DAS28 (CRP) calculated swollen joint count (SJC) and tender joint count (TJC) using the 28 joints, general health (GH) using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst), and CRP (milligram per Liter [mg/L]). Total score range: 0-9.4, higher score= more disease activity. DAS28 (CRP) less than (<) 3.2 = low disease activity, greater than or equal to (>=) 3.2 to 5.1 = moderate to high disease activity and <2.6= remission. A Day 85 responder was defined as a participant who experienced more than 1.2 decrease from baseline in DAS28 (CRP) score at Day 85.

The intent-to-treat (ITT) population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 (CRP) calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst), and CRP (mg/L). Total score range: 0-9.4, higher score= more disease activity. DAS28 (CRP) <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. A Day 85 responder was defined as a participant who experienced more than 1.2 decrease from baseline in DAS28 (CRP) score at Day 85. DAS28 (CRP) response at Day 85 for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for the specified region for each arm, respectively.

DAS28 (ESR) calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst), and the erythrocyte sedimentation rate (ESR) (millimeters per hour [mm/hour]). Total score range: 0-9.4, higher score = more disease activity. DAS28 (ESR) <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. A Day 85 responder was defined as a participant who experienced more than 1.2 decrease from baseline in DAS28 (ESR) score at Day 85.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 (ESR) calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst), and the erythrocyte sedimentation rate (ESR) (millimeters per hour [mm/hour]). Total score range: 0-9.4, higher score = more disease activity. DAS28 (ESR) <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. A Day 85 responder was defined as a participant who experienced more than 1.2 decrease from baseline in DAS28 (ESR) score at Day 85. DAS28 (ESR) response at Day 85 for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for the specified region for each arm, respectively.

DAS28 (CRP) response by EULAR category were used to measure individual response as none, moderate, and good, depending on the extent of change from baseline and the level of disease activity reached. Good response: change from baseline >1.2 with baseline DAS28 (CRP) <3.2; moderate response: change from baseline >1.2 with baseline DAS28 (CRP) >=3.2 to less than or equal to (=<) 5.1 or change from baseline >=0.6 to =< 1.2 with baseline DAS28 (CRP) >=3.2 to =<5.1; no response: change from baseline <0.6 or change from baseline >=0.6 and =<1.2 with baseline DAS28 (CRP) >5.1.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 (CRP) response by EULAR category were used to measure individual response as none, moderate, and good, depending on the extent of change from baseline and the level of disease activity reached. Good response: change from baseline >1.2 with baseline DAS28 (CRP) <3.2; moderate response: change from baseline >1.2 with baseline DAS28 (CRP) >=3.2 to =< 5.1 or change from baseline >=0.6 to =< 1.2 with baseline DAS28 (CRP) >=3.2 to =<5.1; no response: change from baseline <0.6 or change from baseline >=0.6 and =<1.2 with baseline DAS28 (CRP) >5.1. DAS28 (CRP) response by EULAR category at Day 85 for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for the specified region for each arm, respectively.

DAS28 (ESR) response by EULAR category were used to measure individual response as none, moderate, and good, depending on the extent of change from baseline and the level of disease activity reached. Good response: change from baseline >1.2 with baseline DAS28 (ESR) <3.2; moderate response: change from baseline >1.2 with baseline DAS28 (ESR) >=3.2 to =< 5.1 or change from baseline >=0.6 to =< 1.2 with baseline DAS28 (ESR) >=3.2 to =<5.1; no response: change from baseline <0.6 or change from baseline >=0.6 and =<1.2 with baseline DAS28 (ESR) >5.1.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 (ESR) response by EULAR category were used to measure individual response as none, moderate, and good, depending on the extent of change from baseline and the level of disease activity reached. Good response: change from baseline >1.2 with baseline DAS28 (ESR) <3.2; moderate response: change from baseline >1.2 with baseline DAS28 (ESR) >=3.2 to =< 5.1 or change from baseline >=0.6 to =< 1.2 with baseline DAS28 (ESR) >=3.2 to =<5.1; no response: change from baseline <0.6 or change from baseline >=0.6 and =<1.2 with baseline DAS28 (ESR) >5.1. DAS28 (ESR) response by EULAR category at Day 85 for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for the specified region for each arm, respectively.

