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Effects of Tofacitinib (CP-690,550) on Magnetic Resonance Imaging (MRI)- Assessed Joint Structure In Early Rheumatoid Arthritis (RA)

An Exploratory Phase 2, Randomized, Double-blind, Multicenter Study To Assess The Effects Of Tofacitinib (Cp-690,550) On Magnetic Resonance Imaging Endpoints, In Methotrexate Naive Subjects With Early Active Rheumatoid Arthritis

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01164579
Enrollment
109
Registered
2010-07-16
Start date
2010-10-31
Completion date
2013-11-30
Last updated
2015-04-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Rheumatoid Arthritis

Keywords

Early Rheumatoid Arthritis, Joint Structure, Magnetic Resonance Imaging, Janus Kinase (JAK) Inhibitor, Tasocitinib, Tofacitinib

Brief summary

Evaluation of efficacy and safety of tofacitinib (CP-690,550) for the treatment of early rheumatoid arthritis in adult patients with moderate to severe disease who are methotrexate naïve. The efficacy will be evaluated by exploring the effects on joint structure assessed by magnetic resonance imaging, x-rays and by standard clinical assessment.

Interventions

DRUGTasocitinib plus Methotrexate

Tofacitinib (CP 690,550) 10 mg BID, tablets + methotrexate (MTX) 10 mg/wk to 20 mg/wk, titrated over 2 months

DRUGTofacitinib plus placebo methotrexate

Tofacitinib (CP-90,550) 10 mg BID, tablets. Placebo to match methotrexate (MTX) capsules titrated as in Treatment Arm 1.

DRUGPlacebo tofacitinib plus Methotrexate

Methotrexate (MTX) 10 mg/wk to 20 mg/wk, capsules, titrated over 2 months. Placebo in tablets to match tofacitinib

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult patients with moderate to severe early rheumatoid arthritis (\< 2 years) who are methotrexate and biologic disease modifying antirheumatic drug naive.

Exclusion criteria

* Pregnant or lactating patients; * Patients with renal or hepatic impairment or other severe or progressing disease; * Patients with contraindication to magnetic resonance imaging with gadolinium contrast.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline to Month 3 in Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) Wrist and Metacarpophalangeal (MCP) SynovitisMonth 3Synovitis is defined as an area in the synovial compartment that shows above normal postgadolinium enhancement of a thickness greater than the width of the normal synovium. T1-weighted images were acquired before and after the administration of intravenous contrast agent containing gadolinium. Intravenous contrast was required to demonstrate enhancing synovitis. Synovitis was scored 0 to 3 in 3 wrist regions and in each of the first through fifth MCP joints. A score of 0 is normal, with no enhancement or enhancement up to the thickness of normal synovium, while scores of 1 to 3 (mild, moderate, severe) refer to increments of one-third of the presumed maximum volume of enhancing tissue in the synovial compartment. Total synovitis score ranges from a minimum of 0 to a maximum of 24. A negative value in synovitis change from Baseline score indicates an improvement.
Change From Baseline to Month 6 in OMERACT RAMRIS Wrist and MCP Bone Marrow EdemaMonth 6Bone edema was assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Bone edema was defined as a lesion within the trabecular bone, with ill-defined margins and signal characteristics consistent with increased water content. Each bone was scored separately; the scale was 0-3 based on the proportion of bone with edema, as follows 0: no edema; 1: 1-33% of bone edematous; 2: 34-66% of bone edematous; 3: 67-100%. OMERACT RAMRIS total bone edema score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist was 75 (range 0-75). Increasing score=greater severity.

Secondary

MeasureTime frameDescription
Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonths 1, 3, 6, and 12Bone erosion assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Each site was scored in 1.0 increments from 0 (no damage) to 10 (severe damage), indicating erosion (each unit=10% bone loss) of original articular bone. OMERACT RAMRIS total erosion score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist is 250 (range 0-250). Increasing score=greater severity.
Modified Total Sharp Score (mTSS) at Months 6 and 12Months 6 and 12Modified TSS is a measure of change in joint health. TSS is defined as joint space narrowing score (range 0 \[no narrowing\] to 168 \[high narrowing\]) plus (+) erosion score (range is from 0 \[no erosion\] to 280 \[high erosion\]). The modified TSS range is from 0 (no damage) to 448 (bad joint status). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Change From Baseline to Months 6 and 12 in mTSSMonths 6 and 12Modified TSS is a measure of change in joint health. TSS is defined as joint space narrowing score (range 0 \[no narrowing\] to 168 \[high narrowing\]) + erosion score (range is from 0 \[no erosion\] to 280 \[high erosion\]). The modified TSS range is from 0 (no damage) to 448 (bad joint status). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Joint Space Narrowing (JSN) Scores at Months 6 and 12Months 6 and 12JSN score (a component of the modified TSS) is a measure of change in joint health. JSN score range is 0 (no narrowing) to 168 (high narrowing). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Change From Baseline to Months 6 and 12 in JSN ScoresMonths 6 and 12JSN score (a component of the modified TSS) is a measure of change in joint health. JSN score range is 0 (no narrowing) to 168 (high narrowing). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Erosion Scores at Months 6 and 12Months 6 and 12Erosion score (a component of the modified TSS) is a measure of change in joint health. Erosion score range is from 0 (no erosion) to 280 (high erosion). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Change From Baseline to Months 6 and 12 in Erosion ScoreMonths 6 and 12Erosion score (a component of the modified TSS) is a measure of change in joint health. Erosion score range is from 0 (no erosion) to 280 (high erosion). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.
Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonths 1, 2, 3, 6, 9, and 12ACR20 response: greater than or equal to (≥)20% improvement in tender joint count; ≥20% improvement in swollen joint count; and ≥20% improvement in at least 3 of 5 remaining ACR core measures: Participant's Assessment of Pain; Participant's Global Assessment of Disease Activity; Physician Global Assessment of Disease Activity; self-assessed disability (disability index of the Health Assessment Questionnaire \[HAQ\]); and C-Reactive Protein (CRP).
Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonths 1, 2, 3, 6, 9, and 12ACR50 response: ≥ 50% improvement in tender or swollen joint counts and 50% improvement in 3 of the following 5 criteria: 1) Physician's Global Assessment of Disease Activity, 2) Participant's Assessment of disease activity, 3) Paricipant's Assessment of Pain, 4) Participant's assessment of functional disability via a HAQ, and 5) CRP at each visit.
Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonths 1, 2, 3, 6, 9, and 12ACR70 response: ≥70% improvement in tender or swollen joint counts and 70% improvement in 3 of the following 5 criteria: 1) Physician's Global Assessment of Disease Activity, 2) Participant's Assessment of Disease Activity, 3) Participant's Assessment of Pain, 4) Participant's Assessment of Functional Disability via a HAQ, and 5) CRP at each visit.
Change From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonths 1, 6, and 12Synovitis is defined as an area in the synovial compartment that shows above normal postgadolinium enhancement of a thickness greater than the width of the normal synovium. T1-weighted images were acquired before and after the administration of intravenous contrast agent containing gadolinium. Intravenous contrast was required to demonstrate enhancing synovitis. Synovitis was scored 0 to 3 in 3 wrist regions and in each of the first through fifth MCP joints. A score of 0 is normal, with no enhancement or enhancement up to the thickness of normal synovium, while scores of 1 to 3 (mild, moderate, severe) refer to increments of one-third of the presumed maximum volume of enhancing tissue in the synovial compartment. Total synovitis score ranges from a minimum of 0 to a maximum of 24. A negative value in synovitis change from Baseline score indicates an improvement.
Change From Baseline in DAS28-3 (CRP)Months 1, 2, 3, 6, 9, and 12DAS28-3 (CRP) was calculated from the swollen joint count and tender joint count using the 28 joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity.
Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Baseline and Months 1, 2, 3, 6, 9, and 12DAS28-4 (ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (millimeters per hour \[mm/hour\]) and Participant Global Assessment of disease activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4; higher score=more disease activity. DAS28-4 (ESR) ≤3.2 implied low disease activity and \>3.2 to 5.1 implied moderate to high disease activity, and DAS28-4 (ESR) \<2.6 = remission.
Change From Baseline in DAS28-4 (ESR)Months 1, 2, 3, 6, 9, and 12DAS28-4 (ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (millimeters per hour \[mm/hour\]) and Participant Global Assessment of disease activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4; higher score=more disease activity.
Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Months 1, 2, 3, 6, 9, and 12DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28 categorical responses define a good (absolute: \<3.2 or \>1.2 improvement from baseline \[BL\]), moderate (absolute: 3.2-5.1 or 0.6-1.2 change from BL), or no response (absolute: \>5.1 or \<0.6 change from BL).
Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Months 1, 2, 3, 6, 9, and 12DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3(CRP) ≤3.2 implied low disease activity.
Percentage of Participants With DAS28-3 (CRP) Score <2.6Months 1, 2, 3, 6, 9, and 12DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3(CRP) \<2.6 implied remission.
Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Months 1, 2, 3, 6, 9, and 12DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28 categorical responses define a good (absolute: \<3.2 or \>1.2 improvement from BL), moderate (absolute: 3.2-5.1 or 0.6-1.2 change from BL), or no response (absolute: \>5.1 or \<0.6 change from BL).
Percentage of Participants With DAS28-4 (ESR) ≤3.2Months 1, 2, 3, 6, 9, and 12DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28-4(ESR) ≤3.2 implied low disease activity.
Percentage of Participants With DAS28-4 (ESR) <2.6Months 1, 2, 3, 6, 9, and 12DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28-4(ESR) \<2.6 implied remission.
Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Baseline and Months 1, 2, 3, 6, 9, and 12DAS28-3 (CRP) was calculated from the swollen joint count and tender joint count using the 28 joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3 (CRP) less than or equal to (≤)3.2 implied low disease activity and greater than (\>)3.2 to 5.1 implied moderate to high disease activity, and DAS28-3 (CRP) less than (\<)2.6 = remission.
Change From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonths 1, 3, and 12Bone edema was assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Bone edema was defined as a lesion within the trabecular bone, with ill-defined margins and signal characteristics consistent with increased water content. Each bone was scored separately; the scale was 0â€3 based on the proportion of bone with edema, as follows 0: no edema; 1: 1â€33% of bone edematous; 2: 34â€66% of bone edematous; 3: 67â€100%. OMERACT RAMRIS total bone edema score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist was 75 (range 0-75). Increasing score=greater severity.

