Future trends in research in psoriatic arthritis.

Major advances have taken place in the study of psoriatic arthritis (PsA) in the past several decades. Future trends in research will likely be based on these advances and will span a wide spectrum of activities including further refinement of disease definition and particularly disease pattern. More precise definitions for axial and peripheral disease and in particular arthritis mutilans will be necessary for further genetic and biomarker studies. Early definition of PsA is crucial. Future research will concentrate on identifying genetic and other biomarkers for early diagnosis, disease expression, disease progression, and comorbidities. Newer therapies will be developed as well.