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Transplants for blood cancers and blood disorders. Hematopoietic stem cell transplant replaces a person's blood forming system with their own stored cells or a donor's. Trials test safer conditioning, better donor matching, including half matched family donors for sickle cell disease, and ways to prevent graft versus host disease.
Transplants for autoimmune disease. Resetting the immune system with a person's own stem cells is being tested against the best available drugs in relapsing multiple sclerosis, in a Phase 3 trial funded by the National Institutes of Health at more than 20 US sites.
Mesenchymal stromal cells. Cells from bone marrow or fat that calm inflammation, tested for Crohn's disease, graft versus host disease, and hard to heal wounds. The first one was approved in 2024 after decades of trials.
Cells made from stem cells. Lab grown dopamine neurons for Parkinson's disease and insulin producing islet cells for type 1 diabetes, both now in or entering late stage trials.
Gene corrected stem cells. A person's own blood stem cells are edited to fix a mutation and returned. Two such therapies for sickle cell disease were approved in 2023; see gene therapy clinical trials. Immune cell therapies such as CAR T are a different technology, covered on our CAR T cell therapy page.
Stem cell transplants are part of care for leukemia, lymphoma, and multiple myeloma; each page lists its own studies.
New to research? Read how informed consent works.
Transplant trials enroll people with a specific diagnosis who are already candidates for transplant, which means good enough organ function to tolerate it and, for donor transplants, a suitable donor. The multiple sclerosis trial enrolls adults 18 to 55 with relapsing disease that keeps progressing despite treatment. Mesenchymal cell trials enroll people with the condition being tested, such as active Crohn's disease or a chronic wound. Trials of lab grown cells for Parkinson's or diabetes are small and usually at a few centers, with strict rules. Healthy volunteers are rarely needed, except as stem cell donors in some studies. Eligibility always varies by study.
Approved transplants carry real risks, including infection and graft versus host disease, and are done in specialized centers. Unapproved clinic injections have caused serious harm in reported cases. In a clinical trial, risks are explained during informed consent and you are monitored throughout.
A successful transplant rebuilds the blood system permanently. For newer therapies, how long the effect lasts is exactly what trials measure, often over years of follow up.
Some studies offer compensation for time and travel, and the study cell therapy and study visits are typically provided at no cost to participants; the hospital care around a transplant is usually billed as normal care. Exactly what is covered is described during the informed consent process before you agree to anything.
Curious whether clinical trials pay participants? Here's how compensation actually works.
Enrolling in a stem cell clinical trial through our platform is a straightforward and user-friendly process. Here's how to get started: