Figure 2From: Progranulin antibodies entertain a proinflammatory environment in a subgroup of patients with psoriatic arthritisProgranulin antibodies in subpopulations of patients with psoriatic arthritis. The columns represent the percentage of progranulin antibody (PGRN Ab)-positive patients in different subgroups of psoriatic arthritis (PsA) compared to the average frequency of PGRN Abs in PsA patients (19.23%; horizontal line). HLA-B27: human leucocyte antigen B27; SpA: spondyloarthritis; TNF: tumour necrosis factor. *P = 0.016, **P = 0.001, ***P = 0.026, ****P = 0.001.Back to article page