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up Day 169 that were absent before treatment or that worsened relative to pretreatment state.

The safety population included all participants who received any dose of investigational product.

Vital sign assessments included blood pressure, pulse rate, temperature, and respiration rate. Vital signs abnormalities reported as TEAEs were reported.

The safety population included all participants who received any dose of investigational product.

12-lead ECG was recorded and corrected QT (QTc) interval was measured with the participant in a rested supine position for at least 10 minutes. Any ECG abnormality deemed clinically significant as per investigator's discretion were reported.

The safety population included all participants who received any dose of investigational product.

FEV1 was the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration. FVC was the volume of air which can be forcibly exhaled from the lungs after taking the deepest breath possible.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

FEV1 was the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration. FVC was the volume of air which can be forcibly exhaled from the lungs after taking the deepest breath possible. FEV1 and FVC at Day 85 for the European and Japanese regions were reported.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

FEV1 was the maximal volume of air exhaled in the first second of a forced expiration from a position of full inspiration. FVC was the volume of air which can be forcibly exhaled from the lungs after taking the deepest breath possible.

The safety population included all participants who received any dose of investigational product. Here "n" signifies participants who were evaluable for this measure at the specified time point for each arm, respectively.

DLCO is a pulmonary function test that measures the partial pressure difference between inspired and expired carbon monoxide.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

DLCO is a pulmonary function test, and measures the partial pressure difference between inspired and expired carbon monoxide. DLCO% for the European and Japanese regions were reported.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

DLCO is a pulmonary function test, and measures the partial pressure difference between inspired and expired carbon monoxide.

The safety population included all participants who received any dose of investigational product. Here "n" signifies participants who were evaluable for this measure at the specified time point for each arm, respectively.

Modified Borg dyspnea scale is a validated participant reported outcome assessing participant's perceived difficulty in breathing (dyspnea). The scale ranges from 0 (nothing at all) to 10 (maximal difficulty). Higher scores indicate greater difficulty in breathing.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Modified Borg dyspnea scale is a validated participant reported outcome assessing participant's perceived difficulty in breathing (dyspnea). The scale ranges from 0 (nothing at all) to 10 (maximal difficulty). Higher scores indicate greater difficulty in breathing.

The safety population included all participants who received any dose of investigational product. Here "n" signifies participants who were evaluable for this measure at the specified time point for each arm, respectively.

Modified Borg dyspnea scale is a validated participant reported outcome assessing participant's perceived difficulty in breathing (dyspnea). The scale ranges from 0 (nothing at all) to 10 (maximal difficulty). Higher scores indicate greater difficulty in breathing. The modified BORG dyspnea scale was categorized as - no/slight (0 to 2), moderate (3 and 4), severe (5 and 6) and very severe breathlessness (7 and above).

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Oxygen saturation measured by pulse oximetry which measures the concentration of oxygen in the blood.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Oxygen saturation measured by pulse oximetry which measures the concentration of oxygen in the blood. Oxygen saturation for the European and Japanese regions were reported.

The safety population included all participants who received any dose of investigational product. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

Oxygen saturation measured by pulse oximetry which measures the concentration of oxygen in the blood.

The safety population included all participants who received any dose of investigational product. Here "n" signifies participants who were evaluable for this measure at the specified time point for each arm, respectively.