Countries

Argentina, Chile, Croatia, Czechia, Hungary, Mexico, Poland, Puerto Rico, United States

Participant flow

Participants by arm

ArmCount
Tofacitinib (CP-690,550) Plus MTX
Participants received CP-690,550 10 mg, tablets, PO, BID, and MTX 10 mg/week to 20 mg/week, capsules, PO, for a maximum of 12 months. MTX dose was titrated as follows: 10 mg once weekly for 4 weeks; if well tolerated, then at Month 1 titrate up to 15 mg once weekly for 4 weeks; if well tolerated, then at Month 2 titrate up to 20 mg once weekly for the duration of the study. A single dose reduction of MTX 5 mg was allowed because of lack of tolerance, as long as the participant remained on a dose of at least MTX 10 mg weekly. Participants also received folate supplementation according to local MTX label guidelines and standard of care.
36
Tofacitinib (CP-690,550)
Participants received CP-690,550 10 mg tablets, PO, BID and matching placebo MTX capsules, PO, once weekly for a maximum of 12 months. To maintain the blind, matching placebo MTX was titrated as follows: 4 capsules once weekly for 4 weeks; if well tolerated, at Month 1 titrate up to 6 capsules once weekly for 4 weeks; if well tolerated, then at Month 2 titrate up to 8 capsules once weekly for the duration of the study. A single dose reduction of MTX placebo to 2 capsules was allowed because of lack of tolerance, as long as the participant remained on a dose of at least 4 MTX placebo capsules weekly. Participants also received folate supplementation according to local MTX label guidelines and standard of care.
36
Methotrexate
Participants received MTX 10 mg/week to 20 mg/week, capsules, PO, and matching placebo CP-690,550 tablets, PO, BID. MTX dose was titrated as follows: 10 mg once weekly for 4 weeks; if well tolerated, then at Month 1 titrate up to 15 mg once weekly for 4 weeks; if well tolerated, then at Month 2 titrate up to 20 mg once weekly for the duration of the study. A single dose reduction of MTX 5 mg was allowed because of lack of tolerance, as long as the participant remained on a dose of at least MTX 10 mg weekly. Participants also received folate supplementation according to local MTX label guidelines and standard of care.
37
Total109

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event425
Overall StudyLack of Efficacy006
Overall StudyLost to Follow-up110
Overall StudyProtocol Violation012
Overall StudyReason not specified100
Overall StudyWithdrawal by Subject253

Baseline characteristics

CharacteristicTofacitinib (CP-690,550) Plus MTXTofacitinib (CP-690,550)MethotrexateTotal
Age, Continuous47.8 years
STANDARD_DEVIATION 12.3
50.8 years
STANDARD_DEVIATION 12.8
47.8 years
STANDARD_DEVIATION 11.6
48.8 years
STANDARD_DEVIATION 12.2
Sex: Female, Male
Female
31 Participants30 Participants29 Participants90 Participants
Sex: Female, Male
Male
5 Participants6 Participants8 Participants19 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
24 / 3631 / 3629 / 37
serious
Total, serious adverse events
2 / 361 / 362 / 37

Outcome results

Primary

Change From Baseline to Month 3 in Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) Wrist and Metacarpophalangeal (MCP) Synovitis

Synovitis is defined as an area in the synovial compartment that shows above normal postgadolinium enhancement of a thickness greater than the width of the normal synovium. T1-weighted images were acquired before and after the administration of intravenous contrast agent containing gadolinium. Intravenous contrast was required to demonstrate enhancing synovitis. Synovitis was scored 0 to 3 in 3 wrist regions and in each of the first through fifth MCP joints. A score of 0 is normal, with no enhancement or enhancement up to the thickness of normal synovium, while scores of 1 to 3 (mild, moderate, severe) refer to increments of one-third of the presumed maximum volume of enhancing tissue in the synovial compartment. Total synovitis score ranges from a minimum of 0 to a maximum of 24. A negative value in synovitis change from Baseline score indicates an improvement.

Time frame: Month 3

Population: Evaluable Set: all randomized participants who received at least 1 dose of the randomized investigational drug and for whom a variable is nonmissing at both baseline and the specified timepoint.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Month 3 in Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) Wrist and Metacarpophalangeal (MCP) Synovitis-0.80 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Month 3 in Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) Wrist and Metacarpophalangeal (MCP) Synovitis-0.69 score on a scaleStandard Error 0.4
MethotrexateChange From Baseline to Month 3 in Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Score (RAMRIS) Wrist and Metacarpophalangeal (MCP) Synovitis-0.17 score on a scaleStandard Error 0.4
p-value: 0.269690% CI: [-1.58, 0.31]mixed model repeated measures analysis
p-value: 0.356190% CI: [-1.46, 0.41]mixed model repeated measures analysis
Primary

Change From Baseline to Month 6 in OMERACT RAMRIS Wrist and MCP Bone Marrow Edema

Bone edema was assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Bone edema was defined as a lesion within the trabecular bone, with ill-defined margins and signal characteristics consistent with increased water content. Each bone was scored separately; the scale was 0-3 based on the proportion of bone with edema, as follows 0: no edema; 1: 1-33% of bone edematous; 2: 34-66% of bone edematous; 3: 67-100%. OMERACT RAMRIS total bone edema score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist was 75 (range 0-75). Increasing score=greater severity.

