency, or if you do not follow the study visit schedule.

If you are eligible for the study, you will receive efgartigimod as an intravenous (IV) infusion.

You will receive 4 treatments over a 3 week period followed by a 4 week pause. This cycle will be repeated four times over the 26-week study period.

Each efgartigimod infusion will take about one hour. You will also be observed for an additional hour after the infusion.

No, the efgartigimod will be provided to you free of charge for the duration of the study.

You will have the option to continue to receive efgartigimod treatments through a compassionate use program.

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What are the possible side effects of efgartigimod?

In previous studies, common side effects included inflammation of airway passages, upper respiratory tract infection, urinary tract infection, headache, and muscle pain. Most side effects were mild or moderate and did not last long. There is a potential for immune reactions (fever, itching, rash) or allergic reactions (including severe symptoms like shortness of breath), although these have not been common in studies so far. Efgartigimod could also increase your risk of infections.

A serious side effect is one that is life-threatening, requires hospitalization, results in significant disability, or has other serious medical implications. Serious side effects occurred in a similar percentage of patients who received efgartigimod and those who received a placebo in previous studies.

Drawing blood may cause pain, bruising, or infection at the injection site. Some people may feel dizzy, faint, or have an upset stomach.

Efgartigimod may cause infusion-related reactions, which are usually mild or moderate and can include fever, itching, or rash. These often happen during or shortly after the infusion.

You cannot become pregnant or breastfeed during the study. You will need to have a negative pregnancy test before starting treatment and use reliable contraception throughout the study and until your final dose. You will have regular urine pregnancy tests during the study.

There are no specific contraceptive requirements for male participants.

You should not breastfeed while receiving efgartigimod.

Your vaccination status will be reviewed. You may be advised to get some vaccines (except live vaccines) during the pauses between treatment cycles, making sure there is at least a 48-hour window before or after an infusion. Live or live-attenuated vaccines are generally not recommended during efgartigimod treatment.

As with any new drug, there may be rare or currently unknown side effects, and efgartigimod could potentially interact with other medications. You should always check with the study doctor before starting any new medications.

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What are the possible benefits of participating in this study?

By participating, you will help gather important information about efgartigimod for treating myasthenia gravis, which could benefit other patients in the future. The study team hopes that the treatment will also benefit you personally, but there is no guarantee that your condition will improve.

There are other treatment options for myasthenia gravis. You should discuss these with your regular doctor or Dr. François Jacques. If efgartigimod is found to be less effective than IVIG for you, you will be advised to restart IVIG therapy.

A report of the study results will be available upon request, and your identity will be protected in any published information. A summary of the results will also be posted on the ClinicalTrials.gov website.

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Will my information be kept confidential?

Yes, all information collected about you will be kept strictly confidential and stored securely at the Clinique Neuro-Outaouais. Your name will not be used in any study documents or publications.

Authorized representatives from Health Canada, the Ethics Committee (Canadian Shield ERB), and other regulatory bodies may review your medical file for study monitoring purposes, but your identity will remain confidential.

No, you will not have any expenses for participating in this study. All study-related costs, including the study drug, will be covered by the Clinique Neuro-Outaouais.

You will not receive direct financial compensation for participating. However, you will be reimbursed for reasonable travel and parking expenses at a planned rate of $80 per visit.

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Is my participation voluntary?

Yes, your participation is entirely voluntary. You can choose not to participate or withdraw at any time without any negative consequences to your future medical care.

If you have any questions about the study, please contact Dr. François Jacques or the Study Coordinator at (819) 777-2500.

If you have any questions about your rights as a research participant or concerns about the study, you can contact the Canadian Shield ERB at 905 681-8661 or by email at admin@cserb.com.

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