Abstract
Guselkumab (Tremfya®) is a human immunoglobulin G1 λ (IgG1λ) monoclonal antibody (mAb) that blocks the interleukin-23 (IL-23)-mediated signalling pathway and is the first in its class to be approved in adults with moderate to severe plaque psoriasis in several countries, including the USA and EU. In the VOYAGE trials, guselkumab was superior to placebo and to adalimumab at week 16 in terms of the proportion of patients achieving an Investigator Global Assessment (IGA) score of 0/1 and ≥ 90% improvement from baseline in Psoriasis Area and Severity index score (PASI 90 response), with benefits of guselkumab over adalimumab maintained at week 24. To date, the beneficial effects of guselkumab treatment in these trials were maintained for up to 2 years. Inadequate responders to ustekinumab who were then randomized to guselkumab in NAVIGATE showed better responses than those randomized to ustekinumab between weeks 28–40, with a significantly greater mean number of visits at which patients had IGA 0/1 and ≥ 2-grade improvement in IGA score, as well as higher proportions of patients achieving PASI 90 and PASI 100 at week 52. Treatment with guselkumab improved health-related quality of life (HR-QOL) and patient-reported outcomes in all trials and was generally well tolerated. Guselkumab, administered by subcutaneous injection, is a useful new option for patients with moderate to severe plaque psoriasis.
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