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INCB028050 Compared to Background Therapy in Patients With Active Rheumatoid Arthritis (RA) With Inadequate Response to Disease Modifying Anti-Rheumatic Drugs

A Randomized, Double-blind, Placebo Controlled, Dose Ranging, Parallel Group, Phase 2 Study of INCB028050 Compared to Background Therapy in Patients With Active RA With Inadequate Response to Any Disease Modifying Anti-Rheumatic Drugs (DMARD) Therapy Including Biologics

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00902486
Enrollment
127
Registered
2009-05-15
Start date
2009-05-31
Completion date
2010-07-31
Last updated
2018-09-04

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

Conditions

Rheumatoid Arthritis

Keywords

Rheumatoid arthritis

Brief summary

This was a randomized, double blind, placebo controlled, dose ranging, parallel group study. Participants who had active rheumatoid arthritis (RA) who had inadequate response to any disease modifying anti-rheumatic drug (DMARD) therapy including biologics were enrolled. Screening evaluations were performed within approximately 28 days of randomization. The duration of the study was 6 months with the primary endpoint assessed at 3 months. Eligible participants were randomly assigned to one of three doses (4, 7 or 10 mg QD) of INCB028050 (Baricitinib) or placebo.

Interventions

DRUGINCB028050

4 mg capsules QD

DRUGPlacebo

Placebo matching INCB028050 QD

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

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

Inclusion criteria

* Must have rheumatoid arthritis which has been inadequately controlled with at least one DMARD * For subjects receiving antimalarials, they must be treated with antimalarials for at least 6 months and receiving a stable daily dose * For subjects receiving sulfasalazine, they must be treated with Sulfasalazine (SSZ) for at least 6 months and receiving a stable daily dose of no more than 3 grams per day * For subjects on methotrexate, they must be treated with methotrexate for at least 6 months, and receiving a stable weekly dose of methotrexate between 7.5 and 25 mg * For subjects on leflunomide, they must be treated with leflunomide for at least 6 months, and receiving a stable dose of leflunomide between 10 to 20 mg * For subjects receiving corticosteroids, they must be on a dose not to exceed 10 mg of prednisone daily * Active rheumatoid arthritis at the time of screening defined by the following: 6 or more joints tender or painful on motion and 4 or more swollen joints and at least one of the following two: Erythrocyte sedimentation rate (ESR) greater than or equal to 28 mm/hr or C-reactive protein (CRP) greater than or equal to 7 mg/liter * Have evidence of lack of risk for tuberculosis

Exclusion criteria

* Current or recent viral, bacterial, fungal, parasitic or mycobacterial infection requiring systemic therapy * History of infected joint prosthesis * Subjects who have a current or recent history of severe, progressive, uncontrolled renal, hepatic, hematological, gastrointestinal, pulmonary, cardiac, neurological or cerebral disease * Subjects who have received treatment with the following drugs or drug classes within the specified timeframe: prior treatment with rituximab within 12 months, prior treatment with an oral Janus kinase (JAK) inhibitor, DMARDs or other anti-rheumatic therapies not specified and allowed according to protocol, treatment with any investigational medication within 12 weeks or 5 half-lives (whichever is longer), and treatment with a biologic agent within 12 weeks prior to the first dose of study medication * Subjects with a past history of neutropenia, thrombocytopenia or anemia requiring transfusion other than at the time of trauma or surgery, and subjects that meet protocol specified laboratory measures

Design outcomes

Primary

MeasureTime frameDescription
The Percentage of Participants Achieving American College of Rheumatology (ACR) 20 ImprovementWeek 12The ACR 20 is defined as ≥ 20% improvement in tender joint count plus ≥ 20% improvement in swollen joint count plus ≥ 20% improvement in 3 of the following 5 criteria: participants' assessment of pain, participants' global assessment of disease activity (PGA), Physician's global assessment of disease activity (PHGA), participants' self-assessed disability Health Assessment Questionnaire (HAQ), and Erythrocyte sedimentation rate (ESR) or C-reactive protein (CRP), whichever shows the greatest change.
Participants With at Least 1 Adverse Event From Baseline Through Week 12From Baseline through week 12

