Taper Or Abrupt Steroid Stop: TOASSTtrial — StellaPhase 4 — Post-approval study. The treatment has been approved, but researchers continue monitoring it in a large population over time.
Trial locations(16 sites)
Germany
University Hospital Frankfurt, Frankfurt University Hospital Würzburg, Würzburg Switzerland
Departement of Internal Medicine, Kantonsspital Aarau, Aarau Kantonsspital Baden, Baden Endocrinology/Diabetology/Metabolism; University Hospital Basel, Basel St. Claraspital Basel, Basel Department of Rheumatology, Immunology, and Allergology, Inselspital, Bern Division of Gastroenterology, Spital Bülach AG, Bülach Kantonsspital Frauenfeld, Frauenfeld Geneva University Hospitals, Geneva Center for Primary Health Care,University of Basel, Kantonsspital Baselland, Liestal Internal Medicine, Kantonsspital Baselland/Liestal, Liestal Department of Internal Medicine, Kantonsspital Münsterlingen, Münsterlingen Stoffwechselzentrum, Kantonsspital Olten, Olten Department of Internal Medicine, Kantonsspital St. Gallen, Sankt Gallen Dept. of Endocrinology, Diabetology and Clinical Nutrition, University Hospital, Zurich
Age range
18 Years and older
Last updated February 2026