Patient-Reported Symptom Burden of Charcot-Marie-Tooth Disease Type 1A: Findings From an Observational Digital Lifestyle Study.

OBJECTIVES: This study aims to explore the impact of Charcot-Marie-Tooth disease type 1A (CMT1A) and its treatment on patients in European (France, Germany, Italy, Spain, and the United Kingdom) and US real-world practice. METHODS: Adults with CMT1A (n = 937) were recruited to an ongoing observational study exploring the impact of CMT. Data were collected via CMT&Me, an app through which participants completed patient-reported outcome measures. RESULTS: Symptoms ranked with highest importance were weakness in the extremities, difficulty in walking, and fatigue. Almost half of participants experienced a worsening of symptom severity since diagnosis. Anxiety and depression were each reported by over one-third of participants. Use of rehabilitative interventions, medications, and orthotics/walking aids was high. CONCLUSIONS: Patient-reported burden of CMT1A is high, influenced by difficulties in using limbs, fatigue, pain, and impaired quality of life. Burden severity appears to differ across the population, possibly driven by differences in rehabilitative and prescription-based interventions, and country-specific health care variability.

Patient-reportedimpact of myasthenia gravis in the real world: protocol for a digital observational study (MyRealWorld MG).

INTRODUCTION: Myasthenia gravis (MG) is a rare, chronic, autoimmune disease, mediated by immunoglobulin G antibodies, which causes debilitating muscle weakness. As with most rare diseases, there is little patient-reported data with which to understand and address patient needs. This study explores the impact of MG in the real world from the patient perspective. METHODS AND ANALYSIS: This is a 2-year prospective, observational, digital, longitudinal study of adults with MG, resident in the following countries: the USA, Japan, Germany, France, the UK, Italy, Spain, Canada and Belgium. The planned sample size is 2000. Recruitment will be community based, via patient advocacy groups, social media and word of mouth. Participants will use a smartphone application (app) to check eligibility, provide consent and contribute data. Planned data entry is as follows: (1) personal profile on enrollment-covering demographics, MG characteristics and previous care; (2) monthly event tracker-current treatments, healthcare visits, treatment-related adverse events, productivity losses; (3) monthly selection of validated generic and disease-specific patient-reported outcomes instruments: EQ-5D-5L, Myasthenia Gravis Activities of Daily Living, Myasthenia Gravis Quality of Life 15-item revised scale, Hospital Anxiety and Depression Scale and Health Utilities Index III. Analyses are planned for when the study has been running in most countries for approximately 6, 12, 18 and 24 months. ETHICS AND DISSEMINATION: The study protocol has been reviewed and granted ethics approval by Salus IRB for participants resident in the following countries: Germany, the UK and the US. Local ethics approval is being sought for the following study countries: Belgium, Canada, France, Italy, Japan and Spain. Study results will be communicated to the public and participants via conference presentations and journal publications, as well as regular email, social media and in-application communication. TRIAL REGISTRATION NUMBER: NCT04176211.

Patient-reported impact of Charcot-Marie-Tooth disease: protocol for a real-world digital lifestyle study.

Charcot-Marie-Tooth disease (CMT) is a rare, chronic, progressive motor and sensory neuropathy affecting the peripheral nervous system. This study will explore the real-world impact of CMT. The trial is a digital study of approximately 2000 people in 6 countries with CMT ≥18 years. Participants will use a smartphone application to check eligibility, provide consent and contribute data. The dataset will include a personal profile, covering demographics, lifestyle, diagnosis and treatment and a selection of validated generic and disease-specific instruments. Participants will provide data for up to 2 years. Data analysis will be conducted upon registration of the 1000th participant and at 12-month intervals from launch. This study is designed to help researchers and clinicians understand the real-world impact of CMT and the unmet needs of patients. ClinicalTrials.gov identifier: NCT03782883.