Mastocytosis

This study evaluates whether new blood tests can more accurately diagnose the cause of recurrent angioedema—a condition causing severe swelling—compared to current tests. Researchers will compare novel diagnostic assays with traditional ones in 600 people aged 12 and older who ha…

This study collects bone marrow and blood samples from up to 600 people with mastocytosis, a condition where too many mast cells cause symptoms like itching and bone pain. Researchers will study what makes these cells grow and survive. The goal is to learn more about the disease,…

This study is observing 400 people aged 12 and older who have noncirrhotic portal hypertension (NCPH) or are at risk for it. NCPH is a liver condition that increases blood pressure in the liver's blood vessels without causing cirrhosis, and often has no early symptoms. Researcher…

This study is creating a large database to collect information on people with rare diseases like amyloidosis, sarcoidosis, and Gaucher disease. Researchers will track patients' health over time, including their symptoms, treatments, and outcomes. The goal is to improve diagnosis …

This study looks at different forms of IgE (a protein involved in allergic reactions) in healthy volunteers and people with conditions like severe allergies, chronic hives, mastocytosis, and immune deficiencies. Researchers aim to understand how these IgE variations relate to hea…