Any medically significant change in laboratory evaluations were recorded as adverse events. Following parameters were analyzed for laboratory examination: hematology (haemoglobin, reticulocytes, platelet count, white blood cell count, total neutrophils, eosinophils, monocytes, basophils, lymphocytes, mean corpuscular volume, mean corpuscular haemoglobin concentration); serum chemistry (creatinine, glucose, calcium, sodium, potassium, chloride, total bicarbonate, aspartate aminotransferase, alanine aminotransferase, total bilirubin, alkaline phosphatase, gamma glutamyl transferase, CRP, ESR, albumin, total cholesterol, triglycerides, rheumatoid factor and anti-cyclic citrullinated peptide antibodies); urinalysis (albumin, glucose, protein, blood, nitrite).

The safety population included all participants who received any dose of investigational product.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified time point for each arm, respectively.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. DAS28 (CRP) and DAS28 (ESR) for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. Remission was defined as less than 2.6 DAS28 (ESR) or DAS28 (CRP) score.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. Remission was defined as less than 2.6 DAS28 (ESR) or DAS28 (CRP) score. DAS28 (CRP) and DAS28 (ESR) for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. Response was defined as 1.2 decrease from baseline in DAS28 (CRP) or DAS28 (ESR) score. Remission was defined as less than 2.6 DAS28 (CRP) or DAS28 (ESR) score.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. Response was defined as 1.2 decrease from baseline in DAS28 (CRP) or DAS28 (ESR) score. Remission was defined as less than 2.6 DAS28 (CRP) or DAS28 (ESR) score. Time to response for DAS28 (CRP) and DAS28 (ESR) by region were reported. Time to remission for DAS28 (CRP) and DAS28 (ESR) by region were not analyzed because time to remission for the overall study population could not be achieved.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

DAS28 calculated SJC and TJC using the 28 joints, GH using participant assessment of disease activity (participant rated arthritis activity using the numerical rating scale with 0 = best, 10 = worst) and CRP (mg/L) for DAS28 (CRP) or ESR (mm/hour) for DAS28 (ESR). Total score range: 0-9.4, higher score = more disease activity. DAS28 <3.2 = low disease activity, >=3.2 to 5.1 = moderate to high disease activity and <2.6= remission. Response was defined as 1.2 decrease from baseline in DAS28 (CRP) or DAS28 (ESR) score. Remission was defined as less than 2.6 DAS28 (CRP) or DAS28 (ESR) score. Expected duration of response (DOR) was calculated as response rate (in percentage) multiplied by mean DOR (in days) by using Weibull Model. Duration of DAS28 (CRP) and DAS28 (ESR) remission were not analyzed because very few participants achieved remission in the overall study population.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified parameter for each arm, respectively.

ACR20, ACR50, and ACR70, were defined as greater than or equal to (>=) 20 percent (%),>=50%, or >=70% improvement, respectively, in: swollen joint count and tender joint count and >=20%, >=50%, or >=70% improvement, respectively, 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).

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

ACR20, ACR50, and ACR70, were defined as >=20%, >=50%, or >=70% improvement, respectively, in: SJC and TJC and >=20%, >=50%, or >=70% improvement, respectively, 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 HAQ); and CRP. Data for the European and Japanese regions were reported.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

ACR20, ACR50, and ACR70, were defined as >=20%, >=50%, or >=70% improvement, respectively, in: SJC and TJC and >=20%, >=50%, or >=70% improvement, respectively, 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 HAQ); and CRP. ACR responses were categorized as "No response", "ACR20 but not ACR50", "ACR50 but not ACR70", and "ACR70".

