Maintenance Study of Certolizumab Pegol (CZP) in Crohn's Disease

A 26-week, Multi-center, Open-label Study to Investigate the Efficacy and Safety of CDP870 in Active Crohn's Disease Patients, Who Showed Clinical Efficacy in a Remission Induction Study (Study C87037 [NCT00291668]), at Week 26 After Subcutaneous Administration of CDP870 400 mg From Week 8 Until Week 24 at 4-week Intervals

This is a multi-centre, open-label extension study in subjects who showed clinical response to induction therapy in the treatment of subjects with active Crohn's disease in the double-blind main study C87037 (NCT00291668).

In the double-blind main study subjects were dosed at Weeks 0, 2 and 4, with the primary outcome, clinical response, being assessed at Week 6. Subjects who showed clinical response at Week 6 were eligible to enter this open-label extension study. The first visit in this extension study was 2 weeks after Week 6, i.e., Week 8. Subjects in this extension study were dosed at Weeks 8, 12, 16, 20 and 24, with the primary outcome, clinical response, being assessed at Week 26. All week numbers quoted are relative to the start of the double-blind main study.

Certolizumab pegol (CZP) 400 mg in this extension study / Placebo in double-blind main study (NCT00291668)

Certolizumab pegol (CZP) 400 mg in this extension study / Certolizumab pegol (CZP) 200 mg in double-blind main study (NCT00291668)

Certolizumab pegol (CZP) 400 mg in this extension study / Certolizumab pegol (CZP) 400 mg in double-blind main study (NCT00291668)

Certolizumab pegol (CZP) 400 mg administered subcutaneously in a liquid formulation at Weeks 8, 12, 16, 20 and 24 relative to the start of the 6-week double-blind main study C87037 (NCT00291668) where subjects received Placebo at Weeks 0, 2 and 4.

Certolizumab pegol (CZP) 400 mg administered subcutaneously in a liquid formulation at Weeks 8, 12, 16, 20 and 24 relative to the start of the 6-week double-blind main study C87037 (NCT00291668) where subjects received certolizumab pegol (CZP) 200 mg at Weeks 0, 2 and 4.

Certolizumab pegol (CZP) 400 mg administered subcutaneously in a liquid formulation at Weeks 8, 12, 16, 20 and 24 relative to the start of the 6-week double-blind main study C87037 (NCT00291668) where subjects received certolizumab pegol 400 mg at Weeks 0, 2 and 4.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 in Crohn's Disease Activity Index (CDAI) Score at Last Visit [Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals]

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Percentage of Crohn's Disease Activity Index (CDAI) Responders at Last Visit [Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals]

CDAI responders are subjects achieving either clinical response (a reduction in CDAI score of ≥100 points from Week 0), or remission (CDAI ≤150). CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Percentage of Subjects Achieving Remission at Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals)

The Crohn's Disease Activity Index (CDAI) is used to quantify the symptoms of subjects with Crohn's disease. A CDAI score of 150 or below indicates remission and a score above 450 indicates extremely severe disease.

Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Time to disease progression is defined as the earliest of: time to an increase from Week 6 of ≥100 points in Crohn's Disease Activity Index (CDAI) score and CDAI >175 points for at least 2 consecutive visits, time to use of rescue therapy, or, time to subject withdrawal from the study.

Week 6 to Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 6' is the last visit in the double-blind main study and 'Week 26' is 18 weeks after the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

The IBDQ Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) in Inflammatory Bowel Disease Questionnaire (IBDQ) Global Score

The Inflammatory Bowel Disease Questionnaire (IBDQ) Global Score is the sum of 32 responses, each ranging from 0 to 7, thus the Global Score ranges from 0 to 224; a higher score indicating a better quality of life.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Week 8 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Change From Week 0 to Week 12 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Change From Week 0 to Week 16 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Change From Week 0 to Week 20 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Change From Week 0 to Week 24 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Change From Week 0 to Week 26 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The IBDQ Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score

The Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Week 8 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Change From Week 0 to Week 12 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Change From Week 0 to Week 16 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Change From Week 0 to Week 20 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Change From Week 0 to Week 24 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Change From Week 0 to Week 26 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The IBDQ Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score

The Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Week 8 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Change From Week 0 to Week 12 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Change From Week 0 to Week 16 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Change From Week 0 to Week 20 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Change From Week 0 to Week 24 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Change From Week 0 to Week 26 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The IBDQ Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score

The Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Week 8 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Change From Week 0 to Week 12 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Change From Week 0 to Week 16 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Change From Week 0 to Week 20 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Change From Week 0 to Week 24 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Change From Week 0 to Week 26 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The IBDQ Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Change From Week 0 to Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score

The Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score is the sum of 8 responses, each ranging from 0 to 7, thus the Sub-Score ranges from 0 to 56; a higher score indicating a better quality of life.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Week 0 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 0' is the Baseline visit in the double-blind main study.

Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

C-Reactive Protein (CRP) Level at Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals)

Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Ratio of C-Reactive Protein (CRP) Level at Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) to Week 0

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Percentage of Subjects at Week 8 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 8 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 8' is the first visit in this extension study.

Percentage of Subjects at Week 12 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 12 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 12' is 4 weeks after the first visit in this extension study.

Percentage of Subjects at Week 16 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 16 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 16' is 8 weeks after the first visit in this extension study.

Percentage of Subjects at Week 20 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 20 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 20' is 12 weeks after the first visit in this extension study.

Percentage of Subjects at Week 24 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 24 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 24' is 16 weeks after the first visit in this extension study.

Percentage of Subjects at Week 26 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Week 26 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 26' is 18 weeks after the first visit in this extension study.

Percentage of Subjects at Last Visit (Week 26 for Completers or the Withdrawal Visit for Premature Withdrawals) Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0

CDAI is used to quantify the symptoms of subjects with Crohn's disease. A score of 150 or below indicates remission and a score above 450 indicates extremely severe disease. A decrease in CDAI over time indicates improvement in disease activity.

Week 0 and Last Visit (Week 26 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 26' is 18 weeks after the first visit in this extension study.

Inclusion Criteria: Subjects who participated in main double-blind induction study C87037 (NCT00291668) and showed clinical efficacy Exclusion Criteria: Subjects who experienced aggravation of Crohn's disease during main double-blind induction study C87037 (NCT00291668) and required treatment change