| Primary | Mean Number of New Inflammatory MRI Lesions Per Monthly Scans | The mean number of new inflammatory MRI lesions obtained on scans every 4 weeks from Week 8 to Week 24, adjusted for differences between subjects before treatment by subtracting the number of new inflammatory lesions observed from the week -1 MRI scan . An inflammatory lesion is defined as a gadolinium (Gd)-enhancing lesion that shows hyperintensity on postcontrast but no hyperintensity on noncontrast T1 images. A new inflammatory lesion is one that was not present on the previously scheduled MRI scan. If the previously scheduled MRI scan was missing, the scan was compared to the last available MRI. | | Posted | | Mean | Standard Deviation | New Lesions | | Weeks 8-24 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
| | | Title | Denominators | Categories |
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| | | Title | Measurements |
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| - OG0000.4± 0.9
- OG0011.7± 3.6
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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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| | Wilcoxon (Mann-Whitney) | | 0.87 | Analysis was stratified on the presence or absence of subclinical activity as demonstrated by a Gd-enhanced lesion on one MRI in the past year prior to enrollment. | | | | | 2-Sided | | | | | | | No | Superiority or Other | | |
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| Secondary | Absolute Number of New Inflammatory MRI Lesions on Monthly Scans | The absolute number of new inflammatory MRI lesions obtained on scans every 4 weeks from Week 8 to Week 24. An inflammatory lesion is defined as a gadolinium (Gd)-enhancing lesion that shows hyperintensity on postcontrast but no hyperintensity on noncontrast T1 images. A new inflammatory lesion is one that was not present on the previously scheduled MRI scan. If the previously scheduled MRI scan was missing, the scan was compared to the last available MRI. | | Posted | | Mean | Standard Deviation | New Lesions | | Weeks 4-24 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Lesion Volume Accumulation on T2-weighted MRI Scans Over 24 Weeks | Difference in total volume of all T2 lesions detected at Week 24 MRI scan compared to Week -1 MRI scan. A T2 lesion is defined as an abnormal, hyperintense white-matter area visible on T2 weighted images. A higher score indicates more severe multiple sclerosis. | Intent-to-treat population that did not terminate study prior to Week 24 | Posted | | Mean | Standard Deviation | cm^3 | | Week -1 to Week 24 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Percent Brain Volume Change | Percent Brain Volume Change is a measure of brain atrophy. Brain volume was calculated from a MRI scan at Week -1 and a MRI scan at Week 24 then the percent change from Week -1 to Week 24 was calculated. A negative change score means volume decreased. A decrease in volume indicates progression of multiple sclerosis severity. | Intent-to-treat population that did not terminate study prior to Week 24 and had MRI scans at both Week -1 and Week 24 | Posted | | Mean | Standard Deviation | percent change | | Week -1 to Week 24 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Mean Number of New Inflammatory Lesions in 8-week Intervals | The mean number of new inflammatory MRI lesions obtained on scans every 8 weeks from Week 8 to Week 24. An inflammatory lesion is defined as a gadolinium (Gd)-enhancing lesion that shows hyperintensity on postcontrast but no hyperintensity on noncontrast T1 images. A new inflammatory lesion is one that was not present on the previously scheduled MRI scan. If the previously scheduled MRI scan was missing, the scan was compared to the last available MRI. | | Posted | | Mean | Standard Deviation | New Lesions | | Week 8 to Week 24 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Number of Participants Progressing on the EDSS Scale by at Least 1 Point | The Expanded Disability Status Scale (EDSS) is an assessment for severity of multiple sclerosis. The EDSS an ordinal clinical rating scale ranging from 0 (normal neurological examination) to 10 (death due to multiple sclerosis) in half-point increments. Baseline EDSS score was the lowest score observed at either visit -2 (Wk -5) or visit -1 (Wk -1). EDSS progression is defined as an increase of at least 1 point on the EDSS compared to baseline if the baseline was greater than 1.0, or 1.5 points on EDSS if baseline was less than or equal to 1.0, which persisted for a minimum of 12 weeks or was found on three consecutive EDSS assessments starting at Visit 3 (Wk 8). | | Posted | | Number | | participants | | Week -1 to Week 24 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Annualized Relapse Rate | The rate of multiple sclerosis relapse by year. Annualized relapse rate is calculated by dividing the total number of relapse events in the core phase in each treatment group by the total number of days participants participated in the study during the core phase. This number is then multiplied by 365.25 to get an annualized rate. | | Posted | | Number | | Relapse Rate by Year | | Week -1 to Week 24 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Mean Change in the MSFC Over 24 Weeks of Treatment | The Multiple Sclerosis Functional Composite (MSFC) is a three-part, standardized, quantitative assessment instrument to measure severity of multiple sclerosis. The MSFC combines three component measures to create a composite measure. The three component measures of the MSFC include the 1) Time 25-foot Walk (a measure of lower extremity function), 2) 9-hole Peg Test (a measure of upper extremity function), and 3) Paced Auditory Serial Addition Test (a measure of cognitive function). Mean change in MSFC scores from baseline to Week 24 were assessed. Scores from all three components are combined then are converted into a Z-score for analyses, with a range from -1 to 1. A positive score indicates improvement in the severity of multiple sclerosis symptoms while negative scores indicate decline in multiple sclerosis symptoms. | | Posted | | Mean | Standard Deviation | Scores on a scale | | Week -1 to Week 24 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept |
