A Study of CNTO 136 (Sirukumab) Administered Subcutaneously in Japanese Patients With Active Rheumatoid Arthritis Unresponsive to Methotrexate or Sulfasalazine

A TEAE was defined as an event that occurred in the treatment period during which it emerged (that is [i.e.] started or worsened in severity, relation, or other attribute), and even if the event continued to be present.

The ACR 20 Response is defined as greater than or equal to (>=) 20 percent improvement in swollen joint count (66 joints) and tender joint count (68 joints) and >=20 percent improvement in 3 of following 5 assessments: patient's assessment of pain using Visual Analog Scale (VAS; 0-10 millimeter [mm], 0 mm=no pain and 10 mm=worst possible pain), patient's global assessment of disease activity by using VAS (the scale ranges from 0 mm to 100 mm, [0 mm=no pain to 100 mm=worst possible pain]), physician's global assessment of disease activity using VAS, participant's assessment of physical function measured by Health Assessment Questionnaire-Disability Index (HAQ-DI, defined as a 20-question instrument assessing 8 functional areas. The derived HAQ-DI ranges from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area) and serum C-Reactive Protein (CRP).

The ACR 50 Response is defined as >=50 percent improvement in swollen joint count (66 joints) and tender joint count (68 joints) and >=50 percent improvement in 3 of following 5 assessments: patient's assessment of pain using VAS (0-10 mm, 0 mm=no pain and 10 mm=worst possible pain), patient's global assessment of disease activity by using VAS (the scale ranges from 0 mm to 100 mm, [0 mm=no pain to 100 mm=worst possible pain]), physician's global assessment of disease activity using VAS, participant's assessment of physical function measured by HAQ-DI and serum CRP.

The ACR 70 Response is defined as >=70 percent improvement in swollen joint count (66 joints) and tender joint count (68 joints) and >=70 percent improvement in 3 of following 5 assessments: patient's assessment of pain using VAS (0-10 mm, 0 mm=no pain and 10 mm=worst possible pain), patient's global assessment of disease activity by using VAS (the scale ranges from 0 mm to 100 mm, [0 mm=no pain to 100 mm=worst possible pain]), physician's global assessment of disease activity using VAS, participant's assessment of physical function measured by HAQ-DI and CRP.

The ACR 90 Response is defined as >=90 percent improvement in swollen joint count (66 joints) and tender joint count (68 joints) and >=90 percent improvement in 3 of following 5 assessments: patient's assessment of pain using VAS (0-10 mm, 0 mm=no pain and 10 mm=worst possible pain), patient's global assessment of disease activity by using VAS (the scale ranges from 0 mm to 100 mm, [0 mm=no pain to 100 mm=worst possible pain]), physician's global assessment of disease activity using VAS, participant's assessment of physical function measured by HAQ-DI and CRP.

Sixty six (66) joints were assessed for swelling by investigator to determine the number of joints that were considered swollen. A negative change from baseline in swollen joint count indicates improvement.

Sixty eight (68) joints were assessed for tenderness to determine the number of joints that were considered tender. A negative change from baseline in the tender joint count indicates improvement.

Participants assessed their average pain during the past week on a visual analogue scale (VAS). The scale ranged from 0 (no pain) to 10 (the worst possible pain).

Participants rated their disease activity using the Visual Analog Scale (VAS) on a scale of 0 (very well) to 10 (very poor).

Physician's Global Assessment of Disease Activity was assessed using the VAS on a scale of 0 (no arthritis activity) to 10 (extremely active arthritis).

The HAQ-DI is a 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping and activities of daily living). Responses in each functional area are scored from 0 to 3 (0=no difficulty and 3=inability to perform a task in that area). 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. Here, 'n' signifies those participants who were evaluable for the specific timepoint.

Serum CRP is a marker of systemic inflammation. A negative percent change from baseline in CRP represents improvement.

Major clinical response is achieving ACR 70 for 6 continuous months. The ACR 70 Response is defined as >=70 percent improvement in swollen joint count (66 joints) and tender joint count (68 joints) and >=70 percent improvement in 3 of following 5 assessments: patient's assessment of pain using VAS (0-10 mm, 0 mm=no pain and 10 mm=worst possible pain), patient's global assessment of disease activity by using VAS, (The scale ranges from 0 mm to 100 mm, [0 mm=no pain to 100 mm=worst possible pain]), physician's global assessment of disease activity using VAS, participant's assessment of physical function measured by HAQ-DI and CRP. Achievement of major clinical response reflects an enhanced level of therapeutic efficacy and sustained reduction of signs and symptoms of rheumatoid arthritis (RA).

The DAS28 based on C-Reactive Protein (CRP) is a statistically derived index combining tender joints (28 joints), swollen joints (28 joints), CRP and patient's global assessment of disease activity. The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, metacarpophalangeal (MCP) MCP1 to MCP5, proximal interphalangeal (PIP) PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. The values are 0=best to 10=worst. Good responders: improvement from baseline greater than (>) 1.2 with DAS28 less than or equal to (<=) 3.2; moderate responders: improvement from baseline >1.2 with DAS28 >3.2 to <=5.1 or improvement from baseline >0.6 to <=1.2 with DAS28 <=5.1; non-responders: improvement from baseline <=0.6 or improvement from baseline >0.6 and <=1.2 with DAS28 >5.1.

The DAS28 based on C-Reactive Protein (CRP) is a statistically derived index combining tender joints (28 joints), swollen joints (28 joints), CRP and patient's global assessment of disease activity. The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, metacarpophalangeal (MCP) MCP1 to MCP5, proximal interphalangeal (PIP) PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. DAS28 (CRP) remission is defined as a DAS28 (CRP) value of less than (<) 2.6 at any study visit.

