The primary aim of the trial will be to determine, among psoriatic arthritis (PsA) patients with an inadequate response (IR) to a tumor necrosis factor inhibitor (TNFi), whether switching to a new mechanism of action (MOA), specifically guselkumab (GUS), a selective interleukin 23 inhibitor (IL23i) targeting the p19 subunit, is more effective than switching to another TNFi. The primary hypothesis of this study is that switching to a new MOA may be more effective than switching to a second TNFi. This will be the first trial to test such a switch in PsA patients. Additionally, the proposed study will address the effectiveness of a new therapy, GUS, in a clinical practice setting among patients who are TNF IR.
The trial is a double-blinded randomized study that will examine whether switching to a selective IL23 inhibitor (guselkumab) is more effective than switching to a second TNFi (golimumab) among patients with PsA who have an inadequate response to a TNFi.