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| Secondary | Mean Number of New Inflammatory MRI Lesions Per Scan During the Extension Phase | The mean number of new inflammatory MRI lesions obtained on scans at Weeks 36 and 52, adjusted for differences between subjects before treatment by subtracting the number of new inflammatory lesions observed from the week 24 MRI scan. An inflammatory lesion is defined as a gadolinium (Gd)-enhancing lesion that shows hyperintensity on postcontrast but no hyperintensity on noncontrast T1 images. A new inflammatory lesion is one that was not present on the previously scheduled MRI scan. If the previously scheduled MRI scan was missing, the scan was compared to the last available MRI. | Intent-to-treat in Extension Phase | Posted | | Mean | Standard Deviation | New Lesions | | Weeks 36 and 52 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Lesion Volume Accumulation on T2-Weighted MRI Scans Between 24 Weeks and 52 Weeks | Difference in total volume of all T2 lesions detected at Week 52 MRI scan compared to Week 24 MRI scan. A T2 lesion is defined as an abnormal, hyperintense white-matter area visible on T2 weighted images. A higher score indicates more severe multiple sclerosis. | Intent-to-treat in Extension Phase who had an MRI at Week 52 | Posted | | Mean | Standard Deviation | cm^3 | | Week 24 to Week 52 | | | | ID | Title | Description |
|---|
| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Percent Brain Volume Change Between 24 Weeks and 52 Weeks | Percent Brain Volume Change is a measure of brain atrophy. Brain volume was calculated from a MRI scan at Week 24 and a MRI scan at Week 25 then the percent change from Week 24 to Week 52 was calculated. A negative change score means volume decreased. A decrease in volume indicates progression of multiple sclerosis severity. | Intent-to-treat in Extension Phase who had an MRI at Week 52 with data to contribute to brain volume measurements | Posted | | Mean | Standard Deviation | Percent change | | Week 24 to Week 52 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Number of Participants Progressing on the EDSS Scale by at Least 1 Point | The Expanded Disability Status Scale (EDSS) is an assessment for severity of multiple sclerosis. The EDSS an ordinal clinical rating scale ranging from 0 (normal neurological examination) to 10 (death due to multiple sclerosis) in half-point increments. Extension baseline EDSS score was the most recent non-missing value on or before Week 28. Only participants who scored between a 0 and a 5 at baseline were analyzed for this outcome measure. EDSS progression is defined as an increase of at least 1 point on the EDSS compared to baseline if the baseline was greater than 1.0, or 1.5 points on EDSS if baseline was less than or equal to 1.0, which persisted for a minimum of 12 weeks or was found on three consecutive EDSS assessments starting at Visit 3 (Wk 8). | Intent-to-treat in Extension Phase | Posted | | Number | | participants | | Week 24 to Week 64 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept |
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| Secondary | Annualized Relapse in Extension Phase | The rate of multiple sclerosis relapse by year. Annualized relapse rate is calculated by dividing the total number of relapse events in the extension and follow-up phases in each treatment group by the total number of days participants participated in the study during the extension and follow-up phases. This number is then multiplied by 365.25 to get an annualized rate. | Intent-to-treat in Extension Phase | Posted | | Number | | Relapse Rate by Year | | Week 24 to Week 64 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 | Placebo First, Then Abatacept | Subjects received placebo IV at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received abatacept IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows. Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. |
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| Secondary | Mean Change in the MSFC in Extension Phase | The Multiple Sclerosis Functional Composite (MSFC) is a three-part, standardized, quantitative assessment instrument to measure severity of multiple sclerosis. The MSFC combines three component measures to create a composite measure. The three component measures of the MSFC include the 1) Time 25-foot Walk (a measure of lower extremity function), 2) 9-hole Peg Test (a measure of upper extremity function), and 3) Paced Auditory Serial Addition Test (a measure of cognitive function). Mean change in MSFC scores from Week 24 to Week 52 were assessed. Scores from all three components are combined then are converted into a Z-score for analyses, with a range from -1 to 1. A positive score indicates improvement in the severity of multiple sclerosis symptoms while negative scores indicate decline in multiple sclerosis symptoms. | Intent-to-treat in Extension Phase who Completed the MSFC at Week 52 | Posted | | Mean | Standard Deviation | Scores on a scale | | Week 24 to Week 52 | | | | ID | Title | Description |
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| OG000 | Abatacept First, Then Placebo | Subjects received abatacept intravenously (IV) at weeks 0, 2, and 4, and then every 4 weeks through week 24. After week 24, participants eligible for the extension phase of the trial received placebo IV on weeks 28, 30, and 32 then every 4 weeks until week 52. Participants completed an additional 12 weeks of observation until week 64. Dosing of abatacept was as follows:Participants weighing less than 60 kg received 500 mg; 60-100 kg received 750 mg; and greater than 100 kg received 1 g. | | OG001 |
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