Secondary

MeasureTime frameDescription
The Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 12 and Week 24The ACR 50 is defined as ≥ 50% improvement in tender joint count plus ≥ 50% improvement in swollen joint count plus ≥50% improvement in 3 of the following 5 criteria: participants' assessment of pain, PGA, PHGA, participants' self-assessed disability HAQ, and ESR or CRP, whichever shows the greatest change.
The Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 12 and Week 24The ACR 70 is defined as ≥ 70% improvement in tender joint count plus ≥ 70% improvement in swollen joint count plus ≥ 70% improvement in 3 of the following 5 criteria: participants' assessment of pain, PGA, PHGA, participants' self-assessed disability HAQ, and ESR or CRP, whichever shows the greatest change.
The Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 12 and Week 24The ACR 90 is defined greater than or equal to (\>=) 90 percent (%) improvement in painful and tender joint count; \>= 90% improvement in swollen joint count; and \>= 90% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant 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) at each visit.
Change in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Calculation of the disease activity score 28 (DAS 28) score was based on the tender joint count, plus swollen joint count, plus PGA, plus C-reactive protein (CRP). A higher score indicated more disease activity. The mean change from baseline (which represent decreases in the DAS 28 CRP scores) are shown as positive numbers in these analyses. The DAS28 provides a score on a scale from 0 to 10 indicating the current activity of the rheumatoid arthritis (\>5.1=high disease activity; \<3.2=low disease activity; \<2.6=remission).
Change in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Calculation of the disease activity score 28 (DAS 28) score was based on the tender joint count, plus swollen joint count, plus PGA, plus Erythrocyte sedimentation rate (ESR). The DAS28-ESR is expressed as units on a scale with the minimum score=0 (best) to maximum score=10 (worst). Remission was defined as DAS28-ESR \<2.6. The mean change from baseline (which represent decreases in the DAS 28 ESR scores) are shown as positive numbers in these analyses.
Percentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 12 and Week 24Participants who achieved low disease activity based on the DAS 28 ESR (score ≤3.2). Participants who achieved low disease activity were classified as responders in this analysis.
Percentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 12 and Week 24Participants who achieved inactive disease based on the DAS 28 ESR (score ≤2.6). Participants who achieved low disease activity were classified as responders in this analysis.
Percentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 12 and Week 24Participants who achieved inactive disease based on DAS 28 CRP (score ≤2.6). Participants who achieved low disease activity were classified as responders in this analysis.
Change in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Baseline, Week 12 and Week 24The 28 joints to be assessed for tenderness and swelling were shoulder, elbow, wrist, metacarpophalangeal (MCP) joints 1-5, proximal interphalangeal (PIP) joints 1-5, and knee on both sides of the body. The sum of tender joints ranged from 0 to 28 with 0 as best possible health status and 28 as worst health status.
Change in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Baseline, Week 12 and Week 24The 28 joints to be assessed for tenderness and swelling were shoulder, elbow, wrist, metacarpophalangeal (MCP) joints 1-5, proximal interphalangeal (PIP) joints 1-5, and knee on both sides of the body. The sum of tender joints ranged from 0 to 28 with 0 as best possible health status and 28 as worst health status.
Change in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Participants were to assess their current level of pain on a 100 mm horizontal Visual Analog Scale (VAS). The left-hand extreme of the line (0 mm) was described as no pain and the right-hand (100 mm) as most imaginable pain.
Change in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Participants were to assess the disease (RA) activity on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no arthritis activity (symptom-free and no arthritis symptoms) and the right hand extreme (100 mm) as extremely active arthritis (maximum arthritis disease activity). A decreasing mean score, therefore, indicates improvement.
Change in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Physicians were to assess the disease (RA) activity on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no arthritis activity (symptom-free and no arthritis symptoms) and the right hand extreme (100 mm) as extremely active arthritis (maximum arthritis disease activity). A decreasing mean score, therefore, indicates improvement.
Participants With at Least 1 Adverse Event From Week 12 to Week 24Week 12 to Week 24
Change in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24ESR is a laboratory test that provides a non-specific measure of inflammation. The test assesses the rate at which red blood cells fall in a test tube. Normal range is 0-30 millimeter/hour (mm/hr). A higher rate is consistent with inflammation.
Change in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24The test for CRP is a laboratory measurement for evaluation of an acute phase reactant of inflammation through the use of an ultrasensitive assay. A decrease in the level of CRP indicates reduction in inflammation and therefore improvement.
Change in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24Duration of morning stiffness was defined as the time elapsed when participant woke up in the morning and was able to resume normal activities without stiffness in minutes (If none was present = 0; If morning stiffness was continuing at the time of assessment or was unusual compared to the recent past, average of duration of stiffness over the past 3 days was reported; If stiffness persisted the entire day, 1440 minutes was recorded).
Percentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 12Week 12EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2.
Percentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 24Week 24EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2.
Percentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 12Week 12EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 2.6.
Percentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 24Week 24EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 2.6.
Change in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 5-8 primarily contribute to the mental component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).
Change in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 1-4 primarily contribute to the physical component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).
Percent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 12 and Week 24HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0 = least difficulty and 3 = extreme difficulty. The MCID score for HAQ-DI is -0.22.
Percent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 12 and Week 24Participants were to assess their current level of pain on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no pain and the right-hand (100 mm) as most imaginable pain. MCID for the pain score is a decrease of at least 10 mm on a 100 mm scale.
Percent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 and Week 24The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 5-8 primarily contribute to the mental component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).
Change in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Baseline, Week 12 and Week 24HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0 = least difficulty and 3 = extreme difficulty.
The Percentage of Participants Who Were Assigned to Active Treatment at Baseline Achieving ACR 20 Improvement at Week 24From Baseline to Week 24The ACR 20 is defined as ≥ 20% improvement in tender joint count plus ≥ 20% improvement in swollen joint count plus ≥ 20% improvement in 3 of the following 5 criteria: participants' assessment of pain, participants' global assessment of disease activity (PGA), Physician's global assessment of disease activity (PHGA), participants' self-assessed disability Health Assessment Questionnaire (HAQ), and Erythrocyte sedimentation rate (ESR) or C-reactive protein (CRP), whichever shows the greatest change.

