The purpose of this study is to assess the safety and efficacy of brodalumab taken every two weeks at two different doses in participants with moderate to severe plaque psoriasis. A second purpose of this study is to assess the safety and efficacy when brodalumab is replaced with placebo in some participants compared with the participants who are still receiving the brodalumab.
The purpose of this study is to assess the safety and efficacy of brodalumab taken every two weeks at two different doses.