A Multi-Center, Double-Blind Study to Evaluate the Safety, Efficacy and Pharmacokinetics of the Human Anti-TNF Monoclonal Antibody Adalimumab in Pediatric Subjects With Moderate to Severe Crohn's Disease

All subjects received an open-label adalimumab induction regimen. Subjects weighing greater than or equal to 40 kg at Baseline received 160 mg at Week 0 and 80 mg at Week 2. Subjects weighing less than 40 kg at Baseline received 80 mg at Week 0 and 40mg at Week 2.

Subjects randomized to the Low-Dose treatment group received either 20 mg adalimumab every other week (eow) (if Week 4 body weight \[BW\] was greater than or equal to 40 kg) or 10 mg adalimumab eow (if Week 4 BW less than 40 kg). Starting at the Week 12 study visit, subjects who experienced a disease flare or were non-responders could be switched from blinded eow dosing to blinded every week (ew) dosing, continuing with the same blinded dose. If a subject continued to experience a flare or met the definition of non-response following an 8-week course of double-blind (DB) ew therapy they could be switched to open-label ew therapy.

Subjects randomized to the High-Dose treatment group received either 40 mg adalimumab every other week (eow) (if Week 4 body weight \[BW\] was greater than or equal to 40 kg) or 20 mg adalimumab eow (if Week 4 BW less than 40 kg). Starting at the Week 12 study visit, subjects who experienced a disease flare or were non-responders could be switched from blinded eow dosing to blinded every week (ew) dosing, continuing with the same blinded dose. If a subject continued to experience a flare or met the definition of non-response following an 8-week course of double-blinded (DB) ew therapy they could be switched to open-label ew therapy.