Novel Therapeutic Approaches and Targets for Treatment of Psoriasis

Background: Psoriasis is a multifactorial immune-mediated inflammatory disease, with a chronic relapsing-remitting course, which affects 2-3% of the worldwide population. Psoriasis involves skin, joints, or both, and it is associated with several comorbidities, including metabolic, rheumatological, cardiovascular, psychiatric complications, and other chronic inflammatory diseases, which are the expression of the complex underlying pathogenetic mechanism. An accurate characterization of the immune pathways involved in psoriasis led to recognize the new molecules, (IL)17 and 23, which become the new target of biologic therapy for moderate-to-severe plaque psoriasis. Objective: The aim of this study is to collect data of literature about IL-17 and IL-23 inhibitors. Methods: A descriptive review was conducted to identify the main data in the literature evaluating novel biologic treatments currently available: IL-17 inhibitors (secukinumab, ixekizumab and brodalumab) and IL-23 inhibitors (guselkumab, tildrakizumab and risankizumab). Results: Dosing regimens, administration, efficacy, real-life efficacy and safety of IL-17 and IL-23 inhibitors are discussed in detail. Conclusion: Currently approved novel biologic therapies for moderate to severe psoriasis revealed increasing effectiveness compared to previous biological therapy and a good safety profile.