In August 2007, the study design was amended to incorporate an additional adalimumab induction dosing arm of 80/40 mg. Earlier that year, both 160/80-mg and 80/40-mg induction regimens had been approved in the EU as induction treatment for Crohn's disease. The adalimumab induction dosing regimen of 80/40 mg was therefore included so that both of these approved induction regimens would be evaluated for the induction of remission of UC.