Countries

Czechia, United States

Participant flow

Recruitment details

The study population included participants diagnosed with RA who had failed to respond adequately to any DMARD therapy, including biologics.

Pre-assignment details

The study was divided into 3 distinct phases: Screening Phase (up to 28 days before randomization), Treatment Phase (12 weeks + 12-week extension period), and the Follow-up (4 ± 1 weeks following final dose of study medication).

Participants by arm

ArmCount
INCB028050 4 mg QD
INCB028050 was administered qd, orally in 4 mg capsules. All participants were treated with only 1 capsule daily, without regard to meal time.
32
INCB028050 7 mg QD
INCB028050 was administered qd, orally in 7 mg capsules. All participants were treated with only 1 capsule daily, without regard to meal time.
32
INCB028050 10 mg QD
INCB028050 was administered qd, orally in 10 mg capsules. All participants were treated with only 1 capsule daily, without regard to meal time.
32
Placebo
INCB028050 was administered qd, orally in matching placebo capsules. All participants were treated with only 1 capsule daily, without regard to meal time.
31
Total127

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Extension Period (Weeks 12 Through 24)Adverse Event000012
Extension Period (Weeks 12 Through 24)Consent Withdrawn001100
Extension Period (Weeks 12 Through 24)Disease Progression000100
Extension Period (Weeks 12 Through 24)Lost to Follow-up001000
Extension Period (Weeks 12 Through 24)Protocol Deviation000001
Follow-up (After Week 24)Lost to Follow-up000100
Treatment Period (Weeks 0 Through 12)Adverse Event100112
Treatment Period (Weeks 0 Through 12)Consent Withdrawn100002
Treatment Period (Weeks 0 Through 12)corrected QT (QTc) exclusion criteria000100
Treatment Period (Weeks 0 Through 12)Lost to Follow-up000100
Treatment Period (Weeks 0 Through 12)Protocol Deviation000011

Baseline characteristics

CharacteristicINCB028050 4 mg QDINCB028050 7 mg QDINCB028050 10 mg QDPlaceboTotal
Age, Continuous56.8 years
STANDARD_DEVIATION 12.28
53.7 years
STANDARD_DEVIATION 10.92
57.3 years
STANDARD_DEVIATION 10.38
55.2 years
STANDARD_DEVIATION 10.09
55.8 years
STANDARD_DEVIATION 10.92
Sex: Female, Male
Female
29 Participants26 Participants25 Participants22 Participants102 Participants
Sex: Female, Male
Male
3 Participants6 Participants7 Participants9 Participants25 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
23 / 3119 / 3115 / 3220 / 3111 / 149 / 1511 / 2917 / 306 / 270 / 141 / 153 / 295 / 302 / 27
serious
Total, serious adverse events
0 / 310 / 311 / 320 / 310 / 140 / 150 / 291 / 300 / 270 / 141 / 150 / 290 / 300 / 27

Outcome results

Primary

Participants With at Least 1 Adverse Event From Baseline Through Week 12

Time frame: From Baseline through week 12

Population: Safety Evaluable Participants included all participants who were enrolled and took at least 1 dose of study medication.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboParticipants With at Least 1 Adverse Event From Baseline Through Week 1219 Participants
INCB028050 4 mg QDParticipants With at Least 1 Adverse Event From Baseline Through Week 1215 Participants
INCB028050 7 mg QDParticipants With at Least 1 Adverse Event From Baseline Through Week 1220 Participants
INCB028050 10 mg QDParticipants With at Least 1 Adverse Event From Baseline Through Week 1223 Participants
Primary

The Percentage of Participants Achieving American College of Rheumatology (ACR) 20 Improvement

The ACR 20 is defined as ≥ 20% improvement in tender joint count plus ≥ 20% improvement in swollen joint count plus ≥ 20% improvement in 3 of the following 5 criteria: participants' assessment of pain, participants' global assessment of disease activity (PGA), Physician's global assessment of disease activity (PHGA), participants' self-assessed disability Health Assessment Questionnaire (HAQ), and Erythrocyte sedimentation rate (ESR) or C-reactive protein (CRP), whichever shows the greatest change.

Time frame: Week 12

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 20 Improvement10 Participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 20 Improvement16 Participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 20 Improvement19 Participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 20 Improvement16 Participants
Comparison: The prespecified primary analysis for ACR 20 was the Cochran-Armitage trend test looking for a dose-response relationship. The treatment effect was also assessed using a logistic regression model including background therapy (more than 8 weeks of biologics or not) and treatment.p-value: 0.061995% CI: [0.77, 6.15]Cochran-Armitage trend test
Comparison: Sensitivity analysis for pairwise comparisons of 4 mg QD versus placebo.p-value: 0.1978Fisher Exact
Comparison: Sensitivity analysis for pairwise comparisons of 7 mg QD versus placebo.p-value: 0.0437Fisher Exact
Comparison: Sensitivity analysis for pairwise comparisons of 10 mg QD versus placebo.p-value: 0.1236Fisher Exact
Secondary