The DAS28 based on C-Reactive Protein (CRP) is a statistically derived index combining tender joints (28 joints), swollen joints (28 joints), CRP and patient's global assessment of disease activity. The set of 28 joint count is based on evaluation of the shoulder, elbow, wrist, metacarpophalangeal (MCP) MCP1 to MCP5, proximal interphalangeal (PIP) PIP1 to PIP5 joints of both the upper right extremity and the upper left extremity as well as the knee joints of lower right and lower left extremities. The values are 0=best to 10=worst.

The SDAI score is a derived score combining tender joints (28 joints), swollen joints (28 joints), patient's global assessment of disease activity on VAS, physician's global assessments of disease activity on VAS, and CRP. SDAI-based ACR/EULAR remission is defined as a SDAI value of <=3.3 at the visit.

The Boolean based ACR/EULAR remission is achieved if all of the following 4 criteria at that visit are met: tender joint count (68 joints) <=1; swollen joint count (66 joints) <=1; CRP <=1 milligram per deciliter (mg/dL); and patient's global assessment of disease activity on visual analog scale (VAS) <=1 on a 0 to 10 scale.

The CDAI score is a derived score combining tender joints (28 joints), swollen joints (28 joints), patient's global assessment of disease activity, and physician's global assessments of disease activity. The total score range is 0-76. Score interpretation: Remission <=2.8; Low Disease Activity CDAI > 2.8 and <=10; Moderate Disease Activity CDAI >10 and <=22; High Disease Activity CDAI > 22.

The SDAI score is a derived score combining tender joints (28 joints), swollen joints (28 joints), patient's global assessment of disease activity, physician's global assessments of disease activity, and CRP. The total score range is 0-86. Score interpretation: Remission SDAI <=3.3; Low Disease Activity SDAI >3.3 and <=11; Moderate Disease Activity SDAI >11 and <=26; High Disease Activity SDAI >26.

The HAQ-DI is a 20-question instrument that assesses the degree of difficulty a participant has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living), each scored from 0 (no difficulty) to 3 (inability to perform a task in that area). 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 HAQ-DI is a 20-question instrument that assesses the degree of difficulty a participant has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living), each scored from 0 (no difficulty) to 3 (inability to perform a task in that area). HAQ-DI response was defined as change of > -0.22 from baseline in HAQ-DI score.

The HAQ-DI is a 20-question instrument that assesses the degree of difficulty a participant has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living), each scored from 0 (no difficulty) to 3 (inability to perform a task in that area). HAQ-DI responders who maintain a change from baseline of > -0.22 in HAQ-DI score.

HAQ-DI consisted of 20-question in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living), each scored from 0 (no difficulty) to 3 (inability to perform a task in that area). 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. AUC of change from baseline in HAQ-DI score is the AUC of change from baseline in HAQ-DI score versus the time. AUC was calculated based on the measurement (i.e., observed HAQ-DI score change from baseline) at scheduled visits using the trapezoidal rule. Functional status was determined as a cumulative measure of HAQ-DI over 1 year by using the AUC of the change from baseline in HAQ-DI score through week 52. Decreases in AUC of change from baseline in HAQ-DI indicate a greater average improvement in physical function over time.

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). Negative values for this outcome measure represent improvement, i.e. shortening of duration of morning stiffness.

The SF-36 is a survey of participant health. It consists of 8 individual domains, which are weighted sums of the questions in their section. The 8 domains are: vitality (VT), physical functioning (PF), bodily pain (BP), general health (GH), Role-Physical (RP), Role-Emotional (RE), social functioning (SF) and mental health (MH). Each of these 8 scales (domains) is scored from 0 to 100 with higher scores indicating better health. Based on the scale scores, the summary mental component score (MCS) is derived. Scales contributing most to the scoring of the SF-36 MCS include the VT, SF, RE and MH. Other domains not noted contribute to the scoring but to a lesser degree. The scoring is derived based on an algorithm that has been developed in a software provided by the developer. The summary MCS score is also scaled from 0 to 100 with higher scores indicating better health.

The SF-36 is a survey of participant health. It consists of 8 individual domains, which are weighted sums of the questions in their section. The 8 domains are: vitality (VT), physical functioning (PF), bodily pain (BP), general health (GH), Role-Physical (RP), Role-Emotional (RE), social functioning (SF) and mental health (MH). Each of these 8 scales (domains) is scored from 0 to 100 with higher scores indicating better health. Based on the scale scores, the summary physical component score (PCS) is derived. Scales contributing most to the scoring of the SF-36 PCS include the PF, RP, BP and GH. Other domains not noted contribute to the scoring but to a lesser degree. The scoring is derived based on an algorithm that has been developed in a software provided by the developer. The summary PCS score is also scaled from 0 to 100 with higher scores indicating better health.

The EQ-5D VAS records the participant's self-rated health on a vertical, VAS, with 0 representing the worst imaginable health state and 100 representing the best imaginable health state. The EQ VAS is used as a quantitative measure of health outcome as judged by the individual participant.

Change from Baseline to end point in Euro Quality of life (Qol)-5 Dimension Questionnaire (EQ-5D). A higher score indicates an improvement in health in the Health Status Index. The EuroQol-5 is a five dimensional health state classification. Each dimension is assessed on a 3-point ordinal scale (1=no problems, 2=some problems, 3=extreme problems). The responses to the five EQ-5D dimensions were scored using a utility-weighted algorithm to derive an EQ-5D health status index score between 0 to 1, with 1.00 indicating "full health" and 0 representing dead.