View clinical trials related to Myasthenia Gravis.
Filter by:Myasthenia gravis is an autoimmune neurological disease caused by autoantibodies primarily directed against components of the postsynaptic membrane of the neuromuscular junction. Approximately 85% of patients have antibodies directed against the acetylcholine receptor (anti-AChR). Anti-AChR antibodies act through three distinct mechanisms: 1. Activation of the classical complement pathway: Formation of membrane-attack complexes (MACs) results in the destruction of the postsynaptic membrane. 2. Mechanical blockade: Anti-AChR antibodies block the acetylcholine binding site on its receptor. 3. Internalization and lysosomal degradation: Bivalent IgG causes cross-linking of adjacent receptors leading to internalization and degradation of AChRs (antigenic modulation). Patient mortality has significantly reduced due to effective treatments preventing severe exacerbations of myasthenic symptoms. In the past five years, the FDA and EMA have approved complement inhibitors for the treatment of generalized myasthenia gravis with anti-AChR antibody positivity. Eculizumab, a humanized monoclonal antibody, binds to the complement fragment C5, inhibiting its cleavage into C5a and C5b, and preventing the formation of the terminal complement complex C5b-9 (MAC). Currently, Eculizumab is approved in Italy for generalized myasthenia gravis associated with anti-acetylcholine receptor antibody positivity. This class of drugs is generally more effective than conventional immunosuppressive therapies, though it comes with higher costs. There is heterogeneity among patients in their response to complement inhibitor therapies. Currently, there is no specific evidence indicating which patients may benefit most from this class of treatments. Personalized therapy, considering the predominant pathogenic mechanisms of anti-AChR in individual patients, seems necessary. Interindividual heterogeneity in the autoantibody repertoire could underlie different responses to complement inhibitor therapies. For example, inhibition of the complement cascade in patients whose autoantibodies also block receptors might result in an unsatisfactory treatment response. Moreover, C5 gene polymorphisms could explain a lack of response to these new drugs. Investigating the immune, genetic, and cellular profile of myasthenic patients eligible for these new pharmacological therapies could be useful for identifying predictive markers of response and personalizing therapeutic choices.
The aim of this study is to establish a real-world clinical neuroimmune disease research cohort, to follow up and observe the prognosis of patients with different subtypes and subgroups, and to provide support for the treatment, early warning, and outcome prediction research of neuroimmune diseases.
This observational study seeks to investigate the underlying processes of myasthenia gravis by employing multimodal monitoring techniques. By integrating digital biomarkers alongside clinical monitoring, we aim to enhance the detection of disease activity and establish correlations between digital measures, clinical scores and various questionnaires including sores on quality of life, sleep quality or activities of daily living. Primarily including patients treated with newly approved drugs, it aims at improving and monitoring the efficacy and safety of treatment and allowing a more individualized treatment.
This study is a single-arm, open-label early exploratory clinical trial designed to evaluate the safety, tolerability, and preliminary efficacy of GC012F injection in subjects with refractory GMG. Additionally, the study aims to assess the pharmacokinetic (PK), pharmacodynamic (PD) characteristics, and immunogenicity of GC012F injection in subjects.
This is a fully remote, site-less, prospective, observational study enrolling adults in the United States (excluding U.S. territories) with undiagnosed neuromuscular symptoms. The main study objective is to evaluate the feasibility of a social media recruitment campaign tied to a participant reported symptom survey and self-administered physical assessment tool to influence undiagnosed participants to seek care for suspected Myasthenia Gravis (MG).
RESET-MG: A Phase 1/2 Open-Label Study to Evaluate the Safety and Efficacy of CABA-201 in Participants with Generalized Myasthenia Gravis
This is a multi-country, prospective safety study of pregnant women exposed to efgartigimod any time within 25 days prior to conception or any time during pregnancy. Women exposed to efgartigimod only during breastfeeding will also be eligible to enroll. Background rates of major congenital malformations (MCMs) will be obtained from populations within the same countries/regions as the countries/regions in which the VYVGART IV or SC-exposed pregnancies were reported.
The primary purpose of this study is to measure the efficacy and safety of efgartigimod intravenously (IV) compared to placebo in participants with Acetylcholine Receptor Binding Antibody (AChR-Ab) seronegative Generalized Myasthenia Gravis (gMG). Other objectives are to assess long-term efficacy, safety, and tolerability of efgartigimod. Study will consist of: - Screening - Part A: participants will be randomized to receive either efgartigimod IV or placebo - Part B: participants completing part A will receive open-label efgartigimod IV
The purpose of this Phase 2 study is to evaluate the safety, tolerability, pharmacometrics, and efficacy of DNTH103 in participants with generalized myasthenia gravis (gMG).
The goal of this observational study is to evaluate the feasibility of using wearable sensor and digital technologies to measure motor and speech function in adults with autoimmune Myasthenia Gravis (MG). The main question[s] it aims to answer are: - To measure the correlation of sensor-based measures of motor function with existing outcome measures including the MG-ADL, MGQOL15r, QMG, MGComposite, and Neuro-QOL Fatigue scales. - To develop and validate tablet-based digital assessments of speech and facial expression and to compare with existing outcome measures. Participants will wear a pendant sensor for 7 days and then participate in tablet-based and in-person myasthenia-specific physical examinations. This will be performed in concert with routine care in the Massachusetts General Hospital MG clinic.