Time frame: Month 6

Population: Evaluable Set

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Month 6 in OMERACT RAMRIS Wrist and MCP Bone Marrow Edema-1.26 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Month 6 in OMERACT RAMRIS Wrist and MCP Bone Marrow Edema-1.45 score on a scaleStandard Error 0.42
MethotrexateChange From Baseline to Month 6 in OMERACT RAMRIS Wrist and MCP Bone Marrow Edema0.29 score on a scaleStandard Error 0.42
p-value: 0.008990% CI: [-2.52, -0.58]mixed model repeated measures analysis
p-value: 0.003890% CI: [-2.72, -0.76]mixed model repeated measures analysis
Secondary

Change From Baseline in DAS28-3 (CRP)

DAS28-3 (CRP) was calculated from the swollen joint count and tender joint count using the 28 joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 1 (n=33,35,37)-1.61 scores on a scaleStandard Error 0.19
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 2 (n=33,33,32)-2.32 scores on a scaleStandard Error 0.19
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 3 (n=33,33,31)-2.25 scores on a scaleStandard Error 0.19
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 6 (n=31,29,29)-2.54 scores on a scaleStandard Error 0.19
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 9 (n=30,28,24)-2.92 scores on a scaleStandard Error 0.2
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-3 (CRP)Month 12 (n=27,26,20)-2.78 scores on a scaleStandard Error 0.2
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 12 (n=27,26,20)-2.61 scores on a scaleStandard Error 0.2
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 1 (n=33,35,37)-1.40 scores on a scaleStandard Error 0.18
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 6 (n=31,29,29)-2.55 scores on a scaleStandard Error 0.2
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 9 (n=30,28,24)-2.43 scores on a scaleStandard Error 0.2
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 2 (n=33,33,32)-1.88 scores on a scaleStandard Error 0.19
Tofacitinib (CP-690,550)Change From Baseline in DAS28-3 (CRP)Month 3 (n=33,33,31)-1.96 scores on a scaleStandard Error 0.19
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 2 (n=33,33,32)-1.24 scores on a scaleStandard Error 0.19
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 3 (n=33,33,31)-1.57 scores on a scaleStandard Error 0.19
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 12 (n=27,26,20)-1.77 scores on a scaleStandard Error 0.22
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 6 (n=31,29,29)-1.52 scores on a scaleStandard Error 0.19
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 1 (n=33,35,37)-0.73 scores on a scaleStandard Error 0.18
MethotrexateChange From Baseline in DAS28-3 (CRP)Month 9 (n=30,28,24)-1.76 scores on a scaleStandard Error 0.21
Comparison: Month 1p-value: 0.00190% CI: [-1.31, -0.45]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.010290% CI: [-1.1, -0.24]mixed model repeated measures analysis
Comparison: Month 2p-value: <0.000190% CI: [-1.52, -0.64]mixed model repeated measures analysis
Comparison: Month 2p-value: 0.017590% CI: [-1.08, -0.2]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.012590% CI: [-1.13, -0.23]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.145790% CI: [-0.84, 0.05]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.000390% CI: [-1.48, -0.57]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.000290% CI: [-1.49, -0.58]mixed model repeated measures analysis
Comparison: Month 9p-value: <0.000190% CI: [-1.63, -0.69]mixed model repeated measures analysis
Comparison: Month 9p-value: 0.019690% CI: [-1.14, -0.2]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000790% CI: [-1.5, -0.52]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.004990% CI: [-1.32, -0.35]mixed model repeated measures analysis
Secondary

Change From Baseline in DAS28-4 (ESR)

DAS28-4 (ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (millimeters per hour \[mm/hour\]) and Participant Global Assessment of disease activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4; higher score=more disease activity.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 1 (n=34,35,37)-1.77 scores on a scaleStandard Error 0.21
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 2 (n=32,33,31)-2.59 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 3 (n=33,33,31)-2.69 scores on a scaleStandard Error 0.21
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 6 (n=30,29,28)-3.02 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 9 (n=30,28,24)-3.29 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550) Plus MTXChange From Baseline in DAS28-4 (ESR)Month 12 (n=27,26,20)-3.31 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 12 (n=27,26,20)-2.84 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 1 (n=34,35,37)-1.57 scores on a scaleStandard Error 0.21
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 6 (n=30,29,28)-2.81 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 9 (n=30,28,24)-2.72 scores on a scaleStandard Error 0.22
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 2 (n=32,33,31)-2.08 scores on a scaleStandard Error 0.21
Tofacitinib (CP-690,550)Change From Baseline in DAS28-4 (ESR)Month 3 (n=33,33,31)-2.35 scores on a scaleStandard Error 0.21
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 2 (n=32,33,31)-1.41 scores on a scaleStandard Error 0.21
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 3 (n=33,33,31)-1.80 scores on a scaleStandard Error 0.21
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 12 (n=27,26,20)-2.18 scores on a scaleStandard Error 0.24
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 6 (n=30,29,28)-1.73 scores on a scaleStandard Error 0.22
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 1 (n=34,35,37)-0.94 scores on a scaleStandard Error 0.2
MethotrexateChange From Baseline in DAS28-4 (ESR)Month 9 (n=30,28,24)-2.14 scores on a scaleStandard Error 0.23
Comparison: Month 6p-value: <0.000190% CI: [-1.81, -0.78]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.004690% CI: [-1.32, -0.35]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.030390% CI: [-1.11, -0.15]mixed model repeated measures analysis
Comparison: Month 2p-value: 0.000190% CI: [-1.69, -0.68]mixed model repeated measures analysis
Comparison: Month 2p-value: 0.025590% CI: [-1.17, -0.18]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.003590% CI: [-1.39, -0.39]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.068390% CI: [-1.05, -0.05]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.000690% CI: [-1.59, -0.56]mixed model repeated measures analysis
Comparison: Month 9p-value: 0.000490% CI: [-1.67, -0.62]mixed model repeated measures analysis
Comparison: Month 9p-value: 0.070690% CI: [-1.1, -0.05]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000890% CI: [-1.67, -0.58]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.046690% CI: [-1.21, -0.12]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP Erosions

Bone erosion assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Each site was scored in 1.0 increments from 0 (no damage) to 10 (severe damage), indicating erosion (each unit=10% bone loss) of original articular bone. OMERACT RAMRIS total erosion score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist is 250 (range 0-250). Increasing score=greater severity.

Time frame: Months 1, 3, 6, and 12

Population: Evaluable Set

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 6 (n=33,29,28)-0.06 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 12 (n=29,26,21)-0.11 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 1 (n=28,31,35)-0.12 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 3 (n=30,32,31)-0.12 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 6 (n=33,29,28)-0.02 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 3 (n=30,32,31)0.36 score on a scaleStandard Error 0.24
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 12 (n=29,26,21)-0.08 score on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 1 (n=28,31,35)0.27 score on a scaleStandard Error 0.25
MethotrexateChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 12 (n=29,26,21)1.18 score on a scaleStandard Error 0.26
MethotrexateChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 1 (n=28,31,35)0.27 score on a scaleStandard Error 0.24
MethotrexateChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 3 (n=30,32,31)0.44 score on a scaleStandard Error 0.25
MethotrexateChange From Baseline to Months 1, 3, 6, and 12 in OMERACT RAMRIS Wrist and MCP ErosionsMonth 6 (n=33,29,28)0.65 score on a scaleStandard Error 0.25
Comparison: Month 1p-value: 0.268990% CI: [-0.96, 0.19]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.993590% CI: [-0.58, 0.57]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.108690% CI: [-1.15, 0.01]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.809290% CI: [-0.66, 0.49]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.046390% CI: [-1.29, -0.12]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.062490% CI: [-1.25, -0.08]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000590% CI: [-1.9, -0.69]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000890% CI: [-1.87, -0.65]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCP

Bone edema was assessed at 25 anatomic locations: 15 in 1 wrist and 10 in attached hand. Bone edema was defined as a lesion within the trabecular bone, with ill-defined margins and signal characteristics consistent with increased water content. Each bone was scored separately; the scale was 0â€3 based on the proportion of bone with edema, as follows 0: no edema; 1: 1â€33% of bone edematous; 2: 34â€66% of bone edematous; 3: 67â€100%. OMERACT RAMRIS total bone edema score for hands/wrists was sum of the individual scores for each location. Thus the maximum score per hand/wrist was 75 (range 0-75). Increasing score=greater severity.