Change in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24

The 28 joints to be assessed for tenderness and swelling were shoulder, elbow, wrist, metacarpophalangeal (MCP) joints 1-5, proximal interphalangeal (PIP) joints 1-5, and knee on both sides of the body. The sum of tender joints ranged from 0 to 28 with 0 as best possible health status and 28 as worst health status.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Baseline11.0 Swollen jointsStandard Deviation 5.28
PlaceboChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24NA Swollen joints
PlaceboChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-3.7 Swollen jointsStandard Deviation 4.02
INCB028050 4 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Baseline12.0 Swollen jointsStandard Deviation 5.48
INCB028050 4 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-7.3 Swollen jointsStandard Deviation 5.14
INCB028050 4 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-6.1 Swollen jointsStandard Deviation 4.43
INCB028050 7 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-5.4 Swollen jointsStandard Deviation 5.85
INCB028050 7 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Baseline10.6 Swollen jointsStandard Deviation 4.57
INCB028050 7 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-6.2 Swollen jointsStandard Deviation 5.04
INCB028050 10 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Baseline12.9 Swollen jointsStandard Deviation 5.12
INCB028050 10 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-9.1 Swollen jointsStandard Deviation 5.1
INCB028050 10 mg QDChange in ACR Assessment Swollen Joint Count (SJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-7.2 Swollen jointsStandard Deviation 5.57
Secondary

Change in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24

The 28 joints to be assessed for tenderness and swelling were shoulder, elbow, wrist, metacarpophalangeal (MCP) joints 1-5, proximal interphalangeal (PIP) joints 1-5, and knee on both sides of the body. The sum of tender joints ranged from 0 to 28 with 0 as best possible health status and 28 as worst health status.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Baseline15.9 Tender jointsStandard Deviation 6.67
PlaceboChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24NA Tender joints
PlaceboChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-5.3 Tender jointsStandard Deviation 6.4
INCB028050 4 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Baseline14.4 Tender jointsStandard Deviation 6.58
INCB028050 4 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-8.3 Tender jointsStandard Deviation 6.17
INCB028050 4 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-7.4 Tender jointsStandard Deviation 6.21
INCB028050 7 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-6.4 Tender jointsStandard Deviation 7.98
INCB028050 7 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Baseline14.7 Tender jointsStandard Deviation 6.7
INCB028050 7 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-8.7 Tender jointsStandard Deviation 7.42
INCB028050 10 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Baseline15.9 Tender jointsStandard Deviation 6.37
INCB028050 10 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 24-12.0 Tender jointsStandard Deviation 8.19
INCB028050 10 mg QDChange in ACR Assessment Tender Joint Count (TJC) From Baseline to Week 12 and Week 24Change from baseline at Week 12-8.8 Tender jointsStandard Deviation 8.86
Secondary

Change in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24

The test for CRP is a laboratory measurement for evaluation of an acute phase reactant of inflammation through the use of an ultrasensitive assay. A decrease in the level of CRP indicates reduction in inflammation and therefore improvement.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Baseline10.89 mg/LStandard Deviation 11.556
PlaceboChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 24NA mg/L
PlaceboChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 120.18 mg/LStandard Deviation 10.063
INCB028050 4 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Baseline15.63 mg/LStandard Deviation 17.327
INCB028050 4 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 12-9.76 mg/LStandard Deviation 16.053
INCB028050 4 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 24-6.74 mg/LStandard Deviation 18.086
INCB028050 7 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 12-4.01 mg/LStandard Deviation 26.799
INCB028050 7 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Baseline15.64 mg/LStandard Deviation 16.113
INCB028050 7 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 24-7.90 mg/LStandard Deviation 16.713
INCB028050 10 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 24-5.52 mg/LStandard Deviation 9.017
INCB028050 10 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Baseline7.52 mg/LStandard Deviation 8.581
INCB028050 10 mg QDChange in C-reactive Protein (CRP) From Baseline at Week 12 and Week 24Change from baseline at Week 12-0.73 mg/LStandard Deviation 13.488
Secondary

Change in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24

Calculation of the disease activity score 28 (DAS 28) score was based on the tender joint count, plus swollen joint count, plus PGA, plus C-reactive protein (CRP). A higher score indicated more disease activity. The mean change from baseline (which represent decreases in the DAS 28 CRP scores) are shown as positive numbers in these analyses. The DAS28 provides a score on a scale from 0 to 10 indicating the current activity of the rheumatoid arthritis (\>5.1=high disease activity; \<3.2=low disease activity; \<2.6=remission).

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Baseline5.71 Units on a scaleStandard Deviation 0.875
PlaceboChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 24NA Units on a scale
PlaceboChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.01 Units on a scaleStandard Deviation 1.245
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Baseline5.64 Units on a scaleStandard Deviation 1.098
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.13 Units on a scaleStandard Deviation 1.355
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.87 Units on a scaleStandard Deviation 1.231
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.83 Units on a scaleStandard Deviation 1.534
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Baseline5.76 Units on a scaleStandard Deviation 0.925
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.23 Units on a scaleStandard Deviation 1.548
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Baseline5.64 Units on a scaleStandard Deviation 0.774
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.75 Units on a scaleStandard Deviation 1.234
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) CRP Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.84 Units on a scaleStandard Deviation 1.143
Secondary

