Development and Validation of a Standardized Assessment Instrument for Health-related Quality of Life (HrQoL) in Children and Adolescents With Pompe Disease (PD): a Joint Effort of Patients, Caregivers and Metabolic Experts

Health related quality of life (HrQoL), is "the patient's subjective perception of the impact of his disease and its treatment on his daily life, physical, psychological and social functioning and well-being" and thus constitutes a patient reported outcome (PRO) of utmost importance. Generic HrQoL instruments can by definition not capture disease-specific parameters nor are they sensitive enough to detect their changes. In this study, a disease-specific HrQoL questionnaire for children and adolescents will be developed. Patients and parents will be involved in focus groups and interviews to identify relevant contents. The instrument will be tested for validity and reliability.