Myasthenia GravisMuSK 1000NCT06259071
MuSK Myasthenia 1000 Study
An observational study of Myasthenia Gravis and MuSK MG, run by George Washington University at 1 site in United States.
Trial summary
The MuSK myasthenia gravis 1000 study seeks to collect saliva samples from 1000 subjects with laboratory confirmed diagnosis of MuSK myasthenia to identify genetic variations associated with MuSK MG. Read more about this study
- Who is it for?
- Ages 7 to 99 years
- Conditions the study is for
- Myasthenia Gravis, MuSK MG, MuSK Myasthenia Gravis
- How many people
- 1,000 participants
- Where
- 1 siteUnited States
- Study dates
- 23 Aug 2023to 31 Dec 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 7 to 99 years
- All sexes
- Child, Adult, Older adult
Study population: musk myasthenia gravis patients
Who may be able to join
- Lab test confirming diagnosis of MuSK myasthenia gravis
- Willingness to provide saliva sample via mail or in person
Who cannot join
- Inability to provide informed consent
- Unwillingness to provide lab results of elevated muscle specific kinase antibody
- Unwillingness to provide saliva sample
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
George Washington University
Washington D.C., District of Columbia, 20037
Gulsen Oztosun, MD, 202-677-6109, goztosun@mfa.gwu.edu
About this study
Official title: Genome Wide Association Study of Patients With Muscle Specific Kinase Myasthenia Gravis
The MuSK myasthenia gravis 1000 study seeks to collect saliva samples from 1000 subjects with laboratory confirmed diagnosis of MuSK myasthenia to identify genetic variations associated with MuSK MG. The data collected may be used by researchers to gain a better understanding of the cause of MuSK MG and to identify biomarkers and targeted therapy for MuSK MG.
Read the detailed description
Myasthenia gravis is a rare, neuromuscular (disease of the muscle and nerves) autoimmune disease characterized by weakness of the muscles. MG has a prevalence of approximately 14-40 per 100,000 people in the United States. There is no cure for MG, however understanding the disease is crucial to pave the way for development of new therapies. Important to note, the most common subtype of MG associated with Acetylcholine receptor antibodies (AChR) are found in more than 80% of patients with generalized myasthenia gravis, whereas muscle-specific kinase (MuSK) antibodies are found in only 8% of MG patients. These are found in patients with the AChR antibodies. Since the discovery of MuSK antibodies in patients, much has been learned. It has become clear that MuSK antibody MG differs in many ways from AChR antibody MG. There is some information that specific genetic factors play a role in development of MuSK MG.
Our objective is to collect saliva samples from 1000 subjects with laboratory confirmed diagnosis of MuSK myasthenia. These saliva samples will be then sent to the laboratory of Bryan Traynor who directs the Neurogenetics Laboratory at NIH. Dr. Traynor will conduct a genome-wide association study (GWAS). This study will provide important information of genetic factors leading to MuSK MG.
GWAS, also known as genome-wide association study, is a study performed to identify genetic characteristics associated with a particular disease. GWAS is currently used across various disciplines in medicine to better understand complex conditions where genetic risk factors contribute to the development of diseases.
Presently, this study has not been done in patients with MuSK MG. Researchers can use information from this study to develop quality treatment and ultimately, move toward targeted therapy approach for patients. We hope to find unique results and further enhance myasthenia research.
- Conditions
- Myasthenia Gravis, MuSK MG, MuSK Myasthenia Gravis
- Medical subject headings
- Myasthenia Gravis
What is being measured
The primary outcome is the main question the study is designed to answer.
