Participants will additionally be offered to record daily activity and sleep patterns as well as heart rate for the duration of the study.
The primary objective of this study is to better understand the pathophysiological background of end-of-dose symptoms (EOD) and thereby determine the percentage of participants who develop EOD under natalizumab (NTZ) as an example of interval therapy in MS and to detect specific changes through multimodal analyses, including radiological, blood and digital health measurements, that may be used as potential biomarkers in the future to map EOD.