A Narrative Review of Secukinumab in Spondyloarthritis and Psoriatic Arthritis: Treating the Whole Patient

Spondyloarthritis (SpA), including axial spondyloarthritis (axSpA) and psoriatic arthritis (PsA), comprises a diverse but interrelated family of inflammatory diseases characterized by inflammation of the joints and spine. Signs and symptoms of SpA vary widely, as patients experience a diverse spectrum of musculoskeletal and extra-musculoskeletal disease manifestations. Interleukin (IL)-17 is an inflammatory cytokine common to the pathogenesis of SpA disease development and progression. The IL-17A inhibitor secukinumab has been well established in clinical trials and real-world practice as an effective therapeutic tool to efficiently manage SpA indications axSpA and PsA in adults, as well as juvenile PsA (jPsA) and enthesitis-related arthritis (ERA), which are two subtypes of juvenile idiopathic arthritis. This review highlights the comprehensive response to IL-17 inhibition with secukinumab across SpA indications of PsA, axSpA, and ERA/jPsA and within each indication according to established disease domains. We provide context through expert commentary on the effect of inhibiting IL-17 with secukinumab on the full spectrum of SpA disease manifestations, as well as areas in need of further investigation.