Change in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24

Calculation of the disease activity score 28 (DAS 28) score was based on the tender joint count, plus swollen joint count, plus PGA, plus Erythrocyte sedimentation rate (ESR). The DAS28-ESR is expressed as units on a scale with the minimum score=0 (best) to maximum score=10 (worst). Remission was defined as DAS28-ESR \<2.6. The mean change from baseline (which represent decreases in the DAS 28 ESR scores) are shown as positive numbers in these analyses.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Baseline6.56 Units on a scaleStandard Deviation 0.84
PlaceboChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 24NA Units on a scale
PlaceboChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.25 Units on a scaleStandard Deviation 1.489
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Baseline6.41 Units on a scaleStandard Deviation 1.024
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.17 Units on a scaleStandard Deviation 1.524
INCB028050 4 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.87 Units on a scaleStandard Deviation 1.342
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.97 Units on a scaleStandard Deviation 1.613
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Baseline6.35 Units on a scaleStandard Deviation 0.968
INCB028050 7 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.29 Units on a scaleStandard Deviation 1.455
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Baseline6.37 Units on a scaleStandard Deviation 0.851
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 24-2.79 Units on a scaleStandard Deviation 1.394
INCB028050 10 mg QDChange in Disease Activity Score 28 (DAS28) ESR Score From Baseline at Week 12 and Week 24Change from baseline at Week 12-1.90 Units on a scaleStandard Deviation 1.481
Secondary

Change in Duration of Morning Stiffness From Baseline at Week 12 and Week 24

Duration of morning stiffness was defined as the time elapsed when participant woke up in the morning and was able to resume normal activities without stiffness in minutes (If none was present = 0; If morning stiffness was continuing at the time of assessment or was unusual compared to the recent past, average of duration of stiffness over the past 3 days was reported; If stiffness persisted the entire day, 1440 minutes was recorded).

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Baseline78.5 MinutesStandard Deviation 61.36
PlaceboChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 24NA Minutes
PlaceboChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 122.6 MinutesStandard Deviation 69.23
INCB028050 4 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Baseline179.8 MinutesStandard Deviation 347.48
INCB028050 4 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 24-120.6 MinutesStandard Deviation 245.35
INCB028050 4 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 12-51.1 MinutesStandard Deviation 94.8
INCB028050 7 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 12-92.6 MinutesStandard Deviation 250.51
INCB028050 7 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Baseline125.5 MinutesStandard Deviation 246.75
INCB028050 7 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 24-99.3 MinutesStandard Deviation 254.05
INCB028050 10 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Baseline79.2 MinutesStandard Deviation 56.83
INCB028050 10 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 24-51.5 MinutesStandard Deviation 70.84
INCB028050 10 mg QDChange in Duration of Morning Stiffness From Baseline at Week 12 and Week 24Change from baseline at Week 12-42.2 MinutesStandard Deviation 63.97
Secondary

Change in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24

ESR is a laboratory test that provides a non-specific measure of inflammation. The test assesses the rate at which red blood cells fall in a test tube. Normal range is 0-30 millimeter/hour (mm/hr). A higher rate is consistent with inflammation.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Baseline40.8 mm/hrStandard Deviation 15.4
PlaceboChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 24NA mm/hr
PlaceboChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 12-6.1 mm/hrStandard Deviation 15.76
INCB028050 4 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Baseline42.8 mm/hrStandard Deviation 17.62
INCB028050 4 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 24-11.5 mm/hrStandard Deviation 21.96
INCB028050 4 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 12-7.5 mm/hrStandard Deviation 23.17
INCB028050 7 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 12-10.7 mm/hrStandard Deviation 21.52
INCB028050 7 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Baseline37.3 mm/hrStandard Deviation 21.56
INCB028050 7 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 24-12.8 mm/hrStandard Deviation 20.74
INCB028050 10 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 24-11.1 mm/hrStandard Deviation 26
INCB028050 10 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Change from baseline at Week 12-5.9 mm/hrStandard Deviation 32.35
INCB028050 10 mg QDChange in Erythrocyte Sedimentation Rate (ESR) From Baseline at Week 12 and Week 24Baseline34.8 mm/hrStandard Deviation 29.05
Secondary

Change in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24

HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0 = least difficulty and 3 = extreme difficulty.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Baseline1.61 Score on a scaleStandard Deviation 0.494
PlaceboChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 12 (n=31, 31, 30, 30)-0.20 Score on a scaleStandard Deviation 0.367
PlaceboChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 24NA Score on a scale
INCB028050 4 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Baseline1.50 Score on a scaleStandard Deviation 0.601
INCB028050 4 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 24-0.56 Score on a scaleStandard Deviation 0.673
INCB028050 4 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 12 (n=31, 31, 30, 30)-0.38 Score on a scaleStandard Deviation 0.568
INCB028050 7 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 12 (n=31, 31, 30, 30)-0.48 Score on a scaleStandard Deviation 0.613
INCB028050 7 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Baseline1.67 Score on a scaleStandard Deviation 0.474
INCB028050 7 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 24-0.63 Score on a scaleStandard Deviation 0.563
INCB028050 10 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Baseline1.50 Score on a scaleStandard Deviation 0.59
INCB028050 10 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 24-0.39 Score on a scaleStandard Deviation 0.469
INCB028050 10 mg QDChange in Health Assessment Questionnaire-Disability Index (HAQ-DI) From Baseline at Week 12 and Week 24Change from baseline at Week 12 (n=31, 31, 30, 30)-0.33 Score on a scaleStandard Deviation 0.539
Secondary

