Microscopic Polyangiitis Clinical Trial
Official title:
Determining Disease Activity Biomarkers in Individuals With Granulomatosis With Polyangiitis (Wegener's) and Microscopic Polyangiitis
Granulomatosis with polyangiitis (Wegener's) (GPA) and microscopic polyangiitis (MPA) are two rare immune system disorders that cause the inflammation of blood vessels, or vasculitis. In order to properly treat these diseases, it is critical that the level of disease activity can be determined over the course of the disease. The purpose of this study is to determine new biological markers, or biomarkers, that may be used to assess the severity of disease in people with GPA or MPA.
GPA and MPA are two autoimmune disorders that cause systemic vasculitis. GPA commonly affects the upper respiratory tract, the lungs, and the kidneys. MPA is marked by kidney inflammation, weight loss, skin lesions, nerve damage, and fever. Many patients with WG or MPA show no visible symptoms of active disease; it is known that underlying subclinical disease activity leads to long-term damage in these patients. Also, because it is difficult to monitor WG and MPA disease activity, it is difficult for clinicians to know when and how to treat these patients. This study will use new scientific methods to identify new biomarkers that can be used to monitor disease activity in GPA and MPA patients. These biomarkers may be used to help direct clinical care for GPA and MPA patients and assist in future drug development. Study visits will occur monthly for the first year, then every 3 months thereafter for the remainder of the study. Blood and urine collection will occur at every visit. A physical exam and medical and medication history will occur every 3 months; also, participants will be asked to complete several questionnaires to assess disease activity, health status, and tobacco, alcohol, and drug use. Participants may have additional study visits if a disease flare or disease-related complications occur during the study. ;
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