Mass Spectrometry-based Immune Profiling in Autoimmune Diseases

The study will include patients with systemic lupus erythematosus, Sjogren's syndrome, inflammatory myopathy, systemic sclerosis, vasculitis, rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, osteoarthritis and gouty arthritis and healthy controls. About 50 patients of each type are required. The patients are in a state of disease activity and do not use biological agents. Their peripheral blood will be detected by mass spectrometry.