Change in Participants' Assessment of Pain From Baseline at Week 12 and Week 24

Participants were to assess their current level of pain on a 100 mm horizontal Visual Analog Scale (VAS). The left-hand extreme of the line (0 mm) was described as no pain and the right-hand (100 mm) as most imaginable pain.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Baseline62.37 millimeter (mm)Standard Deviation 21.079
PlaceboChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 24NA millimeter (mm)
PlaceboChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 12-6.24 millimeter (mm)Standard Deviation 22.065
INCB028050 4 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Baseline57.08 millimeter (mm)Standard Deviation 24.716
INCB028050 4 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 24-22.13 millimeter (mm)Standard Deviation 27.294
INCB028050 4 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 12-21.98 millimeter (mm)Standard Deviation 26.275
INCB028050 7 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 12-22.19 millimeter (mm)Standard Deviation 25.631
INCB028050 7 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Baseline63.25 millimeter (mm)Standard Deviation 18.656
INCB028050 7 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 24-27.62 millimeter (mm)Standard Deviation 25.015
INCB028050 10 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Baseline57.00 millimeter (mm)Standard Deviation 22.995
INCB028050 10 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 24-30.39 millimeter (mm)Standard Deviation 30.847
INCB028050 10 mg QDChange in Participants' Assessment of Pain From Baseline at Week 12 and Week 24Change from baseline at Week 12-22.97 millimeter (mm)Standard Deviation 37.691
Secondary

Change in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24

Participants were to assess the disease (RA) activity on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no arthritis activity (symptom-free and no arthritis symptoms) and the right hand extreme (100 mm) as extremely active arthritis (maximum arthritis disease activity). A decreasing mean score, therefore, indicates improvement.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Baseline66.19 millimeter (mm)Standard Deviation 20.522
PlaceboChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 24NA millimeter (mm)
PlaceboChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 12-8.61 millimeter (mm)Standard Deviation 22.569
INCB028050 4 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Baseline59.02 millimeter (mm)Standard Deviation 26.314
INCB028050 4 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 12-22.06 millimeter (mm)Standard Deviation 27.366
INCB028050 4 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 24-24.02 millimeter (mm)Standard Deviation 26.921
INCB028050 7 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 24-31.53 millimeter (mm)Standard Deviation 23.891
INCB028050 7 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Baseline69.69 millimeter (mm)Standard Deviation 18.893
INCB028050 7 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 12-27.41 millimeter (mm)Standard Deviation 21.99
INCB028050 10 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 24-34.08 millimeter (mm)Standard Deviation 27.518
INCB028050 10 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Change from baseline at Week 12-25.48 millimeter (mm)Standard Deviation 32.879
INCB028050 10 mg QDChange in Participants' Global Assessment of Disease Activity From Baseline at Week 12 and Week 24Baseline62.25 millimeter (mm)Standard Deviation 21.346
Secondary

Change in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24

Physicians were to assess the disease (RA) activity on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no arthritis activity (symptom-free and no arthritis symptoms) and the right hand extreme (100 mm) as extremely active arthritis (maximum arthritis disease activity). A decreasing mean score, therefore, indicates improvement.

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 24NA millimeter (mm)
PlaceboChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Baseline63.45 millimeter (mm)Standard Deviation 16.903
PlaceboChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 12-20.23 millimeter (mm)Standard Deviation 19.824
INCB028050 4 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 24-38.78 millimeter (mm)Standard Deviation 22.527
INCB028050 4 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 12-33.87 millimeter (mm)Standard Deviation 24.283
INCB028050 4 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Baseline61.94 millimeter (mm)Standard Deviation 19.162
INCB028050 7 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Baseline59.80 millimeter (mm)Standard Deviation 17.185
INCB028050 7 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 12-29.95 millimeter (mm)Standard Deviation 25.741
INCB028050 7 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 24-36.94 millimeter (mm)Standard Deviation 21.235
INCB028050 10 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Baseline59.32 millimeter (mm)Standard Deviation 16.89
INCB028050 10 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 24-38.94 millimeter (mm)Standard Deviation 21.776
INCB028050 10 mg QDChange in Physician's Global Assessment of Disease Activity (PGA) From Baseline at Week 12 and Week 24Change from baseline at Week 12-30.88 millimeter (mm)Standard Deviation 19.334
Secondary

Change in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24

The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 5-8 primarily contribute to the mental component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Baseline71.08 scores on a scaleStandard Deviation 27.534
PlaceboChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 24NA scores on a scale
PlaceboChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 122.92 scores on a scaleStandard Deviation 19.613
INCB028050 4 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 247.72 scores on a scaleStandard Deviation 17.543
INCB028050 4 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 127.87 scores on a scaleStandard Deviation 19.547
INCB028050 4 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Baseline69.03 scores on a scaleStandard Deviation 28.181
INCB028050 7 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 244.60 scores on a scaleStandard Deviation 17.146
INCB028050 7 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 122.21 scores on a scaleStandard Deviation 17.814
INCB028050 7 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Baseline78.41 scores on a scaleStandard Deviation 30.329
INCB028050 10 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Baseline78.62 scores on a scaleStandard Deviation 24.16
INCB028050 10 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 126.36 scores on a scaleStandard Deviation 25.203
INCB028050 10 mg QDChange in SF-36 Mental Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 242.29 scores on a scaleStandard Deviation 28.869
Secondary

Change in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24

The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 1-4 primarily contribute to the physical component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).