GWAS
identify genetic characteristics associated with musk myasthenia gravis
Measured: 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Feb 2024
- Study start23 Aug 2023
- Primary completion23 Aug 2027 (estimated)
- Study completion31 Dec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Myasthenia GravisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Prospective
- Enrolment
- 1,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- George Washington University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06259071
- Sponsor's protocol ID
- 8203
- Acronym
- MuSK 1000
- Status last verified
- Aug 2026
- First submitted
- 6 Feb 2024
- Last updated
- 5 Aug 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Renton AE, Pliner HA, Provenzano C, Evoli A, Ricciardi R, Nalls MA, Marangi G, Abramzon Y, Arepalli S, Chong S, Hernandez DG, Johnson JO, Bartoccioni E, Scuderi F, Maestri M, Gibbs JR, Errichiello E, Chio A, Restagno G, Sabatelli M, Macek M, Scholz SW, Corse A, Chaudhry V, Benatar M, Barohn RJ, McVey A, Pasnoor M, Dimachkie MM, Rowin J, Kissel J, Freimer M, Kaminski HJ, Sanders DB, Lipscomb B, Massey JM, Chopra M, Howard JF Jr, Koopman WJ, Nicolle MW, Pascuzzi RM, Pestronk A, Wulf C, Florence J, Blackmore D, Soloway A, Siddiqi Z, Muppidi S, Wolfe G, Richman D, Mezei MM, Jiwa T, Oger J, Drachman DB, Traynor BJ. A genome-wide association study of myasthenia gravis. JAMA Neurol. 2015 Apr;72(4):396-404. doi: 10.1001/jamaneurol.2014.4103.
PubMed 25643325Green JD, Barohn RJ, Bartoccion E, Benatar M, Blackmore D, Chaudhry V, Chopra M, Corse A, Dimachkie MM, Evoli A, Florence J, Freimer M, Howard JF, Jiwa T, Kaminski HJ, Kissel JT, Koopman WJ, Lipscomb B, Maestri M, Marino M, Massey JM, McVey A, Mezei MM, Muppidi S, Nicolle MW, Oger J, Pascuzzi RM, Pasnoor M, Pestronk A, Provenzano C, Ricciardi R, Richman DP, Rowin J, Sanders DB, Siddiqi Z, Soloway A, Wolfe GI, Wulf C, Drachman DB, Traynor BJ. Epidemiological evidence for a hereditary contribution to myasthenia gravis: a retrospective cohort study of patients from North America. BMJ Open. 2020 Sep 18;10(9):e037909. doi: 10.1136/bmjopen-2020-037909.
PubMed 32948566
Study at a glance
From the registry record, last updated by the sponsor on 5 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Genome Wide Association Study of Patients With Muscle Specific Kinase Myasthenia Gravis
- ClinicalTrials.gov ID
- NCT06259071
- Acronym / sponsor ID
- MuSK 1000 / 8203
- Conditions
- Myasthenia Gravis, MuSK MG, MuSK Myasthenia Gravis
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 1,000 participants (estimated)
- Lead sponsor
- George Washington UniversityUniversity, hospital or other
- Study start
- 23 Aug 2023 (actual)
- Primary completion
- 23 Aug 2027 (estimated)
- Study completion
- 31 Dec 2027 (estimated)
- First posted
- 14 Feb 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The MuSK myasthenia gravis 1000 study seeks to collect saliva samples from 1000 subjects with laboratory confirmed diagnosis of MuSK myasthenia to identify genetic variations associated with MuSK MG. The data collected may be used by researchers to gain a better understanding of the cause of MuSK MG and to identify biomarkers and targeted therapy for MuSK MG.
Detailed description
Myasthenia gravis is a rare, neuromuscular (disease of the muscle and nerves) autoimmune disease characterized by weakness of the muscles. MG has a prevalence of approximately 14-40 per 100,000 people in the United States. There is no cure for MG, however understanding the disease is crucial to pave the way for development of new therapies. Important to note, the most common subtype of MG associated with Acetylcholine receptor antibodies (AChR) are found in more than 80% of patients with generalized myasthenia gravis, whereas muscle-specific kinase (MuSK) antibodies are found in only 8% of MG patients. These are found in patients with the AChR antibodies. Since the discovery of MuSK antibodies in patients, much has been learned. It has become clear that MuSK antibody MG differs in many ways from AChR antibody MG. There is some information that specific genetic factors play a role in development of MuSK MG.
