An Open-label Extension Study Evaluating the Safety and Efficacy of Upadacitinib (ABT-494) in Adults With Rheumatoid Arthritis

Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR20 response criteria:

• ≥ 20% improvement in 68-tender joint count;
• ≥ 20% improvement in 66-swollen joint count; and
• ≥ 20% improvement in at least 3 of the 5 following parameters:

• Physician global assessment of disease activity
• Patient global assessment of disease activity
• Patient assessment of pain
• Health Assessment Questionnaire - Disability Index (HAQ-DI)
• High-sensitivity C-reactive protein (hsCRP).

Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR50 response criteria:

• ≥ 50% improvement in 68-tender joint count;
• ≥ 50% improvement in 66-swollen joint count; and
• ≥ 50% improvement in at least 3 of the 5 following parameters:

• Physician global assessment of disease activity
• Patient global assessment of disease activity
• Patient assessment of pain
• Health Assessment Questionnaire - Disability Index (HAQ-DI)
• High-sensitivity C-reactive protein (hsCRP).

Participants who met the following 3 conditions for improvement from Baseline were classified as meeting the ACR70 response criteria:

• ≥ 70% improvement in 68-tender joint count;
• ≥ 70% improvement in 66-swollen joint count; and
• ≥ 70% improvement in at least 3 of the 5 following parameters:

• Physician global assessment of disease activity
• Patient global assessment of disease activity
• Patient assessment of pain
• Health Assessment Questionnaire - Disability Index (HAQ-DI)
• High-sensitivity C-reactive protein (hsCRP).

Satisfactory humoral response is defined as greater than or equal to 2-fold increase in antibody concentration from the vaccination Baseline in at least 6 out of the 12 pneumococcal antigens 1, 3, 4, 5, 6B, 7F, 9V, 14, 18C, 19A, 19F and 23F).

The DAS28(CRP) is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity (measured on a VAS from 0-100 mm), and hsCRP (in mg/L). Scores on the DAS28 (CRP) range from 0 to approximately 10, where higher scores indicate more disease activity.

LDA is defined as a DAS28(CRP) score ≤ 3.2.

The DAS28 (CRP) is a composite index used to assess rheumatoid arthritis disease activity, calculated based on the tender joint count (out of 28 evaluated joints), swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity (measured on a VAS from 0-100 mm), and hsCRP (in mg/L). Scores on the DAS28 (CRP) range from 0 to approximately 10, where higher scores indicate more disease activity.

Clinical remission is defined as a DAS28(CRP) score < 2.6.

The clinical disease activity index (CDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, and Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm. The total CDAI score ranges from 0 to 78 with higher scores indicating higher disease activity.

LDA is defined as a CDAI score ≤ 10.

The clinical disease activity index (CDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, and Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm. The total CDAI score ranges from 0 to 78 with higher scores indicating higher disease activity.

Clinical remission is defined as a CDAI score ≤ 2.8.

The simplified disease activity index (SDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm and hsCRP (mg/dL). The total SDAI score ranges from 0 to 86 with higher scores indicating higher disease activity.

LDA is defined as a SDAI score ≤ 11.0.

The simplified disease activity index (SDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm and hsCRP (mg/dL). The total SDAI score ranges from 0 to 86 with higher scores indicating higher disease activity.

Clinical remission is defined as a SDAI score ≤ 3.3.

The disease activity score-28-CRP (DAS28 [CRP]) assesses RA disease activity based on a continuous scale of combined measures of 28 tender joint counts (TJC28), 28 swollen joint counts (SJC28), C-reactive protein (CRP), and the patient global assessment of disease activity (measured on a visual analog scale from 0 to 100 mm). DAS28(CRP) scores range from 0 to approximately 10 where higher scores indicate more disease activity. A negative change from Baseline in DAS28 (CRP) indicates improvement in disease activity.

The clinical disease activity index (CDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, and Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm. The total CDAI score ranges from 0 to 78 with higher scores indicating higher disease activity. A negative change from Baseline indicates improvement in disease activity.

