autoimmune vessel wall inflammation vasculitis
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Over 18 years of age. Study population: Diagnosis Granulomatosis with polyangiitis (GPA; Wegener), or Microscopic polyangiitis according to the 1994 Chapel Hill Consensus conference Positive at any time point for PR3- or MPO-ANCA. Since patients can change from inactive to active patients over time, patients can be included at any time point in their disease course.;Control population: Either any person who reports him or her selves as being healthy, does not use any immune modulating medication and wants to donate blood. Or disease controls being diagnosed with Systemic Lupus Erythematosus, Rheumatoid Arthritis, Sjogren Syndrome or Giant Cell Arteriitis, as judged by the principle investigator.
Exclusion criteria
Exclusion criteria: Unable to consent Unable to donate blood
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The difference of the number/function of the regulatory B cells in patients who relapse versus the patients that do not relapse, the disease controls and with the healthy controls. | — |
Countries
Netherlands