Number of subjects alive and off of oxygen

Number and percentage of subjects alive and off of oxygen at day 14

Number of subjects alive and off of oxygen

Mechanical ventilation is defined as invasive mechanical ventilation (IMV) or extracorporeal membrane oxygenation (ECMO). Mechanical ventilation status was evaluated based on the National Institute of Allergy and Infectious Diseases (NIAID) clinical outcome 8-point ordinal scale. Participants whose clinical outcome met a NIAID score of 2 were considered as using mechanical ventilation. The NIAID score is an 8-point ordinal scale of clinical outcomes: 1=death; 2=hospitalized, on invasive mechanical ventilation or ECMO; 3=hospitalized, on non-invasive ventilation or high flow oxygen devices; 4= hospitalized, requiring supplemental oxygen; 5=hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID 19 related or otherwise); 6=hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7=not hospitalized, limitation on activities and/or requiring home oxygen; 8=not hospitalized, no limitations on activities.

Mechanical ventilation is defined as invasive mechanical ventilation (IMV) or extracorporeal membrane oxygenation (ECMO). Mechanical ventilation status was evaluated based on the National Institute of Allergy and Infectious Diseases (NIAID) clinical outcome 8-point ordinal scale. Participants whose clinical outcome met a NIAID score of 2 were considered as using mechanical ventilation. The NIAID score is an 8-point ordinal scale of clinical outcomes: 1=death; 2=hospitalized, on invasive mechanical ventilation or ECMO; 3=hospitalized, on non-invasive ventilation or high flow oxygen devices; 4= hospitalized, requiring supplemental oxygen; 5=hospitalized, not requiring supplemental oxygen - requiring ongoing medical care (COVID 19 related or otherwise); 6=hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care; 7=not hospitalized, limitation on activities and/or requiring home oxygen; 8=not hospitalized, no limitations on activities.

Defined as the proportion of subjects with mechanical ventilation who have died by Day 29.

Defined as the proportion of subjects with mechanical ventilation who have died by Day 29.

Time to flare by Week 26 was defined as time from randomization to the date of first flare occurring within the 26-week period, as assessed by independent adjudication. Kaplan-Meier method used to estimate the survival functions for each treatment arm. Flare/relapse was defined as a C-reactive protein (CRP) of 1 mg/dL or greater and/or erythrocyte sedimentation rate (ESR) of 30 mm/h or greater AND at least one of the following signs or symptoms attributed to GCA: Cranial symptoms (new-onset localized headache; scalp or temporal artery tenderness; ischemic-related vision loss; unexplained mouth or jaw pain upon mastication; transient ischemic attack or stroke related to GCA); Extracranial symptoms (claudication of the extremities; symptoms of polymyalgia rheumatica); New or worsening angiographic abnormalities detected via MRI, CT/CTA, or PET-CT of the aorta or other great vessels or via ultrasound of the temporal arteries.