Combined immunodeficiency
MONDO:0015131A broad classification of inherited disorders presenting at birth that affect both the cell-mediated and humoral aspects of the immune response. Circulating numbers of B lymphocytes, T lymphocytes and NK cells are variable but where present do not function properly. Susceptibility to infection is the primary concern.
Also known as: CID, congenital combined immunodeficiency, X-linked combined immunodeficiency, combined T and B cell immunodeficiency, combined T cell and B cell immunodeficiency
64 clinical trials for this condition and its sub-types.
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Broader categories
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Stem cell transplant offers new hope for kids with rare immune diseases
Disease control OngoingThis study tests a donor stem cell transplant for people with severe immune system problems, like SCID and Wiskott-Aldrich syndrome. The goal is to help the body make healthy blood cells and fight infections. Participants receive donated stem cells to rebuild their immune system.…
Phase: NA • Sponsor: Masonic Cancer Center, University of Minnesota • Aim: Disease control
Last updated Jun 27, 2026 14:00 UTC
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Bubble boy disease gets a gene fix: new trial offers hope
Disease control ENROLLING_BY_INVITATIONThis study tests a new gene therapy for X-linked severe combined immunodeficiency (X-SCID), a rare immune disorder. Doctors take a person's own stem cells, fix a faulty gene using a technique called base editing, and return the cells to the body. The goal is to rebuild the immune…
Phase: PHASE1, PHASE2 • Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Disease control
Last updated Jun 27, 2026 13:00 UTC
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Gene therapy for 'Bubble Boy' disease under Long-Term watch
Disease control ENROLLING_BY_INVITATIONThis study follows about 50 people with a rare immune disorder called ADA-SCID who have received a gene therapy treatment called Strimvelis. The goal is to track their health for many years to see if the treatment remains safe and effective. Researchers will monitor for side effe…
Sponsor: Fondazione Telethon • Aim: Disease control
Last updated Jun 27, 2026 12:36 UTC
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Gentler transplant shows promise for kids with blood diseases
Disease control OngoingThis study tests a milder chemotherapy and immune-suppressing regimen before a stem cell transplant for children and young adults with non-malignant blood disorders like sickle cell disease or immune deficiencies. The goal is to safely achieve donor cell engraftment with fewer si…
Phase: PHASE2 • Sponsor: Children's Hospital of Philadelphia • Aim: Disease control
Last updated Jun 27, 2026 12:28 UTC
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Milder stem cell transplant shows promise for kids with immune disorders
Disease control OngoingThis study tests a stem cell transplant using a milder chemotherapy-like regimen to treat children and young adults (up to age 28) with various immune system disorders. The goal is to help the donor stem cells settle in the body with fewer side effects. The study involves 20 part…
Phase: PHASE2 • Sponsor: Washington University School of Medicine • Aim: Disease control
Last updated Jun 27, 2026 09:06 UTC
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Can lower chemo doses help babies with SCID build better immunity?