Time frame: Months 1, 3, and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 3 (n=30,32,31)-0.77 score on a scaleStandard Error 0.42
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 1 (n=28,31,35)-0.29 score on a scaleStandard Error 0.43
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 12 (n=29,26,21)-1.52 score on a scaleStandard Error 0.42
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 3 (n=30,32,31)-0.86 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 1 (n=28,31,35)0.19 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 12 (n=29,26,21)-1.70 score on a scaleStandard Error 0.43
MethotrexateChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 1 (n=28,31,35)0.11 score on a scaleStandard Error 0.39
MethotrexateChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 12 (n=29,26,21)0.59 score on a scaleStandard Error 0.46
MethotrexateChange From Baseline to Months 1, 3, and 12 in OMERACT RAMRIS Bone Marrow Edema in Wrist and MCPMonth 3 (n=30,32,31)0.47 score on a scaleStandard Error 0.41
Comparison: Month 1p-value: 0.48990% CI: [-1.36, 0.56]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.881790% CI: [-0.85, 1.02]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.035190% CI: [-2.21, -0.27]mixed model repeated measures analysis
Comparison: Month 3p-value: 0.023190% CI: [-2.28, -0.37]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000890% CI: [-3.13, -1.08]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.000390% CI: [-3.32, -1.25]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP Synovitis

Synovitis is defined as an area in the synovial compartment that shows above normal postgadolinium enhancement of a thickness greater than the width of the normal synovium. T1-weighted images were acquired before and after the administration of intravenous contrast agent containing gadolinium. Intravenous contrast was required to demonstrate enhancing synovitis. Synovitis was scored 0 to 3 in 3 wrist regions and in each of the first through fifth MCP joints. A score of 0 is normal, with no enhancement or enhancement up to the thickness of normal synovium, while scores of 1 to 3 (mild, moderate, severe) refer to increments of one-third of the presumed maximum volume of enhancing tissue in the synovial compartment. Total synovitis score ranges from a minimum of 0 to a maximum of 24. A negative value in synovitis change from Baseline score indicates an improvement.

Time frame: Months 1, 6, and 12

Population: Evaluable Set

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 6 (n=33,29,28)-1.22 score on a scaleStandard Error 0.4
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 1 (n=28,31,35)-0.42 score on a scaleStandard Error 0.42
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 12 (n=29,26,21)-2.26 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 6 (n=33,29,28)-1.29 score on a scaleStandard Error 0.41
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 1 (n=28,31,35)-0.34 score on a scaleStandard Error 0.4
Tofacitinib (CP-690,550)Change From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 12 (n=29,26,21)-1.16 score on a scaleStandard Error 0.43
MethotrexateChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 1 (n=28,31,35)-0.17 score on a scaleStandard Error 0.38
MethotrexateChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 12 (n=29,26,21)-0.66 score on a scaleStandard Error 0.46
MethotrexateChange From Baseline to Months 1, 6, and 12 in OMERACT RAMRIS Wrist and MCP SynovitisMonth 6 (n=33,29,28)-0.28 score on a scaleStandard Error 0.42
Comparison: Month 6p-value: 0.103890% CI: [-1.89, 0.01]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.086890% CI: [-1.98, -0.04]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.010390% CI: [-2.62, -0.58]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.657690% CI: [-1.19, 0.69]mixed model repeated measures analysis
Comparison: Month 1p-value: 0.756590% CI: [-1.09, 0.74]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.43590% CI: [-1.53, 0.55]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 6 and 12 in Erosion Score

Erosion score (a component of the modified TSS) is a measure of change in joint health. Erosion score range is from 0 (no erosion) to 280 (high erosion). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in Erosion ScoreMonth 6 (n=29,27,28)0.16 scores on a scaleStandard Error 0.24
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in Erosion ScoreMonth 12 (n=26,25,22)0.42 scores on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in Erosion ScoreMonth 6 (n=29,27,28)-0.10 scores on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in Erosion ScoreMonth 12 (n=26,25,22)-0.05 scores on a scaleStandard Error 0.26
MethotrexateChange From Baseline to Months 6 and 12 in Erosion ScoreMonth 6 (n=29,27,28)0.58 scores on a scaleStandard Error 0.25
MethotrexateChange From Baseline to Months 6 and 12 in Erosion ScoreMonth 12 (n=26,25,22)0.65 scores on a scaleStandard Error 0.27
Comparison: Month 6p-value: 0.235190% CI: [-1, 0.16]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.063190% CI: [-1.27, -0.08]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.536990% CI: [-0.83, 0.38]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.06290% CI: [-1.31, -0.08]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 6 and 12 in JSN Scores

JSN score (a component of the modified TSS) is a measure of change in joint health. JSN score range is 0 (no narrowing) to 168 (high narrowing). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in JSN ScoresMonth 6 (n=29,27,28)0.29 scores on a scaleStandard Error 0.34
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in JSN ScoresMonth 12 (n=26,25,22)0.43 scores on a scaleStandard Error 0.35
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in JSN ScoresMonth 6 (n=29,27,28)-0.06 scores on a scaleStandard Error 0.35
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in JSN ScoresMonth 12 (n=26,25,22)-0.12 scores on a scaleStandard Error 0.36
MethotrexateChange From Baseline to Months 6 and 12 in JSN ScoresMonth 6 (n=29,27,28)0.35 scores on a scaleStandard Error 0.36
MethotrexateChange From Baseline to Months 6 and 12 in JSN ScoresMonth 12 (n=26,25,22)0.71 scores on a scaleStandard Error 0.37
Comparison: Month 6p-value: 0.895990% CI: [-0.89, 0.76]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.419390% CI: [-1.25, 0.43]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.576490% CI: [-1.13, 0.56]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.110190% CI: [-1.69, 0.02]mixed model repeated measures analysis
Secondary

Change From Baseline to Months 6 and 12 in mTSS

Modified TSS is a measure of change in joint health. TSS is defined as joint space narrowing score (range 0 \[no narrowing\] to 168 \[high narrowing\]) + erosion score (range is from 0 \[no erosion\] to 280 \[high erosion\]). The modified TSS range is from 0 (no damage) to 448 (bad joint status). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in mTSSMonth 6 (n=29,27,28)0.44 scores on a scaleStandard Error 0.5
Tofacitinib (CP-690,550) Plus MTXChange From Baseline to Months 6 and 12 in mTSSMonth 12 (n=26,25,22)0.85 scores on a scaleStandard Error 0.51
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in mTSSMonth 6 (n=29,27,28)-0.14 scores on a scaleStandard Error 0.51
Tofacitinib (CP-690,550)Change From Baseline to Months 6 and 12 in mTSSMonth 12 (n=26,25,22)-0.15 scores on a scaleStandard Error 0.52
MethotrexateChange From Baseline to Months 6 and 12 in mTSSMonth 6 (n=29,27,28)0.93 scores on a scaleStandard Error 0.52
MethotrexateChange From Baseline to Months 6 and 12 in mTSSMonth 12 (n=26,25,22)1.36 scores on a scaleStandard Error 0.54
Comparison: Month 6p-value: 0.501990% CI: [-1.68, 0.71]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.146290% CI: [-2.28, 0.14]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.4990% CI: [-1.74, 0.72]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.045990% CI: [-2.76, -0.27]mixed model repeated measures analysis
Secondary

Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])

DAS28-3 (CRP) was calculated from the swollen joint count and tender joint count using the 28 joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3 (CRP) less than or equal to (≤)3.2 implied low disease activity and greater than (\>)3.2 to 5.1 implied moderate to high disease activity, and DAS28-3 (CRP) less than (\<)2.6 = remission.

Time frame: Baseline and Months 1, 2, 3, 6, 9, and 12

Population: FAS; n=number of participants assess for the specified parameter at a given visit.