The simplified disease activity index (SDAI) is a composite index for assessing disease activity based on the summation of the counts of tender joint count (out of 28 evaluated joints) and swollen joint count (out of 28 evaluated joints), Patient's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm, Physician's Global Assessment of Disease Activity measured on a VAS from 0 to 10 cm and hsCRP (mg/dL). The total SDAI score ranges from 0 to 86 with higher scores indicating higher disease activity. A negative change from Baseline indicates improvement in disease activity.

Sixty-eight joints were assessed by an evaluator for tenderness or pain. The presence of tenderness was scored as a "1" and absence of tenderness as a "0". The total tender joint count is the sum of the scores, and ranges from 0 to 68 (worst).

Sixty-six joints were assessed by an evaluator for swelling. The presence of swelling was scored as a "1" and absence of swelling as a "0". The total swollen joint count is the sum of the scores, and ranges from 0 to 66 (worst).

The physician rated the participant's current global RA disease activity (independently from the participant's assessment) on a visual analog scale (VAS) from 0 to 100 mm, where 0 mm indicates no disease activity and 100 mm indicates severe disease activity

The participant was asked to rate their current RA disease activity over the past 24 hours on a 100 mm VAS, where 0 mm indicates very low disease activity and 100 mm indicates very high disease activity.

Participants were asked to indicate the severity of their arthritis pain within the previous week on a visual analog scale from 0 to 100 mm. A score of 0 mm indicates "no pain" and a score of 100 mm indicates "worst possible pain."

The Health Assessment Questionnaire - Disability Index is a patient-reported questionnaire that measures the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and errands and chores) over the past week. Participants assessed their ability to do each task on a scale from 0 (without any difficulty) to 3 (unable to do). Scores were averaged to provide an overall score ranging from 0 to 3, where 0 represents no disability and 3 represents very severe, high-dependency disability.

The FACIT Fatigue scale is a 13-item tool that measures an individual's level of fatigue during their usual daily activities over the past 7 days. Each of the fatigue and impact of fatigue items are measured on a four point Likert scale (4 = not at all fatigued to 0 = very much fatigued). The FACIT Fatigue Scale is the sum of the individual 13 scores and ranges from 0 to 52 where higher scores indicate better quality of life. A positive change from Baseline indicates improvement.

RA-WIS is a tool to evaluate work instability (the consequence of a mismatch between an individual's functional ability and their work tasks). RA-WIS consists of 23 questions relating to the participant's functioning in their work environment, each answered as Yes or No. The total score is the number of questions answered Yes, and ranges from 0 to 23.

A score < 10 means low risk, scores between 10 and 17 indicate medium risk, and scores > 17 indicate high risk of work instability.

A negative change from Baseline indicates improvement in work instability.

The EQ-5D-5L is a generic measure of health status consisting of two parts. The first part (the descriptive system) assesses health in five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each of which is rated on 5 levels of severity (1: no problem, 2: slight problems, 3: moderate problems, 4: severe problems, 5: extreme problems).

A health state index score was calculated from individual health profiles using a UK scoring algorithm. Health state index scores generally range from less than 0 (where 0 is the value of a health state equivalent to dead; negative values representing values as worse than dead) to 1 (the value of full health), with higher scores indicating higher health utility. The higher the score the better the health status. A positive change from baseline indicates improvement in health status.

The EQ-5D-5L is a generic measure of health status consisting of two parts. The second part of the questionnaire consists of a visual analog scale (VAS) on which the participant rates his/her perceived health from 0 (the worst imaginable health) to 100 (the best imaginable health).

A positive change from baseline indicates improvement.

Satisfactory humoral response is defined as greater than or equal to 2-fold increase in antibody concentration from the vaccination Baseline in at least 6 out of the 12 pneumococcal antigens 1, 3, 4, 5, 6B, 7F, 9V, 14, 18C, 19A, 19F and 23F).