Maintenance Study Including Re-induction Therapy for Patients Who Did Not Show a Clinical Effect in Study C87037 (NCT00291668)

Maintenance Study Including Re-induction Therapy for Patients Who Did Not Show a Clinical Effect in Study C87037 (NCT00291668)

A Multi-center, Open-label Study to Investigate the Efficacy and Safety of CDP870 in Active Crohn's Disease Patients, Who Showed no Clinical Efficacy in a Remission Induction Study (Study C87037) But Showed Clinical Efficacy After Additional Remission Induction Therapy Was Applied, at Week 26 After Subcutaneous Administration of CDP870 400 mg From Week 8 Until Week 24 at 4-week Intervals

This 26-week extension study evaluates the efficacy and safety of certolizumab pegol administered subcutaneously every 4 weeks (dosed at Weeks 16, 20, 24, 28 and 32) in subjects with active Crohn's disease who had no clinical response at Week 6 to induction therapy in the 6-week double-blind main study, C87037 (NCT00291668), but subsequently showed clinical response at Week 14 to repeated induction therapy (dosed at Weeks 8, 10 and 12) in this extension study.

This study is an open-label extension study which follows on from the 6-week double-blind main study C87037 (NCT00291668). All 'Week' numbers quoted are relative to the start of the double-blind main study. The first visit in this extension study is at Week 8, and the final efficacy assessment in this extension study, 26 weeks later, is at Week 34.

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, 10, 12, 16, 20, 24, 28 and 32 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, 10, 12, 16, 20, 24, 28 and 32 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, 10, 12, 16, 20, 24, 28 and 32 relative to the start of the 6-week double-blind main study C87037 (NCT00291668) where subjects received Certolizumab pegol (CZP) 400 mg at Weeks 0, 2 and 4.

Crohn's disease activity index (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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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.

Crohn's disease activity index (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.

Crohn's disease activity index (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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Crohn's disease activity index (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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Crohn's disease activity index (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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 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 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

Crohn's disease activity index (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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

Crohn's disease activity index (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.

Crohn's disease activity index (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.

Crohn's disease activity index (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.

Crohn's disease activity index (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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Crohn's disease activity index (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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Percentage of Crohn's Disease Activity Index (CDAI) Responders at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

Crohn's disease activity index (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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

Crohn's disease activity index (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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

Crohn's disease activity index (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 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.

Crohn's disease activity index (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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

Crohn's disease activity index (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 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.

Crohn's disease activity index (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 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.

Crohn's disease activity index (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 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.

Crohn's disease activity index (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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Crohn's disease activity index (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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Crohn's disease activity index (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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Percentage of Subjects Achieving Remission at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

Crohn's disease activity index (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.

Last Visit (Week 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 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 14 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 14 to Week 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is the visit at which response to re-induction is assessed and 'Week 34' is 26 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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 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 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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Global Score at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 10

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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 14

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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 20

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 24

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 28

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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 32

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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Week 34

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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Bowel Domain Sub-Score at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 10

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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 14

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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 20

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 24

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 28

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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 32

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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Week 34

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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Systemic Domain Sub-Score at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 10

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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 14

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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 20

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 24

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 28

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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 32

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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Week 34

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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Emotional Domain Sub-Score at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 10

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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 14

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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

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

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 20

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 24

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 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 28

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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 32

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 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Week 34

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 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Change From Week 0 in Inflammatory Bowel Disease Questionnaire (IBDQ) Social Domain Sub-Score at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

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 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

Week 0 (relative to the start of the 6-week double-blind main study (N00291668)). '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 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after 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 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 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 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Week 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Week 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

C-Reactive Protein (CRP) Level at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

Last Visit (Week 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

The ratio is calculated as the C-Reactive Protein (CRP) Level at Week 8 divided by the CRP Level at Week 0

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 ratio is calculated as the C-Reactive Protein (CRP) Level at Week 10 divided by the CRP Level at Week 0

Week 0 and Week 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

The ratio is calculated as the C-Reactive Protein (CRP) Level at Week 12 divided by the CRP Level at Week 0

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 ratio is calculated as the C-Reactive Protein (CRP) Level at Week 14 divided by the CRP Level at Week 0

Week 0 and Week 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

The ratio is calculated as the C-Reactive Protein (CRP) Level at Week 16 divided by the CRP Level at Week 0

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 ratio is calculated as the C-Reactive Protein (CRP) Level at Week 20 divided by the CRP Level at Week 0

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 ratio is calculated as the C-Reactive Protein (CRP) Level at Week 24 divided by the CRP Level at Week 0

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 ratio is calculated as the C-Reactive Protein (CRP) Level at Week 28 divided by the CRP Level at Week 0

Week 0 and Week 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

The ratio is calculated as the C-Reactive Protein (CRP) Level at Week 32 divided by the CRP Level at Week 0

Week 0 and Week 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

The ratio is calculated as the C-Reactive Protein (CRP) Level at Week 34 divided by the CRP Level at Week 0

Week 0 and Week 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Ratio of C-Reactive Protein (CRP) Level at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals) to CRP Level at Week 0

The ratio is calculated as the C-Reactive Protein (CRP) Level at Last Visit (Week 34 for completers or the Withdrawal Visit for premature withdrawals)divided by the CRP Level at Week 0

Week 0 and Last Visit (Week 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

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

70-point responders are subjects 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.

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 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Week 10

70-point responders are subjects 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.

Week 0 and Week 10 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 10' is 2 weeks after the first visit in this extension study.

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

70-point responders are subjects 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.

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 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Week 14

70-point responders are subjects 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.

Week 0 and Week 14 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 14' is 6 weeks after the first visit in this extension study.

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

70-point responders are subjects 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.

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

70-point responders are subjects 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.

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

70-point responders are subjects 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.

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 Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Week 28

70-point responders are subjects 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.

Week 0 and Week 28 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 28' is 20 weeks after the first visit in this extension study.

Percentage of Subjects Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Week 32

70-point responders are subjects 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.

Week 0 and Week 32 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 32' is 24 weeks after the first visit in this extension study.

Percentage of Subjects Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Week 34

70-point responders are subjects 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.

Week 0 and Week 34 (relative to the start of the 6-week double-blind main study (NCT00291668)). 'Week 34' is 26 weeks after the first visit in this extension study.

Percentage of Subjects Achieving a Reduction in Crohn's Disease Activity Index (CDAI) Score of ≥70 Points From Week 0 at Last Visit (Week 34 for Completers or the Withdrawal Visit for Premature Withdrawals)

70-point responders are subjects 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.

Week 0 and Last Visit (Week 34 relative to the start of the 6-week double-blind main study (NCT00291668) for completers or the Withdrawal Visit for premature withdrawals). 'Week 34' is 26 weeks after the first visit in this extension study.

Inclusion Criteria: Subjects who gave written informed consent and who did not show clinical efficacy at Week 6 of the double-blind main study (NCT00291668) [reduction in Crohn's Disease Activity Index (CDAI) score of ≥100 points from Week 0, or remission (CDAI ≤150)] Exclusion Criteria: Subjects who experienced aggravation of Crohn's Disease during the double-blind main study (NCT00291668) and required treatment change