| Primary | Percentage of Participants With at Least 2-step Reduction in Vitreous Haze (VH) or Prednisone Dose <10 mg/Day at Week 16 | At least 2-step reduction in VH per central review from baseline was evaluated on Miami 9-step scale. VH is the obscuration of fundus by vitreous cells and protein exudation. Each of the 9-step scale (from grade 0 [low opacity] to 8 [more opacity]) images (in increasing order of opacity) are equivalent to approximately 0.3 log units of degradation in visual acuity based on the Bangerter calibration. Participants with prednisone dose <10 mg/day (or equivalent oral corticosteroid) were also evaluated. | Modified intent-to-treat population (mITT) included all randomized participants who received at least 1 injection analyzed according to the group to which the participant was allocated by the randomization schedule. Modified multiple imputation approach was used on VH missing adjudicated scores. | Posted | | Number | | Percentage of participants | | Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| | Group IDs | Group Description | Statistical Method | Statistical Comment | P-Value | P-Value Comment | Parameter Type | Parameter Value | Dispersion Type | Dispersion Value | Confidence Interval Sides | Confidence Interval % | CI Lower Limit | CI Upper Limit | CI Lower Limit Comment | CI Upper Limit Comment | Estimate Comment | Tested Non-Inferiority | Non-Inferiority Type | Non-Inferiority Comment | Other Analysis Description |
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| Analysis was performed using combined estimate for odds ratio obtained by combining the log-transformation of odds ratio from Cochran Mantel-Haenszel (CMH) analyses of the different imputed datasets, using Rubin's formulae, and then by back-transforming the combined estimate. The CMH analyses were adjusted for randomization stratification factor VH level (VH >= 4 versus VH <4). | Cochran-Mantel-Haenszel | | 0.2354 | Threshold for significance at 0.05 level. | Odds Ratio (OR) | 2.1 | | | 2-Sided | 90 | 0.8 | 5.6 | | | Sarilumab 200 mg q2w vs Placebo | | |
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| Secondary | Change From Baseline in VH Scale at Week 16 | Change from baseline in VH scale was evaluated on Miami 9-step scale. VH is the obscuration of fundus by vitreous cells and protein exudation. Each of the 9-step scale (from grade 0 [low opacity] to 8 [more opacity]) images (in increasing order of opacity) were equivalent to approximately 0.3 log units of degradation in visual acuity based on the Bangerter calibration. Least squares (LS) mean was calculated using mixed model for repeated measurements (MMRM) model with treatment groups, visits and visit-by-treatment groups interaction as fixed categorical effects as well as fixed continuous covariate of baseline adjudicated VH. | Analysis was performed on mITT population. Number of participants analyzed = participants with VH assessment at baseline and post-baseline visits. | Posted | | Least Squares Mean | Standard Error | units on a scale | | Baseline to Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Percentage of Participants With Anterior Chamber (AC) Cell Score = 0 or At Least 2-step Reduction in Score at Week 16 | Participants with AC cell score = 0 or with ≥2 step reduction from baseline at Week 16 were evaluated. Slit lamp examinations were conducted at each visit to assess AC cell count. The number of AC cells observed within a 1 mm × 1 mm slit beam was used to determine the grade according to the Standardization of Uveitis Nomenclature (SUN) criteria: grade 0 = no cells; grade +0.5 = 1 - 5 cells; grade +1 = 6 - 25 cells; grade +2= 26 - 50 cells; grade +3 = too many to count. | Analysis was performed on mITT population. Number of participants analyzed = participants with non-missing AC cell score at Week 16. | Posted | | Number | | Percentage of participants | | Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Change From Baseline in Best Corrected Visual Acuity (BCVA) Score at Week 16 | BCVA score is based on the number of letters read correctly on the Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity chart assessed at a starting distance of 4 meters, and then at 1 meter. The range of ETDRS is 0 to 100 letters. The lower the number of letters read correctly on the eye chart, the worse the vision (or visual acuity). An increase in the number of letters read correctly means that vision has improved. LS mean was calculated using MMRM model with treatment groups, randomization strata of VH level (<4, >=4), visits and visit-by-treatment groups interaction as fixed categorical effects, as well as, fixed continuous covariate of baseline BCVA. | Analysis was performed on mITT population. Number of participants analyzed = participants with BCVA score assessment at baseline and post-baseline visits. | Posted | | Least Squares