This study aims to generate real world evidence (RWE) from Italian clinical practice on the impact of efgartigimod alfa in gMG patients encompassing clinical outcomes and patient reported experiences.
The study population will consist in adult patients with a documented diagnosis of gMG who are AChR-antibody positive and for whom the decision of treatment with efgartigimod alfa for gMG has been made independently of study participation as part of routine clinical care.
The total study duration will be up to 23 months
At least 18 years old at signing of informed Consent Form (ICF) and privacy form (PF)
Documented diagnosis of gMG
AChR-antibody positive
The treating physician has decided to initiate efgartigimod alfa as part of routine clinical care and in accordance with product labelling, independently from the study
Hypersensitivity to the active substance or to any of the excipients listed: sodium dihydrogen phosphate, monohydrate; disodium hydrogen phosphate, anhydrous; arginine hydrochloride; polysorbate 80, hyaluronidase, histidine, histidine hydrochloride monohydrate, methionine, polysorbate 20, sucrose.
Current or planned participation in an interventional clinical trial.
Adult patients with a documented diagnosis of gMG who are AChR-antibody positive and for whom the decision of treatment with efgartigimod alfa for gMG has been made independently of study participation as part of routine clinical care.
Cohort
Other
Not listed
Changes in MG-ADL scores from baseline
The Myasthenia Gravis Activities of Living (MG-ADL) scale is an 8-item patient-reported scale that measures MG symptoms and functional status across 4 domains. The total score ranges from 0 to 24, with higher scores indicating greater disability.
Percentage of patients achieving MSE
Minimal Symptom Expression (MSE) is defined as an MG-ADL score ≤ 1
Changes in QMG scores over time
The quantitative myasthenia gravis (QMG) score is a commonly used scale for evaluating muscle weakness associated with myasthenia gravis. It consists in a 13-item direct physician assessment scoring system that quantifies disease severity, based on impairments of body functions and structures. The total QMG score ranges from 0 to 39, where higher scores indicated greater disease severity.
Changes in MG-QoL-15r scores over time
Changes in PROMIS Fatigue SF 4a scores over time
The PROMIS Fatigue Short Form 4a is a four-item questionnaire used to assess the experience of fatigue over the past seven days. The items are designed to capture different aspects of fatigue, including the impact of fatigue on physical and mental activities. The raw score can range from 4 to 20, with higher scores indicating more severe fatigue.
Changes in FSS over time
The Fatigue Severity Scale (FSS) is a self-administered questionnaire with 9 items (questions) investigating the severity of fatigue in different situations during the past week. The final score ranges from 1 to 7.
