Study	Reason for exclusion
EUCTR2020‐001445‐39‐ES	Corticosteroid plus other active substances versus standard care
EUCTR2020‐001616‐18‐ES	Inhaled corticosteroids
EUCTR2020‐001889‐10	Inhaled corticosteroids
IRCT20120225009124N4	Corticosteroid plus other active substances versus standard care
IRCT20190312043030N2	Corticosteroid plus other active substances versus standard care
IRCT20200522047542N1	Topical corticosteroids
ISRCTN86534580	Inhaled corticosteroids
Moreira 2021	The administered antibody (foralumab) was not standard care
Naik 2021	The participants received low‐dose dexamethasone in addition to standard care
NCT04341038	Corticosteroid plus other active substances versus standard care
NCT04355637	Inhaled corticosteroids
NCT04359511	Withdrawn (competitor test RECOVERY)
NCT04361474	Topical corticosteroids
NCT04381364	Inhaled corticosteroids
NCT04411667	Corticosteroid plus other active substances versus standard care
NCT04416399	Inhaled corticosteroids
NCT04468646	Corticosteroid plus other active substances versus standard care
NCT04484493	Topical corticosteroids
NCT04485429	Withdrawn (it was not possible to perform the trial due to the availability and logistics of porcine heparin)
NCT04534478	Corticosteroids for long‐COVID treatment
NCT04551781	Corticosteroids for long‐COVID treatment
NCT04561180	Corticosteroid plus other active substances versus standard care
NCT04569825	Topical corticosteroids
NCT04640168	Corticosteroid plus other active substances versus standard care
NCT04657484	Corticosteroids for long‐COVID treatment
NCT04826822	Corticosteroid plus other active substance versus standard care
NCT05133635	Study was withdrawn because a recent study suggested a new corticosteroid regime for intensive care unit patients, so that no participants were recruited
Odeyemi 2021	Compared bio‐marker adjusted corticosteroid dosing with usual care (corticosteroid use and dosing determined by the physician)