ArmMeasureGroupValue (MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 2 (n=33,33,32)2.99 score on a scaleStandard Deviation 1.17
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 12 (n=27,26,20)2.49 score on a scaleStandard Deviation 1.02
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 6 (n=31,29,29)2.74 score on a scaleStandard Deviation 1.15
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 3 (n=33,33,31)3.06 score on a scaleStandard Deviation 1.02
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 1 (n=33,35,37)3.71 score on a scaleStandard Deviation 1.15
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Baseline (n=36,36,37)5.14 score on a scaleStandard Deviation 0.96
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 9 (n=30,28,24)2.37 score on a scaleStandard Deviation 0.98
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 12 (n=27,26,20)2.68 score on a scaleStandard Deviation 1.05
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Baseline (n=36,36,37)5.48 score on a scaleStandard Deviation 0.78
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 1 (n=33,35,37)4.03 score on a scaleStandard Deviation 0.91
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 2 (n=33,33,32)3.52 score on a scaleStandard Deviation 1.15
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 3 (n=33,33,31)3.46 score on a scaleStandard Deviation 1.09
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 6 (n=31,29,29)2.75 score on a scaleStandard Deviation 0.95
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 9 (n=30,28,24)2.85 score on a scaleStandard Deviation 0.9
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Baseline (n=36,36,37)5.36 score on a scaleStandard Deviation 0.8
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 6 (n=31,29,29)3.92 score on a scaleStandard Deviation 1.49
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 1 (n=33,35,37)4.65 score on a scaleStandard Deviation 1.07
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 12 (n=27,26,20)3.58 score on a scaleStandard Deviation 1.4
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 9 (n=30,28,24)3.58 score on a scaleStandard Deviation 1.63
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 3 (n=33,33,31)3.87 score on a scaleStandard Deviation 1.43
MethotrexateDisease Activity Score Based on 28-Joint Count and CRP (DAS28-3 [CRP])Month 2 (n=33,33,32)4.21 score on a scaleStandard Deviation 1.31
Comparison: Baseline90% CI: [-0.56, 0.13]
Comparison: Baseline90% CI: [-0.19, 0.43]
Comparison: Month 190% CI: [-1.38, -0.5]
Comparison: Month 190% CI: [-1.01, -0.22]
Comparison: Month 290% CI: [-1.73, -0.7]
Comparison: Month 290% CI: [-1.2, -0.18]
Comparison: Month 390% CI: [-1.33, -0.29]
Comparison: Month 390% CI: [-0.94, 0.12]
Comparison: Month 690% CI: [-1.75, -0.61]
Comparison: Month 690% CI: [-1.73, -0.63]
Comparison: Month 990% CI: [-1.81, -0.61]
Comparison: Month 990% CI: [-1.33, -0.13]
Comparison: Month 1290% CI: [-1.69, -0.51]
Comparison: Month 1290% CI: [-1.51, -0.29]
Secondary

Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])

DAS28-4 (ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (millimeters per hour \[mm/hour\]) and Participant Global Assessment of disease activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4; higher score=more disease activity. DAS28-4 (ESR) ≤3.2 implied low disease activity and \>3.2 to 5.1 implied moderate to high disease activity, and DAS28-4 (ESR) \<2.6 = remission.

Time frame: Baseline and Months 1, 2, 3, 6, 9, and 12

Population: FAS; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 1 (n=34,35,37)4.60 scores on a scaleStandard Deviation 1.37
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 6 (n=30,29,28)3.32 scores on a scaleStandard Deviation 1.45
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 3 (n=33,33,31)3.66 scores on a scaleStandard Deviation 1.16
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Baseline (n=36,36,37)6.25 scores on a scaleStandard Deviation 0.94
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 12 (n=27,26,20)3.02 scores on a scaleStandard Deviation 1.22
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 9 (n=30,28,24)3.06 scores on a scaleStandard Deviation 1.27
Tofacitinib (CP-690,550) Plus MTXDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 2 (n=32,33,31)3.77 scores on a scaleStandard Deviation 1.34
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 3 (n=33,33,31)4.12 scores on a scaleStandard Deviation 1.31
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Baseline (n=36,36,37)6.50 scores on a scaleStandard Deviation 0.75
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 1 (n=34,35,37)4.93 scores on a scaleStandard Deviation 1.12
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 2 (n=32,33,31)4.36 scores on a scaleStandard Deviation 1.4
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 6 (n=30,29,28)3.51 scores on a scaleStandard Deviation 1.2
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 9 (n=30,28,24)3.58 scores on a scaleStandard Deviation 1.1
Tofacitinib (CP-690,550)Disease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 12 (n=27,26,20)3.47 scores on a scaleStandard Deviation 1.36
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 6 (n=30,29,28)4.75 scores on a scaleStandard Deviation 1.76
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 1 (n=34,35,37)5.51 scores on a scaleStandard Deviation 1.09
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 12 (n=27,26,20)4.13 scores on a scaleStandard Deviation 1.76
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 9 (n=30,28,24)4.17 scores on a scaleStandard Deviation 1.91
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 3 (n=33,33,31)4.63 scores on a scaleStandard Deviation 1.63
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Month 2 (n=32,33,31)5.05 scores on a scaleStandard Deviation 1.26
MethotrexateDisease Activity Score Based on 28-Joint Count and Erythrocyte Sedimentation Rate (DAS28-4 [ESR])Baseline (n=36,36,37)6.44 scores on a scaleStandard Deviation 0.78
Comparison: Baseline90% CI: [-0.53, 0.15]
Comparison: Baseline90% CI: [-0.24, 0.36]
Comparison: Month 190% CI: [-1.4, -0.42]
Comparison: Month 190% CI: [-1.01, -0.14]
Comparison: Month 290% CI: [-1.82, -0.73]
Comparison: Month 290% CI: [-1.25, -0.13]
Comparison: Month 390% CI: [-1.55, -0.38]
Comparison: Month 390% CI: [-1.12, 0.11]
Comparison: Month 690% CI: [-2.13, -0.72]
Comparison: Month 690% CI: [-1.91, -0.57]
Comparison: Month 990% CI: [-1.84, -0.39]
Comparison: Month 990% CI: [-1.3, 0.13]
Comparison: Month 1290% CI: [-1.84, -0.39]
Comparison: Month 1290% CI: [-1.43, 0.11]
Secondary

Erosion Scores at Months 6 and 12

Erosion score (a component of the modified TSS) is a measure of change in joint health. Erosion score range is from 0 (no erosion) to 280 (high erosion). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXErosion Scores at Months 6 and 12Month 6 (n=29,27,28)5.84 scores on a scaleStandard Error 0.24
Tofacitinib (CP-690,550) Plus MTXErosion Scores at Months 6 and 12Month 12 (n=26,25,22)6.10 scores on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Erosion Scores at Months 6 and 12Month 6 (n=29,27,28)5.59 scores on a scaleStandard Error 0.25
Tofacitinib (CP-690,550)Erosion Scores at Months 6 and 12Month 12 (n=26,25,22)5.64 scores on a scaleStandard Error 0.26
MethotrexateErosion Scores at Months 6 and 12Month 6 (n=29,27,28)6.26 scores on a scaleStandard Error 0.25
MethotrexateErosion Scores at Months 6 and 12Month 12 (n=26,25,22)6.33 scores on a scaleStandard Error 0.27
Comparison: Month 6p-value: 0.235190% CI: [-1, 0.16]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.063190% CI: [-1.27, -0.08]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.536990% CI: [-0.83, 0.38]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.06290% CI: [-1.31, -0.08]mixed model repeated measures analysis
Secondary

Joint Space Narrowing (JSN) Scores at Months 6 and 12

JSN score (a component of the modified TSS) is a measure of change in joint health. JSN score range is 0 (no narrowing) to 168 (high narrowing). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXJoint Space Narrowing (JSN) Scores at Months 6 and 12Month 6 (n=29,27,28)5.45 score on a scaleStandard Error 0.34
Tofacitinib (CP-690,550) Plus MTXJoint Space Narrowing (JSN) Scores at Months 6 and 12Month 12 (n=26,25,22)5.59 score on a scaleStandard Error 0.35
Tofacitinib (CP-690,550)Joint Space Narrowing (JSN) Scores at Months 6 and 12Month 6 (n=29,27,28)5.11 score on a scaleStandard Error 0.35
Tofacitinib (CP-690,550)Joint Space Narrowing (JSN) Scores at Months 6 and 12Month 12 (n=26,25,22)5.05 score on a scaleStandard Error 0.36
MethotrexateJoint Space Narrowing (JSN) Scores at Months 6 and 12Month 6 (n=29,27,28)5.52 score on a scaleStandard Error 0.36
MethotrexateJoint Space Narrowing (JSN) Scores at Months 6 and 12Month 12 (n=26,25,22)5.88 score on a scaleStandard Error 0.37
Comparison: Month 6p-value: 0.895990% CI: [-0.89, 0.76]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.419390% CI: [-1.25, 0.43]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.576490% CI: [-1.13, 0.56]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.110190% CI: [-1.69, 0.02]mixed model repeated measures analysis
Secondary