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

ACR score - continuous (ACRn) was defined as the minimum of the percentage improvement in TJC, SJC and the median of the percentage improvements in the other five components of the ACR criteria (participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; disability index of the HAQ; and CRP). Total score range was -100 to 100, where negative numbers indicated worsening and positive numbers indicated improvement.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

ACR score - continuous (ACRn) was defined as the minimum of the percentage improvement in TJC, SJC and the median of the percentage improvements in the other five components of the ACR criteria (participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; disability index of the HAQ; and CRP). Total score range was -100 to 100, where negative numbers indicated worsening and positive numbers indicated improvement. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

Number of swollen joints was determined by examination of 66 joints and identifying when swelling was present. The number of swollen joints was recorded on the joint assessment form, no swelling = 0, swelling =1. Number of tender joints was determined by examining 68 joints and identified the joints that were painful under pressure or to passive motion. The number of tender joints was recorded on the joint assessment form, no tenderness = 0, tenderness = 1.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Number of swollen joints was determined by examination of 66 joints and identifying when swelling was present. The number of swollen joints was recorded on the joint assessment form, no swelling = 0, swelling =1. Number of tender joints was determined by examining 68 joints and identified the joints that were painful under pressure or to passive motion. The number of tender joints was recorded on the joint assessment form, no tenderness = 0, tenderness = 1. Data for the European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Physician Global Assessment of Arthritis was measured on a 0 to 10 centimeter (cm) Visual Analogue Scale (VAS), where 0 cm = very good and 10 cm = very bad.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Physician Global Assessment of Arthritis was measured on a 0 to 10 cm VAS, where 0 cm = very good and 10 cm = very bad. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Participants responded to a question, "Considering all the ways your arthritis affects you, how are you feeling today?" by using a 0 - 100 millimeter (mm) VAS, where 0 = very well and 100 = very poorly.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Participants responded to a question, "Considering all the ways your arthritis affects you, how are you feeling today?" by using a 0 - 100 mm VAS, where 0 = very well and 100 = very poorly. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Participants rated the severity of arthritis pain on a 0 to 100 mm VAS, where 0 mm = no pain and 100 mm = most severe pain.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Participants rated the severity of arthritis pain on a 0 to 100 mm VAS, where 0 mm = no pain and 100 mm = most severe pain. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

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.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

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. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

Participants were asked to assess the severity of pain in the past week on a 100 VAS with 0 being no pain and 100 being severe pain.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Participants were asked to assess the severity of pain in the past week on a 100 VAS with 0 being no pain and 100 being severe pain. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

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.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

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. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

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.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

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. Data for European and Japanese regions were reported.

ITT population. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for this measure for the specified region for each arm, respectively.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "N" (number of participants analyzed) signifies participants who were evaluable for this measure.

Additional medication included concomitant medication (medication used for purposes other than managing rheumatoid arthritis [RA]) and RA medication (for managing RA). Number of participants who used concomitant medication and RA medication was reported by anatomical therapeutic chemical (ATC) classification system.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues.

Participants received MTX at stable and tolerated dose during baseline were categorized as "low dose (<12.5 mg per week [mg/wk])", "medium dose (>=12.5 - <20 mg/wk)", and "high dose (>=20 mg/wk)". Participants received oral CST at stable dose during baseline were categorized as "low dose (<5 mg/day)", and "high dose (>=5 mg/day)". Change in MTX and CST dose from baseline between Day 1-85 and Day 86-169 were categorized as follows: 'Increased', 'no change' and 'decreased'. Participants were counted once with dose increases counted first, followed by no change and then dose decreases.

The ITT population analysis set included all randomized participants regardless of whether participants received any investigational product. Six participants were excluded from the ITT population for data integrity issues. Here "n" signifies participants who were evaluable for the specified parameter for each arm, respectively.

Data for European and Japanese regions were reported.

The pharmacokinetic (PK) population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

Accumulation ratio was calculated as ratio of AUCtau after last dose and AUCtau after first dose. Data for European and Japanese regions were reported.

The PK population included all participants who received mavrilimumab and for whom serum concentrations of mavrilimumab were available for PK data analyses. Here "N" signifies participants who were evaluable for this measure and "n" signifies participants who were evaluable for the specified region for each arm, respectively.

ADA detection measured by using electrochemiluminescence assays.

The immunogenicity population included all participants who received at least 1 dose of CAM-3001 and for whom at least one serum sample for immunogenicity testing was available.