- Short-term Period: Number of Participants With Clinically Meaningful Improvement (CMI) in Disease Activity Score (DAS 28), Low Disease Activity (LDAS), or Remission at Day 169 [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
The DAS 28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). A clinically significant response= decrease in DAS28 score of >1.2 from baseline.
- Short-term Period: Mean Time-matched Baseline (Day 0) DAS 28 and DAS 28 for Post-Baseline Visits Through 6 Month Open-Label [ Time Frame: BL (Day 0), Day 15, Day 29, Day 57, Day 85, Day 113, Day 141, Day 169 ] [ Designated as safety issue: No ]
The DAS 28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). Time-matched baseline (Day 0) values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Short-term Period: Mean Time-matched Change From Baseline (Day 0) in DAS 28 Through 6 Month Open-Label [ Time Frame: BL (Day 0), Day 15, Day 29, Day 57, Day 85, Day 113, Day 141, Day 169 ] [ Designated as safety issue: No ]
The DAS28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). Time-matched mean change from BL= Post-BL value - time-matched BL value, where the time-matched BL value represents the mean BL (Day 0) value for only that cohort of participants with measurements available at that post-BL visit.
- Short-term Period: Mean Change From Baseline to Day 169 in High Sensitivity C-Reactive Protein (Hs-CRP) [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
hs-CRP is a acute phase reactant protein that is a clinical marker for Rheumatoid Arthritis (RA). Levels of hs-CRP can be used to determine DAS28.
- Short-term Period: Mean Change From Baseline to Day 169 in Rheumatoid Factor (RF) [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
RF is an autoantibody (antibody directed against an organism's own tissues) most relevant in rheumatoid arthritis. It is an antibody against the Fc portion of Immunoglobulin (Ig)G, which is itself an antibody. RF and IgG join to form immune complexes which contribute to the disease process.
- Short-term Period: Mean Change From Baseline to Day 169 in the Health Assessment Questionnaire Disability Index (HAQ-DI) [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
The HAQ-DI includes 20 questions to assess physical functions in 8 domains: dressing, arising, eating, walking, hygiene, reach, grip and common activities. The domain questions are evaluated on a 4-point scale: 0=without any difficulty, 1= with some difficulty, 2= with much difficulty, and 3= unable to do. HAQ-DI= sum of worst scores in each domain divided by the number of domains answered. HAQ-DI ranges from a minimum of 0 (no difficulty) to a maximum overall score of 3(unable to do).
- Short-term Period: Number of Participants Achieving a Clinically Meaningful HAQ Response [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
HAQ-DI includes 20 questions to assess physical functions in 8 domains: dressing, arising, eating, walking, hygiene, reach, grip and common activities. The domain questions are evaluated on a 4-point scale: 0=without any difficulty, 1= with some difficulty, 2= with much difficulty, and 3= unable to do. HAQ-DI= sum of worst scores in each domain divided by the number of domains answered. HAQ-DI ranges from a minimum of 0 (no difficulty) to a maximum overall score of 3(unable to do). Clinically meaningful HAQ response=an improvement of at least 0.3 units from baseline in HAQ disability Index.
- Short-term Period: Mean Baseline Short Form 36 (SF-36) Quality of Life Physical Component Summary (PCS), Mental Component Summary (MCS), and SF-36 Individual Component Scores [ Time Frame: BL ] [ Designated as safety issue: No ]
The SF-36 is a validated instrument measuring health-related quality of life across multiple disease states. It has 36 questions with 8 subscale scores and 2 summary scores (1) physical component summary=physical functioning, role-physical, bodily pain, and general health; (2) mental component summary=vitality, social functioning, role-emotional, and mental health. There is no total overall score; scoring is done for both subscores and summary scores. For subscores and summary scores, 0 =worst score (or quality of life) and 100=best score. Change from Baseline= post-Baseline - Baseline value.
- Short-term Period: Mean Change From Baseline to Day 169 in SF-36 PCS, MCS, and SF-36 Individual Component Scores [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
The SF-36 is a validated instrument measuring health-related quality of life across multiple disease states. It has 36 questions with 8 subscale scores and 2 summary scores (1) physical component summary=physical functioning, role-physical, bodily pain, and general health; (2) mental component summary=vitality, social functioning, role-emotional, and mental health. There is no total overall score; scoring is done for both subscores and summary scores. For subscores and summary scores, 0 =worst score (or quality of life) and 100=best score. Change from Baseline= post-Baseline - Baseline value.
- Short-term Period: Mean Baseline Fatigue Visual Analog Scale (VAS) [ Time Frame: BL ] [ Designated as safety issue: No ]
The VAS for Fatigue (VAS-F) consists of a 100 mm line, with 0 (No Fatigue) on 1 end and 100 (Extreme Fatigue) on the other end, which a participant marks to indicate how much fatigue he or she feels. The marked point in mm is converted into a numeric value from 0 to 100, where 0=no fatigue and 100=maximum fatigue. Increasing numbers=increasing fatigue.