Mean | Standard Error | units on a scale | | Baseline to Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Change From Baseline in Central Retinal Thickness (CRT) At Week 16 | CRT was measured by spectral domain optical coherence tomography (SD-OCT), a non-invasive diagnostic system providing high-resolution imaging sections of the retina. All images were transmitted to the central reading center. SD-OCT was performed in the study eye after pupil dilation. LS mean was calculated using MMRM model with treatment groups, randomization strata of VH level (<4, >=4), visits and visit-by-treatment groups interaction as fixed categorical effects, as well as, fixed continuous covariate of baseline CRT. | Analysis was performed on mITT population. Number of participants analyzed = participants with CRT assessment at baseline and post-baseline visits. | Posted | | Least Squares Mean | Standard Error | µm (microns) | | Baseline to Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Percent Change From Baseline in CRT at Week 16 | CRT was measured by SD-OCT, a non-invasive diagnostic system providing high-resolution imaging sections of the retina. All images were transmitted to the central reading center. SD-OCT was performed in the study eye after pupil dilation. LS mean was calculated using MMRM model with treatment groups, randomization strata of VH level (<4, >=4), visits and visit-by-treatment groups interaction as fixed categorical effects, as well as, fixed continuous covariate of baseline CRT. | Analysis was performed on mITT population. Number of participants analyzed = participants with CRT assessment at baseline and post-baseline visits. | Posted | | Least Squares Mean | Standard Error | percent change | | Baseline to Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Percentage of Participants With CRT Thickness <300 Microns at Week 16 | | This endpoint was replaced by the percent change from baseline in CRT at Week 16 as this is more clinically relevant. Zero participant was analyzed. | Posted | | | | | | Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Percentage of Participants Without Retinal Vessel Leakage on Fluorescein Angiography (FA) at Week 16 | | Analysis of this endpoint was not performed as no retinal vessel leakage data was collected at Week 16. Zero participants were analyzed. | Posted | | | | | | Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Percentage of Participants With Prednisone Dose of ≤5 mg/Day (or Equivalent Oral Corticosteroid) at Week 16 | Participants with prednisone dose ≤5 mg/day (or equivalent oral corticosteroid) at Week 16 were evaluated. | Analysis was performed on mITT population. Number of participants analyzed = participants with non-missing data for prednisone (or equivalent oral corticosteroid) dose at Week 16. | Posted | | Number | | Percentage of participants | | Week 16 | | | | ID | Title | Description |
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| OG000 | Placebo (Part A) | Placebo (for Sarilumab) SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. | | OG001 | Sarilumab 200 mg q2w (Part A) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. |
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| Secondary | Pharmacokinetics (PK) Assessment: Serum Functional Sarilumab Concentration | Serum functional (unbound) sarilumab concentrations were determined using an enzyme-linked immunosorbent assay (ELISA) method with a lower limit of quantification (LLOQ) of 294 ng/mL. Concentrations below LLOQ were set to zero for samples at predose. Post-treatment concentrations below LLOQ were replaced by LLOQ/2. The samples were considered non-eligible for the analysis if the previous dosing time was <11 days or >17 days before the sampling time for every other week regimens. | PK population: all participants who received at least one dose or part of a dose of investigational medicinal product (IMP) with at least one post-dose, non-missing serum concentration value and were analyzed according to treatment actually received. Data of this endpoint was planned to be analyzed for Sarilumab 200 mg q2w arm in Part A and B only. | Posted | | Mean | Standard Deviation | ng/mL | | Predose on Day 1 (Baseline), Week 2, 4, 8, 12, 16, 24, 36, 52, and end of study (EOS) (Week 56) | | | | ID | Title | Description |
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| OG000 | Sarilumab 200 mg q2w (Part A + Part B) | Sarilumab 200 mg SC injection q2w for 16 weeks during principal treatment period (Part A) with background therapy of Prednisone (or equivalent oral corticosteroid) ≥15 mg/day and <80 mg/day as single therapy or in combination with MTX 10 to 25 mg/week and folic acid per local prescribing practice. Responders continued with the same treatment regimen up to Week 50 during extension treatment period (Part B). |
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