Our objective is to collect saliva samples from 1000 subjects with laboratory confirmed diagnosis of MuSK myasthenia. These saliva samples will be then sent to the laboratory of Bryan Traynor who directs the Neurogenetics Laboratory at NIH. Dr. Traynor will conduct a genome-wide association study (GWAS). This study will provide important information of genetic factors leading to MuSK MG.
GWAS, also known as genome-wide association study, is a study performed to identify genetic characteristics associated with a particular disease. GWAS is currently used across various disciplines in medicine to better understand complex conditions where genetic risk factors contribute to the development of diseases.
Presently, this study has not been done in patients with MuSK MG. Researchers can use information from this study to develop quality treatment and ultimately, move toward targeted therapy approach for patients. We hope to find unique results and further enhance myasthenia research.
Study design
- Observational model
- Other
- Time perspective
- Prospective
Who may qualify
- Ages
- 7 to 99 years
- Sex
- All
- Age groups
- Child, Adult, Older adult
- Study population
- musk myasthenia gravis patients
Key inclusion criteria (2 listed)
- Lab test confirming diagnosis of MuSK myasthenia gravis
- Willingness to provide saliva sample via mail or in person
Key exclusion criteria (3 listed)
- Inability to provide informed consent
- Unwillingness to provide lab results of elevated muscle specific kinase antibody
- Unwillingness to provide saliva sample
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
GWAS
Time frame: 2 years
identify genetic characteristics associated with musk myasthenia gravis
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Aug 2026.
- Background: PubMed 25643325Renton AE, Pliner HA, Provenzano C, Evoli A, Ricciardi R, Nalls MA, Marangi G, Abramzon Y, Arepalli S, Chong S, Hernandez DG, Johnson JO, Bartoccioni E, Scuderi F, Maestri M, Gibbs JR, Errichiello E, Chio A, Restagno G, Sabatelli M, Macek M, Scholz SW, Corse A, Chaudhry V, Benatar M, Barohn RJ, McVey A, Pasnoor M, Dimachkie MM, Rowin J, Kissel J, Freimer M, Kaminski HJ, Sanders DB, Lipscomb B, Massey JM, Chopra M, Howard JF Jr, Koopman WJ, Nicolle MW, Pascuzzi RM, Pestronk A, Wulf C, Florence J, Blackmore D, Soloway A, Siddiqi Z, Muppidi S, Wolfe G, Richman D, Mezei MM, Jiwa T, Oger J, Drachman DB, Traynor BJ. A genome-wide association study of myasthenia gravis. JAMA Neurol. 2015 Apr;72(4):396-404. doi: 10.1001/jamaneurol.2014.4103.
- Background: PubMed 32948566Green JD, Barohn RJ, Bartoccion E, Benatar M, Blackmore D, Chaudhry V, Chopra M, Corse A, Dimachkie MM, Evoli A, Florence J, Freimer M, Howard JF, Jiwa T, Kaminski HJ, Kissel JT, Koopman WJ, Lipscomb B, Maestri M, Marino M, Massey JM, McVey A, Mezei MM, Muppidi S, Nicolle MW, Oger J, Pascuzzi RM, Pasnoor M, Pestronk A, Provenzano C, Ricciardi R, Richman DP, Rowin J, Sanders DB, Siddiqi Z, Soloway A, Wolfe GI, Wulf C, Drachman DB, Traynor BJ. Epidemiological evidence for a hereditary contribution to myasthenia gravis: a retrospective cohort study of patients from North America. BMJ Open. 2020 Sep 18;10(9):e037909. doi: 10.1136/bmjopen-2020-037909.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Myasthenia Gravis and MuSK MG, run by George Washington University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 5 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Gulsen Oztosun, MD (202-677-6109, musk1000@mfa.gwu.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
GWAS (time frame: 2 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06259071, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Aug 2026.