Project description:In the phase 3 VOYAGE-1 trial (ClinicalTrials.gov identifier: NCT02207231), guselkumab demonstrated superior efficacy versus placebo and the tumor necrosis factor (TNF)-α antagonist, adalimumab, in patients with moderate-to-severe plaque psoriasis (Blauvelt et al., 2017). Here, skin samples were collected from patients in VOYAGE-1 and pharmacodynamic (PD) responses to guselkumab (vs adalimumab) treatment were assessed over 48 weeks.