Time frame: Baseline, Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Baseline29.14 scores on a scaleStandard Deviation 14.33
PlaceboChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 24NA scores on a scale
PlaceboChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 123.72 scores on a scaleStandard Deviation 11.027
INCB028050 4 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Baseline34.67 scores on a scaleStandard Deviation 16.006
INCB028050 4 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 129.57 scores on a scaleStandard Deviation 14.96
INCB028050 4 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 2411.60 scores on a scaleStandard Deviation 14.503
INCB028050 7 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 1212.97 scores on a scaleStandard Deviation 17.932
INCB028050 7 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 2415.56 scores on a scaleStandard Deviation 16.144
INCB028050 7 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Baseline26.71 scores on a scaleStandard Deviation 14.642
INCB028050 10 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Baseline28.82 scores on a scaleStandard Deviation 14.212
INCB028050 10 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 2411.77 scores on a scaleStandard Deviation 13.387
INCB028050 10 mg QDChange in SF-36 Physical Component Summary From Baseline at Week 12 and Week 24Change from baseline at Week 128.35 scores on a scaleStandard Deviation 13.947
Secondary

Participants With at Least 1 Adverse Event From Week 12 to Week 24

Time frame: Week 12 to Week 24

Population: Safety Evaluable Participants included all participants who were enrolled and took at least 1 dose of study medication.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboParticipants With at Least 1 Adverse Event From Week 12 to Week 246 Participants
INCB028050 4 mg QDParticipants With at Least 1 Adverse Event From Week 12 to Week 245 Participants
INCB028050 7 mg QDParticipants With at Least 1 Adverse Event From Week 12 to Week 2412 Participants
INCB028050 10 mg QDParticipants With at Least 1 Adverse Event From Week 12 to Week 2416 Participants
INCB028050 10 mg QDParticipants With at Least 1 Adverse Event From Week 12 to Week 2416 Participants
Secondary

Percentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 12

EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 2.6.

Time frame: Week 12

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (NUMBER)
PlaceboPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 1226.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 1239.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 1234.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 1233.0 percentage of participants
Secondary

Percentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 24

EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 2.6.

Time frame: Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (NUMBER)
PlaceboPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 2448.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 2453.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28CRP) at Week 2465.0 percentage of participants
Secondary

Percentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 24

EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2.

Time frame: Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (NUMBER)
PlaceboPercentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 2421.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 2415.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 2433.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 2443.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Good EULAR Response (DAS28ESR) at Week 2439.0 percentage of participants
Secondary

Percentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 12

EULAR response reflects an improvement in disease activity and an attainment of a lower degree of disease activity based on the DAS-28 score. A Good Response is defined as an improvement (decrease) in the DAS28 of more than 1.2 compared with Baseline and attainment of a DAS28 score less than or equal to 3.2.

Time frame: Week 12

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (NUMBER)
PlaceboPercentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 1219.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 1223.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 1231.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Good European League Against Rheumatism (EULAR) Response (DAS28 ESR) at Week 1213.0 percentage of participants
Secondary

Percentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2

Participants who achieved low disease activity based on the DAS 28 ESR (score ≤3.2). Participants who achieved low disease activity were classified as responders in this analysis.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 1219.0 percentage of participants
PlaceboPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 24NA percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 2448.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 1223.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 1231.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 2453.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 1213.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Low Disease Activity by DAS28 (ESR)≤3.2Week 2465.0 percentage of participants
Secondary

Percentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6

Participants who achieved inactive disease based on DAS 28 CRP (score ≤2.6). Participants who achieved low disease activity were classified as responders in this analysis.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 1223.0 percentage of participants
PlaceboPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 2430.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 1225.0 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 2440.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 1217.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Remission by DAS28 (CRP) ≤2.6Week 2448.0 percentage of participants
Secondary

Percentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6

Participants who achieved inactive disease based on the DAS 28 ESR (score ≤2.6). Participants who achieved low disease activity were classified as responders in this analysis.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 126.7 percentage of participants
PlaceboPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 2421.4 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 1218.8 percentage of participants
INCB028050 4 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 2423.1 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 1216.0 percentage of participants
INCB028050 7 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 2422.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 2427.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 1219.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 127.0 percentage of participants
INCB028050 10 mg QDPercentage of Participants Achieving Remission by DAS28 (ESR) ≤2.6Week 2426.0 percentage of participants
Secondary

Percent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24

Participants were to assess their current level of pain on a 100 mm horizontal VAS. The left-hand extreme of the line (0 mm) was described as no pain and the right-hand (100 mm) as most imaginable pain. MCID for the pain score is a decrease of at least 10 mm on a 100 mm scale.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 1235.0 percentage of participants
PlaceboPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 24NA percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 2459.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 1258.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 1269.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 2470.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 1267.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the Pain Score (Participant's Assessment of Pain) at Week 12 and Week 24Week 2472.0 percentage of participants
Secondary

Percent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24

The Health Assessment Questionnaire Short Form 36 (SF-36) determines participants' overall quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; 5) vitality; 6) limitations in social functioning because of physical or emotional problems; 7) limitations in usual role due to emotional problems; and 8) general mental health. Scales 5-8 primarily contribute to the mental component summary score (PCS) of the SF-36. Scores on each scale are summed and averaged (range = 0 worst-100 best).

