Common variable immunodeficiency

This study tests whether a stem cell transplant can cure people with serious immune system disorders. Participants, aged 4 to 69, receive healthy donor stem cells to rebuild their immune system. The goal is to see if the transplant can permanently fix the immune defect and elimin…

This study tests whether a stem cell transplant from a healthy donor can help people with severe primary immunodeficiencies. Participants aged 4 to 75 receive chemotherapy before the transplant to prepare their body. The goal is to see if the procedure is safe and can improve imm…

This study tests whether IgPro20 (HIZENTRA), a concentrated antibody solution given under the skin, can prevent infections in people with multiple myeloma who have low antibody levels due to bispecific antibody therapy. About 100 participants will either receive IgPro20 plus stan…

This phase 2 trial tests whether abatacept (Orencia) can improve lung disease in people with common variable immunodeficiency (CVID). About 38 children and adults will receive either the drug or a placebo for 6 months. The main goal is to see if lung damage on CT scans shrinks by…

This study tests a stem cell transplant for people with common variable immunodeficiency (CVID) and other immune disorders. The goal is to replace the faulty immune system with a healthy donor's stem cells. Participants are aged 5 to 40 and will receive a reduced-intensity transp…

This study looks at whether a simple breathing test (spirometry) can help doctors decide the right dose of immunoglobulin therapy for people with common variable immune deficiency (CVID). Researchers will enroll 22 adults with CVID who already take a stable dose of Hizentra. Half…

This study tests a new antibody replacement therapy (BP-SCIG 20%) given as a weekly injection under the skin. It aims to see if it is safe and effective at preventing serious infections in people with primary immunodeficiency, a condition where the immune system cannot produce en…

This study tests whether a 12-week, app-guided exercise program is safe and practical for adults with primary antibody deficiencies—conditions where the immune system struggles to fight infections. Researchers will track how many people join and finish the program, how often they…

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 aims to understand the causes and progression of Common Variable Immunodeficiency (CVID) and related inborn errors of immunity. Researchers will observe up to 500 patients over time using blood tests, imaging, and other exams. The goal is to find better ways to diagnos…

This study follows 900 people with bronchiectasis—a condition where airways are damaged and prone to infection—to learn why they get sick repeatedly. Researchers will collect medical history, lung function tests, and blood, urine, and sputum samples from patients and their family…

This study looks at why some people with Common Variable Immunodeficiency (CVID) develop complications not caused by infections. Researchers will test whether a type of immune cell called peripheral helper T-cells (Tph) helps faulty B-cells produce antibodies that lead to these c…