- Short-term Period: Mean Change From Baseline to Day 169 in Fatigue Visual Analog Scale (VAS) [ Time Frame: BL, Day 169 ] [ Designated as safety issue: No ]
The VAS for Fatigue (VAS-F) consists of a 100 mm line, with 0 (No Fatigue) on 1 end and 100 (Extreme Fatigue) on the other end, which a participant marks to indicate how much fatigue he or she feels. The marked point in mm is converted into a numeric value from 0 to 100, where 0=no fatigue and 100=maximum fatigue. Increasing numbers=increasing fatigue.
- Long-term Period: Number of Participants With Clinically Meaningful Improvement in DAS 28, Low Disease Activity, or Remission Over Time [ Time Frame: BL, Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The DAS28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). A clinically significant response= decrease in DAS28 score of >1.2 from baseline.
- Long-term Period: Mean Time-matched Baseline (Day 0) DAS 28 and DAS 28 for Post-Baseline Visits Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The DAS28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). Time-matched baseline (Day 0)values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in DAS 28 Over The Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The DAS28 is a continuous disease measure which is a composite of 4 variables: the 28 tender joint count, the 28 swollen joint count, ESR or CRP, and participant assessment of disease activity measure on a visual analogue scale. The DAS28 has numeric thresholds that define high disease activity (> 5.1), low disease activity (< 3.2) and remission (< 2.6). Time-matched mean change from BL= Post-BL value - time-matched BL value, where the time-matched BL value represents the mean BL(Day 0)value for only that cohort of participants with measurements available at that post-BL visit.
- Long-term Period: Mean Time-matched Baseline (Day 0) Number of Tender Joints and Number of Tender Joints for Post-Baseline Visits Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The mean number of tender joints was evaluated based on the number of tender joints in a standard 68 joint count. Time-matched baseline (Day 0) values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in Number of Tender Joints Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The mean number of tender joints was evaluated based on the number of tender joints in a standard 68 joint count. Time-matched mean change from baseline = Post-baseline value - time-matched baseline value, where the time-matched baseline value represents the mean baseline (Day 0) value for only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Baseline (Day 0) Number of Swollen Joints And Post-Baseline Number of Swollen Joints Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The mean number of swollen joints was evaluated based on the number of swollen joints in a standard 66 joint count. Time-matched baseline (Day 0) values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-Matched Change From Baseline (Day 0) in Number of Swollen Joints Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The mean number of swollen joints was evaluated based on the number of swollen joints in a standard 66 joint count. Time-matched mean change from baseline = Post-baseline value - time-matched baseline value, where the time-matched baseline value represents the mean baseline (Day 0) value for only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Baseline (Day 0) Hs-CRP Levels and Hs-CRP Levels for Post-Baseline Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
hs-CRP is a acute phase reactant protein that is a clinical marker for Rheumatoid Arthritis (RA). Levels of hs-CRP can be used to determine DAS28. Time-matched baseline (Day 0) values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in Hs-CRP Level Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
hs-CRP is a acute phase reactant protein that is a clinical marker for Rheumatoid Arthritis (RA). Levels of hs-CRP can be used to determine DAS28. Time-matched mean change from baseline = Post-baseline value - time-matched baseline value, where the time-matched baseline value represents the mean baseline (Day 0) value for only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Baseline (Day 0) Visual Analog Scale (VAS) and VAS for Post-Baseline Visits Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The VAS for Fatigue (VAS-F) consists of a 100 mm line, with 0 (No Fatigue) on 1 end and 100 (Extreme Fatigue) on the other end, which a participant marks to indicate how much fatigue he or she feels. The marked point in mm is converted into a numeric value from 0 to 100, where 0=no fatigue and 100=maximum fatigue. Increasing numbers=increasing fatigue. Time-matched baseline (Day 0) values and post-baseline values were presented for each post-baseline visit, and represent only that cohort of participants with measurements available at that post-baseline visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in VAS Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
The VAS for Fatigue (VAS-F) consists of a 100 mm line, with 0 (No Fatigue) on 1 end and 100 (Extreme Fatigue) on the other end, which a participant marks to indicate how much fatigue he or she feels. The marked point in mm is converted into a numeric value from 0 to 100, where 0=no fatigue and 100=maximum fatigue. Increasing numbers=increasing fatigue. Time-matched mean change from BL = Post-BL value - time-matched BL value, where the time-matched BL value represents the mean BL (Day 0) value for only that cohort of participants with data available at that post-BL visit.
- Long-term Period: Mean Time-matched Baseline (Day 0) HAQ-DI and HAQ-DI Component Scores For Participant Cohorts at Each Corresponding Post-baseline Visit Over the Long Term [ Time Frame: BL (Day 0) ] [ Designated as safety issue: No ]
HAQ-DI includes 20 questions to assess physical functions in 8 domains:dressing, arising,eating,walking, hygiene, reach, grip and common activities. Domain questions are evaluated on a 4-point scale: 0=without any difficulty, 1=with some difficulty, 2=with much difficulty, and 3=unable to do. HAQ-DI= sum of worst scores in each domain divided by number of domains answered. HAQ-DI minimum=0 (no difficulty), max overall score=3(unable to do). Time-matched BL(Day 0)values presented for each post-BL visit represent only that cohort of participants with measurements available at that post-BL visit.