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Physical Components52.0 percentage of participants
PlaceboPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Mental ComponentsNA percentage of participants
PlaceboPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Physical ComponentsNA percentage of participants
PlaceboPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Mental Components52.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Mental Components58.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Mental Components63.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Physical Components67.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Physical Components68.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Physical Components69.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Physical Components77.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Mental Components41.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Mental Components57.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Physical Components76.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 24 Mental Components52.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Physical Components57.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a MCID in the SF-36 Physical Components and Mental Components at Week 12 and Week 24Week 12 Mental Components50.0 percentage of participants
Secondary

Percent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24

HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0 = least difficulty and 3 = extreme difficulty. The MCID score for HAQ-DI is -0.22.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 12 (n=31, 31, 30, 30)45.0 percentage of participants
PlaceboPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 24NA percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 2467.0 percentage of participants
INCB028050 4 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 12 (n=31, 31, 30, 30)61.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 12 (n=31, 31, 30, 30)63.0 percentage of participants
INCB028050 7 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 2475.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 2460.0 percentage of participants
INCB028050 10 mg QDPercent of Participants Achieving a Minimum Clinically Important Difference (MCID) in the Health Assessment Questionnaire Disability Index (HAQ-DI) at Week 12 and Week 24Week 12 (n=31, 31, 30, 30)43.0 percentage of participants
Secondary

The Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24

The ACR 50 is defined as ≥ 50% improvement in tender joint count plus ≥ 50% improvement in swollen joint count plus ≥50% improvement in 3 of the following 5 criteria: participants' assessment of pain, PGA, PHGA, participants' self-assessed disability HAQ, and ESR or CRP, whichever shows the greatest change.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 1213.0 percentage of participants
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 24NA percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 2433.0 percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 1235.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 1231.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 2437.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 1230.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 50 Improvement at Week 12 and Week 24Week 2444.0 percentage of participants
Secondary

The Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24

The ACR 70 is defined as ≥ 70% improvement in tender joint count plus ≥ 70% improvement in swollen joint count plus ≥ 70% improvement in 3 of the following 5 criteria: participants' assessment of pain, PGA, PHGA, participants' self-assessed disability HAQ, and ESR or CRP, whichever shows the greatest change.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 123.0 percentage of participants
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 24NA percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 2426.0 percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 1216.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 129.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 2430.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 1210.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 70 Improvement at Week 12 and Week 24Week 2428.0 percentage of participants
Secondary

The Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24

The ACR 90 is defined greater than or equal to (\>=) 90 percent (%) improvement in painful and tender joint count; \>= 90% improvement in swollen joint count; and \>= 90% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant 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) at each visit.

Time frame: Week 12 and Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants that enrolled, took at least 1 dose of study medication, and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureGroupValue (NUMBER)
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 120.0 percentage of participants
PlaceboThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 24NA percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 2411.0 percentage of participants
INCB028050 4 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 123.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 120.0 percentage of participants
INCB028050 7 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 2410.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 123.0 percentage of participants
INCB028050 10 mg QDThe Percentage of Participants Achieving American College of Rheumatology (ACR) 90 Improvement at Week 12 and Week 24Week 2412.0 percentage of participants
Secondary

The Percentage of Participants Who Were Assigned to Active Treatment at Baseline Achieving ACR 20 Improvement at Week 24

The ACR 20 is defined as ≥ 20% improvement in tender joint count plus ≥ 20% improvement in swollen joint count plus ≥ 20% improvement in 3 of the following 5 criteria: participants' assessment of pain, participants' global assessment of disease activity (PGA), Physician's global assessment of disease activity (PHGA), participants' self-assessed disability Health Assessment Questionnaire (HAQ), and Erythrocyte sedimentation rate (ESR) or C-reactive protein (CRP), whichever shows the greatest change.

Time frame: From Baseline to Week 24

Population: Modified Intent-to-Treat (mITT) population included all participants who were assigned to active treatment at baseline and had both pre-dose and at least 1 post-baseline Rheumatoid arthritis (RA) assessment before Week 12.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboThe Percentage of Participants Who Were Assigned to Active Treatment at Baseline Achieving ACR 20 Improvement at Week 2418 Participants
INCB028050 4 mg QDThe Percentage of Participants Who Were Assigned to Active Treatment at Baseline Achieving ACR 20 Improvement at Week 2420 Participants
INCB028050 7 mg QDThe Percentage of Participants Who Were Assigned to Active Treatment at Baseline Achieving ACR 20 Improvement at Week 2418 Participants

Source: ClinicalTrials.gov · Data processed: Mar 7, 2026