Modified Total Sharp Score (mTSS) at Months 6 and 12

Modified TSS is a measure of change in joint health. TSS is defined as joint space narrowing score (range 0 \[no narrowing\] to 168 \[high narrowing\]) plus (+) erosion score (range is from 0 \[no erosion\] to 280 \[high erosion\]). The modified TSS range is from 0 (no damage) to 448 (bad joint status). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Time frame: Months 6 and 12

Population: Evaluable Set; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tofacitinib (CP-690,550) Plus MTXModified Total Sharp Score (mTSS) at Months 6 and 12Month 6 (n=29,27,28)11.28 score on a scaleStandard Error 0.5
Tofacitinib (CP-690,550) Plus MTXModified Total Sharp Score (mTSS) at Months 6 and 12Month 12 (n=26,25,22)11.70 score on a scaleStandard Error 0.51
Tofacitinib (CP-690,550)Modified Total Sharp Score (mTSS) at Months 6 and 12Month 6 (n=29,27,28)10.70 score on a scaleStandard Error 0.51
Tofacitinib (CP-690,550)Modified Total Sharp Score (mTSS) at Months 6 and 12Month 12 (n=26,25,22)10.69 score on a scaleStandard Error 0.52
MethotrexateModified Total Sharp Score (mTSS) at Months 6 and 12Month 6 (n=29,27,28)11.77 score on a scaleStandard Error 0.52
MethotrexateModified Total Sharp Score (mTSS) at Months 6 and 12Month 12 (n=26,25,22)12.21 score on a scaleStandard Error 0.54
Comparison: Month 6p-value: 0.501990% CI: [-1.68, 0.71]mixed model repeated measures analysis
Comparison: Month 6p-value: 0.146290% CI: [-2.28, 0.14]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.4990% CI: [-1.74, 0.72]mixed model repeated measures analysis
Comparison: Month 12p-value: 0.045990% CI: [-2.76, -0.27]mixed model repeated measures analysis
Secondary

Percentage of Participants With an ACR 50% Improvement (ACR50) Response

ACR50 response: ≥ 50% improvement in tender or swollen joint counts and 50% improvement in 3 of the following 5 criteria: 1) Physician's Global Assessment of Disease Activity, 2) Participant's Assessment of disease activity, 3) Paricipant's Assessment of Pain, 4) Participant's assessment of functional disability via a HAQ, and 5) CRP at each visit.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assess for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 1 (n=35,35,37)22.86 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 2 (n=35,36,37)45.71 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 3 (n=35,36,37)48.57 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 6 (n=35,36,37)57.14 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 9 (n=35,36,37)57.14 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 12 (n=35,36,37)57.14 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 12 (n=35,36,37)44.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 1 (n=35,35,37)22.86 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 6 (n=35,36,37)47.22 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 9 (n=35,36,37)44.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 2 (n=35,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 3 (n=35,36,37)50.00 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 2 (n=35,36,37)16.22 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 3 (n=35,36,37)24.32 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 12 (n=35,36,37)29.73 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 6 (n=35,36,37)21.62 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 1 (n=35,35,37)2.70 percentage of participants
MethotrexatePercentage of Participants With an ACR 50% Improvement (ACR50) ResponseMonth 9 (n=35,36,37)29.73 percentage of participants
Comparison: Month 1p-value: 0.007890% CI: [7.68, 32.62]Normal approximation to the binomial
Comparison: Month 1p-value: 0.007890% CI: [7.68, 32.62]Normal approximation to the binomial
Comparison: Month 2p-value: 0.004490% CI: [12.43, 46.56]Normal approximation to the binomial
Comparison: Month 2p-value: 0.084590% CI: [0.79, 33.43]Normal approximation to the binomial
Comparison: Month 3p-value: 0.027590% CI: [6.14, 42.35]Normal approximation to the binomial
Comparison: Month 3p-value: 0.018690% CI: [7.71, 43.63]Normal approximation to the binomial
Comparison: Month 6p-value: 0.000990% CI: [17.82, 53.22]Normal approximation to the binomial
Comparison: Month 6p-value: 0.016990% CI: [7.95, 43.24]Normal approximation to the binomial
Comparison: Month 9p-value: 0.014790% CI: [8.91, 45.9]Normal approximation to the binomial
Comparison: Month 9p-value: 0.188290% CI: [-3.68, 33.11]Normal approximation to the binomial
Comparison: Month 12p-value: 0.014790% CI: [8.91, 45.9]Normal approximation to the binomial
Comparison: Month 12p-value: 0.188290% CI: [-3.68, 33.11]Normal approximation to the binomial
Secondary

Percentage of Participants With an ACR 70% Improvement (ACR70) Response

ACR70 response: ≥70% improvement in tender or swollen joint counts and 70% improvement in 3 of the following 5 criteria: 1) Physician's Global Assessment of Disease Activity, 2) Participant's Assessment of Disease Activity, 3) Participant's Assessment of Pain, 4) Participant's Assessment of Functional Disability via a HAQ, and 5) CRP at each visit.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 1 (n=35,35,37)8.57 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 2 (n=35,36,37)31.43 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 3 (n=35,36,37)25.71 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 6 (n=35,36,37)34.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 9 (n=35,36,37)31.43 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 12 (n=35,36,37)22.86 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 12 (n=35,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 1 (n=35,35,37)2.86 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 6 (n=35,36,37)30.56 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 9 (n=35,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 2 (n=35,36,37)22.22 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 3 (n=35,36,37)27.78 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 2 (n=35,36,37)5.41 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 3 (n=35,36,37)10.81 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 12 (n=35,36,37)21.62 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 6 (n=35,36,37)21.62 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 1 (n=35,35,37)0.00 percentage of participants
MethotrexatePercentage of Participants With an ACR 70% Improvement (ACR70) ResponseMonth 9 (n=35,36,37)18.92 percentage of participants
Comparison: Month 1p-value: 0.0790% CI: [0.78, 16.35]Normal approximation to the binomial
Comparison: Month 1p-value: 0.310290% CI: [-1.77, 7.48]Normal approximation to the binomial
Comparison: Month 2p-value: 0.002790% CI: [11.73, 40.3]Normal approximation to the binomial
Comparison: Month 2p-value: 0.032490% CI: [3.88, 29.75]Normal approximation to the binomial
Comparison: Month 3p-value: 0.096990% CI: [0.13, 29.67]Normal approximation to the binomial
Comparison: Month 3p-value: 0.060690% CI: [2.09, 31.84]Normal approximation to the binomial
Comparison: Month 6p-value: 0.227690% CI: [-4.6, 29.93]Normal approximation to the binomial
Comparison: Month 6p-value: 0.382790% CI: [-7.9, 25.76]Normal approximation to the binomial
Comparison: Month 9p-value: 0.217790% CI: [-4.18, 29.2]Normal approximation to the binomial
Comparison: Month 9p-value: 0.155890% CI: [-2.29, 31.12]Normal approximation to the binomial
Comparison: Month 12p-value: 0.899790% CI: [-14.89, 17.36]Normal approximation to the binomial
Comparison: Month 12p-value: 0.258790% CI: [-5.34, 28.76]Normal approximation to the binomial
Secondary

Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) Response

ACR20 response: greater than or equal to (≥)20% improvement in tender joint count; ≥20% improvement in swollen joint count; and ≥20% improvement in at least 3 of 5 remaining ACR core measures: Participant's Assessment of Pain; Participant's Global Assessment of Disease Activity; Physician Global Assessment of Disease Activity; self-assessed disability (disability index of the Health Assessment Questionnaire \[HAQ\]); and C-Reactive Protein (CRP).

