Psoriatic arthritis clusters, obtained by machine learning (ML) analysis of pooled data from the FUTURE, MEASURE, and MAXIMISE trials, indicate phenotypical heterogeneity of patients with PsA and axial manifestations and overlapping features across the spondyloarthritis spectrum. Here, Baraliakos, et al. sort to identify distinct clinical clusters, based on patient demographics and baseline clinical indicators, from the secukinumab clinical development programme.