Disease control OngoingThis phase 2 trial studies whether lower doses of the chemotherapy drug busulfan can help infants with severe combined immunodeficiency (SCID) achieve good immune function after a stem cell transplant, while reducing short- and long-term risks. The trial includes 56 babies receiv…
Phase: PHASE2 • Sponsor: Center for International Blood and Marrow Transplant Research • Aim: Disease control
Last updated Jun 27, 2026 09:05 UTC
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Double transplant breakthrough offers hope for rare immune disorder patients
Disease control ENROLLING_BY_INVITATIONThis study tests a new approach for people aged 5 to 45 with primary immune deficiencies and end-stage lung disease. Participants receive a double lung transplant followed by a stem cell transplant from the same donor. The goal is to see if this combined procedure is safe and can…
Phase: PHASE1, PHASE2 • Sponsor: Paul Szabolcs • Aim: Disease control
Last updated Jun 27, 2026 08:04 UTC
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SCID stem cell trial pulled before it began
Disease control TerminatedThis study aimed to see if lower doses of chemotherapy drugs, with or without radiation, could safely prepare children and adults with SCID for a stem cell transplant. The goal was to help the donor cells take hold while avoiding severe side effects. However, the trial was withdr…
Phase: PHASE1, PHASE2 • Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Disease control
Last updated Jun 27, 2026 08:00 UTC
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New stem cell approach could fix immune systems in kids
Disease control OngoingThis Phase II trial tests a stem cell transplant from unrelated or partially matched family donors for children and young adults with severe immune deficiencies. The stem cells are specially processed to remove certain immune cells, aiming to reduce complications. The goal is to …
Phase: PHASE2 • Sponsor: Children's Hospital of Philadelphia • Aim: Disease control
Last updated Jun 27, 2026 07:56 UTC
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Gene therapy trial aims to fix 'Bubble Boy' disease in newborns
Disease control TerminatedThis study tests a gene therapy for infants with X-linked severe combined immunodeficiency (SCID-X1), a life-threatening condition where babies lack a working immune system. Researchers take the baby's own bone marrow stem cells, add a normal copy of the faulty gene using a lenti…
Phase: PHASE1, PHASE2 • Sponsor: St. Jude Children's Research Hospital • Aim: Disease control
Last updated Jun 27, 2026 07:56 UTC
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Gene therapy aims to stop severe infections in rare immune disorder
Disease control OngoingThis trial tests a gene therapy called OTL-103 for people with Wiskott-Aldrich syndrome, a rare genetic disorder that weakens the immune system and causes bleeding. The therapy uses the patient's own blood stem cells, modified in a lab to carry a working copy of the faulty gene, …
Phase: PHASE3 • Sponsor: Fondazione Telethon • Aim: Disease control
Last updated Jun 27, 2026 07:52 UTC
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Newborn screening study aims to catch rare diseases at birth
Diagnosis OngoingThis study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…
Sponsor: RTI International • Aim: Diagnosis
Last updated Jul 03, 2026 00:00 UTC
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Could methadone ease agonizing mouth pain in kids after transplant?
Symptom relief TerminatedThis study tests whether adding methadone to usual morphine-based pain medicine reduces severe mouth pain in children aged 6–18 who are getting a stem cell transplant for leukemia, aplastic anemia, or similar conditions. The mouth pain is a common side effect of the chemotherapy …
Phase: PHASE3 • Sponsor: University of Texas Southwestern Medical Center • Aim: Symptom relief
Last updated Jun 27, 2026 07:55 UTC
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Scientists collect skin cells to pave way for future immune disease cures
Knowledge-focused ENROLLING_BY_INVITATIONThis study collects small skin samples from people with primary immunodeficiency or immune regulation disorders, as well as from healthy volunteers. Researchers will use these cells to create cell lines for laboratory research. The goal is to better understand immune diseases and…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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New study hopes to outsmart pancreatic cancer by gathering clues
Knowledge-focused OngoingThis study collects health information and test results from 317 people at high risk for pancreatic cancer, including those with cysts, genetic syndromes, or other risk factors. Researchers aim to build a database to find better ways to detect the disease early or prevent it. No …
Sponsor: H. Lee Moffitt Cancer Center and Research Institute • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:03 UTC
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Brazilian study to reveal how well medical cannabis really works in daily life
Knowledge-focused ENROLLING_BY_INVITATIONThis observational study will follow 384 patients in Brazil who are using cannabis-based products (like CBD or THC oils) prescribed by their own doctors for chronic pain, anxiety, or depression. Researchers will not provide the medication but will track patients' quality of life,…
Sponsor: Santa Catarina Federal University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:02 UTC
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Gene therapy survivors monitored for decades in new study
Knowledge-focused ENROLLING_BY_INVITATIONThis study follows 70 people who previously received gene therapy for a rare immune disorder called ADA-SCID. Researchers want to see how well the treatment worked over time and check for any long-term side effects. No new treatment is given—just regular health checkups.
Sponsor: University of California, Los Angeles • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:05 UTC