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS Non-Responder Imputation (NRI) method: participants with missing values were considered to be non-responders. n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 1 (n=35,35,37)42.86 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 2 (n=35,36,37)68.57 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 3 (n=35,36,37)77.14 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 6 (n=35,36,37)74.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 9 (n=35,36,37)71.43 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 12 (n=35,36,37)71.43 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 12 (n=35,36,37)61.11 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 1 (n=35,35,37)57.14 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 6 (n=35,36,37)66.67 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 9 (n=35,36,37)58.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 2 (n=35,36,37)61.11 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 3 (n=35,36,37)61.11 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 2 (n=35,36,37)40.54 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 3 (n=35,36,37)48.65 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 12 (n=35,36,37)43.24 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 6 (n=35,36,37)45.95 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 1 (n=35,35,37)29.73 percentage of participants
MethotrexatePercentage of Participants With an American College of Rheumatology (ACR) 20 Percent (%) Improvement (ACR20) ResponseMonth 9 (n=35,36,37)43.24 percentage of participants
Comparison: Month 1p-value: 0.24390% CI: [-5.36, 31.62]Normal approximation to the binomial
Comparison: Month 1p-value: 0.014790% CI: [8.91, 45.9]Normal approximation to the binomial
Comparison: Month 2p-value: 0.012790% CI: [9.51, 46.54]Normal approximation to the binomial
Comparison: Month 2p-value: 0.072490% CI: [1.73, 39.41]Normal approximation to the binomial
Comparison: Month 3p-value: 0.008690% CI: [10.63, 46.35]Normal approximation to the binomial
Comparison: Month 3p-value: 0.280890% CI: [-6.54, 31.47]Normal approximation to the binomial
Comparison: Month 9p-value: 0.011590% CI: [9.81, 46.55]Normal approximation to the binomial
Comparison: Month 9p-value: 0.192190% CI: [-3.94, 34.12]Normal approximation to the binomial
Comparison: Month 12p-value: 0.011590% CI: [9.81, 46.55]Normal approximation to the binomial
Comparison: Month 12p-value: 0.120390% CI: [-1.05, 36.79]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)

DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28 categorical responses define a good (absolute: \<3.2 or \>1.2 improvement from baseline \[BL\]), moderate (absolute: 3.2-5.1 or 0.6-1.2 change from BL), or no response (absolute: \>5.1 or \<0.6 change from BL).

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 1 (n=33,35,37)75.76 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 2 (n=34,36,37)91.18 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 3 (n=34,36,37)91.18 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 6 (n=34,36,37)88.24 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 9 (n=34,36,37)79.41 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 12 (n=34,36,37)82.35 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 12 (n=34,36,37)72.22 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 1 (n=33,35,37)71.43 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 6 (n=34,36,37)77.78 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 9 (n=34,36,37)69.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 2 (n=34,36,37)80.56 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 3 (n=34,36,37)77.78 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 2 (n=34,36,37)56.76 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 3 (n=34,36,37)56.76 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 12 (n=34,36,37)45.95 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 6 (n=34,36,37)54.05 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 1 (n=33,35,37)43.24 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Response (Good or Moderate Improvement)Month 9 (n=34,36,37)45.95 percentage of participants
Comparison: Month 1p-value: 0.003290% CI: [14.34, 50.68]Normal approximation to the binomial
Comparison: Month 1p-value: 0.011590% CI: [9.81, 46.55]Normal approximation to the binomial
Comparison: Month 2p-value: 0.000290% CI: [18.81, 50.02]Normal approximation to the binomial
Comparison: Month 2p-value: 0.023190% CI: [6.55, 41.03]Normal approximation to the binomial
Comparison: Month 3p-value: 0.000290% CI: [18.81, 50.02]Normal approximation to the binomial
Comparison: Month 3p-value: 0.049390% CI: [3.43, 38.61]Normal approximation to the binomial
Comparison: Month 6p-value: 0.000590% CI: [17.92, 50.43]Normal approximation to the binomial
Comparison: Month 6p-value: 0.02790% CI: [6.07, 41.37]Normal approximation to the binomial
Comparison: Month 9p-value: 0.001890% CI: [15.8, 51.12]Normal approximation to the binomial
Comparison: Month 9p-value: 0.036390% CI: [5.02, 41.96]Normal approximation to the binomial
Comparison: Month 12p-value: 0.000590% CI: [19.16, 53.64]Normal approximation to the binomial
Comparison: Month 12p-value: 0.017790% CI: [8.04, 44.5]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-3 (CRP) Score <2.6

DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3(CRP) \<2.6 implied remission.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 1 (n=33,35,37)18.18 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 2 (n=34,36,37)35.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 3 (n=34,36,37)32.35 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 6 (n=34,36,37)47.06 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 9 (n=34,36,37)50.00 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score <2.6Month 12 (n=34,36,37)47.06 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 12 (n=34,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 1 (n=33,35,37)5.71 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 6 (n=34,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 9 (n=34,36,37)38.89 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 2 (n=34,36,37)16.67 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score <2.6Month 3 (n=34,36,37)22.22 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 2 (n=34,36,37)8.11 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 3 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 12 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 6 (n=34,36,37)16.22 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 1 (n=33,35,37)5.41 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score <2.6Month 9 (n=34,36,37)18.92 percentage of participants
Comparison: Month 1p-value: 0.095990% CI: [0.15, 25.4]Normal approximation to the binomial
Comparison: Month 1p-value: 0.954490% CI: [-8.58, 9.19]Normal approximation to the binomial
Comparison: Month 2p-value: 0.003690% CI: [11.81, 42.55]Normal approximation to the binomial
Comparison: Month 2p-value: 0.26490% CI: [-4.04, 21.16]Normal approximation to the binomial
Comparison: Month 3p-value: 0.054490% CI: [2.72, 34.95]Normal approximation to the binomial
Comparison: Month 3p-value: 0.32990% CI: [-5.96, 23.38]Normal approximation to the binomial
Comparison: Month 6p-value: 0.003290% CI: [13.59, 48.09]Normal approximation to the binomial
Comparison: Month 6p-value: 0.084590% CI: [0.79, 33.43]Normal approximation to the binomial
Comparison: Month 9p-value: 0.003790% CI: [13.44, 48.72]Normal approximation to the binomial
Comparison: Month 9p-value: 0.05490% CI: [2.91, 37.02]Normal approximation to the binomial
Comparison: Month 12p-value: 0.00190% CI: [16.7, 50.39]Normal approximation to the binomial
Comparison: Month 12p-value: 0.040190% CI: [3.92, 35.71]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-3 (CRP) Score ≤3.2

DAS28-3(CRP) was calculated from the swollen joint count and tender joint count using 28-joints count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3(CRP) ≤3.2 implied low disease activity.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 1 (n=33,35,37)33.33 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 2 (n=34,36,37)50.00 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 3 (n=34,36,37)50.00 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 6 (n=34,36,37)61.76 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 9 (n=34,36,37)64.71 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 12 (n=34,36,37)61.76 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 12 (n=34,36,37)50.00 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 1 (n=33,35,37)17.14 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 6 (n=34,36,37)55.56 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 9 (n=34,36,37)58.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 2 (n=34,36,37)36.11 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 3 (n=34,36,37)41.67 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 2 (n=34,36,37)21.62 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 3 (n=34,36,37)21.62 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 12 (n=34,36,37)27.03 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 6 (n=34,36,37)27.03 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 1 (n=33,35,37)10.81 percentage of participants
MethotrexatePercentage of Participants With DAS28-3 (CRP) Score ≤3.2Month 9 (n=34,36,37)29.33 percentage of participants
Comparison: Month 1p-value: 0.019790% CI: [6.62, 38.42]Normal approximation to the binomial
Comparison: Month 1p-value: 0.437990% CI: [-7.09, 19.76]Normal approximation to the binomial
Comparison: Month 2p-value: 0.009390% CI: [10.4, 46.34]Normal approximation to the binomial
Comparison: Month 2p-value: 0.166990% CI: [-2.75, 31.73]Normal approximation to the binomial
Comparison: Month 3p-value: 0.009390% CI: [10.4, 46.34]Normal approximation to the binomial
Comparison: Month 3p-value: 0.059690% CI: [2.53, 37.55]Normal approximation to the binomial
Comparison: Month 6p-value: 0.001790% CI: [16.51, 52.96]Normal approximation to the binomial
Comparison: Month 6p-value: 0.009790% CI: [10.36, 46.69]Normal approximation to the binomial
Comparison: Month 9p-value: 0.001690% CI: [16.68, 53.26]Normal approximation to the binomial
Comparison: Month 9p-value: 0.010290% CI: [10.28, 46.91]Normal approximation to the binomial
Comparison: Month 12p-value: 0.001790% CI: [16.51, 52.96]Normal approximation to the binomial
Comparison: Month 12p-value: 0.038190% CI: [4.74, 41.19]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-4 (ESR) <2.6

DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28-4(ESR) \<2.6 implied remission.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 1 (n=34,35,37)5.88 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 2 (n=34,36,37)17.65 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 3 (n=34,36,37)23.53 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 6 (n=34,36,37)29.41 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 9 (n=34,36,37)35.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) <2.6Month 12 (n=34,36,37)32.35 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 12 (n=34,36,37)19.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 1 (n=34,35,37)2.86 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 6 (n=34,36,37)13.89 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 9 (n=34,36,37)13.89 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 2 (n=34,36,37)5.56 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) <2.6Month 3 (n=34,36,37)2.78 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 2 (n=34,36,37)2.70 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 3 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 12 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 6 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 1 (n=34,35,37)0.00 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) <2.6Month 9 (n=34,36,37)16.22 percentage of participants
Comparison: Month 1p-value: 0.144990% CI: [-0.75, 12.52]Normal approximation to the binomial
Comparison: Month 1p-value: 0.310290% CI: [-1.77, 7.48]Normal approximation to the binomial
Comparison: Month 2p-value: 0.034290% CI: [3.32, 26.55]Normal approximation to the binomial
Comparison: Month 2p-value: 0.5490% CI: [-4.8, 10.51]Normal approximation to the binomial
Comparison: Month 3p-value: 0.275990% CI: [-5.1, 25.13]Normal approximation to the binomial
Comparison: Month 3p-value: 0.085990% CI: [-21.02, -0.45]Normal approximation to the binomial
Comparison: Month 6p-value: 0.098590% CI: [0.06, 31.73]Normal approximation to the binomial
Comparison: Month 6p-value: 0.962890% CI: [-12.86, 13.61]Normal approximation to the binomial
Comparison: Month 9p-value: 0.061290% CI: [2.31, 35.84]Normal approximation to the binomial
Comparison: Month 9p-value: 0.780790% CI: [-16.08, 11.43]Normal approximation to the binomial
Comparison: Month 12p-value: 0.054490% CI: [2.72, 34.95]Normal approximation to the binomial
Comparison: Month 12p-value: 0.493790% CI: [-8.32, 20.18]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-4 (ESR) ≤3.2

DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28-4(ESR) ≤3.2 implied low disease activity.

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 1 (n=34,35,37)20.59 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 2 (n=34,36,37)35.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 3 (n=34,36,37)32.35 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 6 (n=34,36,37)41.18 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 9 (n=34,36,37)44.12 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) ≤3.2Month 12 (n=34,36,37)50.00 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 12 (n=34,36,37)30.56 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 1 (n=34,35,37)8.57 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 6 (n=34,36,37)27.78 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 9 (n=34,36,37)33.33 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 2 (n=34,36,37)13.89 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) ≤3.2Month 3 (n=34,36,37)30.56 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 2 (n=34,36,37)8.11 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 3 (n=34,36,37)13.51 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 12 (n=34,36,37)16.22 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 6 (n=34,36,37)18.92 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 1 (n=34,35,37)2.70 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) ≤3.2Month 9 (n=34,36,37)18.92 percentage of participants
Comparison: Month 1p-value: 0.01690% CI: [5.66, 30.1]Normal approximation to the binomial
Comparison: Month 1p-value: 0.279890% CI: [-3.06, 14.8]Normal approximation to the binomial
Comparison: Month 2p-value: 0.003690% CI: [11.81, 42.55]Normal approximation to the binomial
Comparison: Month 2p-value: 0.428790% CI: [-6.23, 17.79]Normal approximation to the binomial
Comparison: Month 3p-value: 0.054490% CI: [2.72, 34.95]Normal approximation to the binomial
Comparison: Month 3p-value: 0.073290% CI: [1.39, 32.69]Normal approximation to the binomial
Comparison: Month 6p-value: 0.03690% CI: [4.79, 39.72]Normal approximation to the binomial
Comparison: Month 6p-value: 0.368890% CI: [-7.35, 25.07]Normal approximation to the binomial
Comparison: Month 9p-value: 0.018290% CI: [7.63, 42.76]Normal approximation to the binomial
Comparison: Month 9p-value: 0.155890% CI: [-2.29, 31.12]Normal approximation to the binomial
Comparison: Month 12p-value: 0.001290% CI: [16.51, 51.05]Normal approximation to the binomial
Comparison: Month 12p-value: 0.142690% CI: [-1.74, 30.42]Normal approximation to the binomial
Secondary

Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)

DAS28-4(ESR) was calculated from swollen joint count and tender joint count using 28 joints count, ESR (mm/hour) and Participant's Global Assessment of Disease Activity (participant rated arthritis activity assessment). Total score range: 0 to 9.4, higher score=more disease activity. DAS28 categorical responses define a good (absolute: \<3.2 or \>1.2 improvement from BL), moderate (absolute: 3.2-5.1 or 0.6-1.2 change from BL), or no response (absolute: \>5.1 or \<0.6 change from BL).

Time frame: Months 1, 2, 3, 6, 9, and 12

Population: FAS NRI; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (NUMBER)
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 1 (n=34,35,37)67.65 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 2 (n=32,33,31)85.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 3 (n=33,33,31)91.18 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 6 (n=30,29,28)85.29 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 9 (n=30,28,24)82.35 percentage of participants
Tofacitinib (CP-690,550) Plus MTXPercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 12 (n=27,26,20)79.41 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 12 (n=27,26,20)69.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 1 (n=34,35,37)62.86 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 6 (n=30,29,28)77.78 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 9 (n=30,28,24)72.22 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 2 (n=32,33,31)69.44 percentage of participants
Tofacitinib (CP-690,550)Percentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 3 (n=33,33,31)69.44 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 2 (n=32,33,31)59.46 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 3 (n=33,33,31)51.35 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 12 (n=27,26,20)45.95 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 6 (n=30,29,28)51.35 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 1 (n=34,35,37)29.73 percentage of participants
MethotrexatePercentage of Participants With DAS28-4 (ESR) Response (Good or Moderate Improvement)Month 9 (n=30,28,24)45.95 percentage of participants
Comparison: Month 1p-value: 0.000590% CI: [19.83, 55.99]Normal approximation to the binomial
Comparison: Month 1p-value: 0.002890% CI: [14.87, 51.38]Normal approximation to the binomial
Comparison: Month 2p-value: 0.010590% CI: [9.21, 42.45]Normal approximation to the binomial
Comparison: Month 2p-value: 0.3790% CI: [-8.33, 28.3]Normal approximation to the binomial
Comparison: Month 3p-value: <0.000190% CI: [24.11, 55.53]Normal approximation to the binomial
Comparison: Month 3p-value: 0.107690% CI: [-0.4, 36.59]Normal approximation to the binomial
Comparison: Month 6p-value: 0.000890% CI: [17.13, 50.75]Normal approximation to the binomial
Comparison: Month 6p-value: 0.013990% CI: [8.74, 44.1]Normal approximation to the binomial
Comparison: Month 9p-value: 0.000590% CI: [19.16, 53.64]Normal approximation to the binomial
Comparison: Month 9p-value: 0.017790% CI: [8.04, 44.5]Normal approximation to the binomial
Comparison: Month 12p-value: 0.001890% CI: [15.8, 51.12]Normal approximation to the binomial
Comparison: Month 12p-value: 0.036390% CI: [5.02, 41.96]Normal approximation to the binomial

Source: ClinicalTrials.gov · Data processed: Mar 14, 2026