- Long-term Period: Mean HAQ-DI and HAQ-DI Component Scores For Participant Cohorts at Post-baseline Visits Over the Long Term [ Time Frame: Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
HAQ-DI includes 20 questions to assess physical functions in 8 domains:dressing, arising, eating, walking, hygiene, reach, grip and common activities. Domain questions are evaluated on a 4-point scale: 0=without any difficulty, 1=with some difficulty, 2=with much difficulty, and 3=unable to do. HAQ-DI= sum of worst scores in each domain divided by number of domains answered. HAQ-DI minimum=0(no difficulty), max overall score=3(unable to do). Post-BL values presented for each visit represent only that cohort of participants with measurements available at that post-BL visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in HAQ-DI and HAQ-DI Components For Participant Cohorts at Each Corresponding Post-baseline Visit Over the Long Term [ Time Frame: BL (Day 0), Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
HAQ-DI includes 20 questions assessing physical functions in 8 domains:dressing,arising,eating,walking,hygiene,reach,grip and common activities.Domain questions evaluated on 4-point scale: 0=without any difficulty,1=with some difficulty,2=with much difficulty,and 3=unable to do. HAQ-DI=sum of worst scores in each domain ÷ number of domains answered. HAQ-DI minimum=0 (no difficulty), max overall score=3(unable to do). Time-matched mean change from BL= Post-BL value - time-matched BL value. Time-matched BL value=mean BL (Day 0)value for only that cohort with data available at that post-BL visit.
- Long-term Period: Number of Participants Achieving Clinically Meaningful HAQ Response Over Time [ Time Frame: BL, Days 365, 449, 533, 617, 729, 813 ] [ Designated as safety issue: No ]
HAQ-DI includes 20 questions to assess physical functions in 8 domains: dressing, arising, eating, walking, hygiene, reach, grip and common activities. The domain questions are evaluated on a 4-point scale: 0=without any difficulty, 1= with some difficulty, 2= with much difficulty, and 3= unable to do. HAQ-DI= sum of worst scores in each domain divided by the number of domains answered. HAQ-DI ranges from a minimum of 0 (no difficulty) to a maximum overall score of 3(unable to do). Clinically meaningful HAQ response=an improvement of at least 0.3 units from baseline in HAQ disability Index.
- Long-term Period: Mean Time-matched Baseline (Day 0) SF-36 PCS, MCS, and SF-36 Individual Component Scores For Participant Cohorts at Each Corresponding Post-baseline Visit Over the Long Term [ Time Frame: BL (Day 0) ] [ Designated as safety issue: No ]
SF-36 has 36 questions with 8 subscale scores and 2 summary scores (1) physical component summary=physical functioning, role-physical, bodily pain, and general health;(2) mental component summary=vitality,social functioning,role-emotional, and mental health. There is no total overall score; scoring is done for both subscores and summary scores. For subscores and summary scores, 0 =worst score and 100=best score. Time-matched BL (Day 0) values presented for each post-BL visit represent only that cohort of participants with measurements available at that post-BL visit
- Long-term Period: Mean SF-36 PCS, MCS, and SF-36 Individual Component Scores For Participant Cohorts at Each Post-baseline Visits Over the Long Term [ Time Frame: Days 365 and 729 ] [ Designated as safety issue: No ]
SF-36 measures health-related quality of life and has 36 questions with 8 subscale scores and 2 summary scores (1)physical component summary=physical functioning,role-physical,bodily pain,and general health; (2)mental component summary=vitality,social functioning,role-emotional,and mental health. There is no total overall score; scoring is done for both subscores and summary scores. For subscores and summary scores, 0=worst score and 100=best score. Post-BL values presented for each post-BL visit represent only that cohort of participants with measurements available at that post-BL visit.
- Long-term Period: Mean Time-matched Change From Baseline (Day 0) in SF-36 PCS, MCS, and SF-36 Individual Component Scores For Participant Cohorts at Each Corresponding Post-baseline Visit Over the Long Term [ Time Frame: BL (Day 0), Days 365, 729 ] [ Designated as safety issue: No ]
SF-36 has 36 questions with 8 subscale scores and 2 summary scores (1)physical component summary=physical functioning,role-physical,bodily pain,and general health; (2)mental component summary=vitality,social functioning,role-emotional,and mental health. There is no total overall score; scoring is done for both subscores and summary scores. For subscores and summary scores, 0=worst score and 100=best score. Time-matched mean change from BL= Post-BL value - time-matched BL value. Time-matched BL value=mean BL (Day 0)value for only that cohort with data available at that post-baseline visit.
- LT; Number of Participants With Positive Anti-Abatacept or Anti-Cytotoxic T-Lymphocyte Antigen 4 (CTLA4) Responses by ELISA [ Time Frame: Days 1-813 ] [ Designated as safety issue: Yes ]
Serum samples from all treated adult participants with active rheumatoid arthritis (RA) were screened for the presence of drug-specific antibodies using ELISA. Immunogenicity was defined as the presence of a positive anti-abatacept or anti-CTLA4 antibody.