Clinical trials · California
Hematopoietic Stem Cell Transplant clinical trials in California
We’re tracking 53 recruiting hematopoietic stem cell transplant studies with a site in California — including Phase 1, Phase 1/Phase 2, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05887167RecruitingPhase 1
Test safety of making CAR T cells from your own blood
This Phase 1 study looks at whether it is safe and practical to collect your own stem cells and use them to support CAR T-cell therapy for certain blood cancers that have come back or did not respond. It aims to find the best way to combine these steps, which may help some people receive CAR T treatment.
Los Angeles, CaliforniaAges 18–85 - NCT05787574RecruitingPhase 2
Reducing inflammation before stem cell transplant in immune disorders
This Phase 2 study tests medicines that calm inflammation before the first stem cell transplant. It aims to make transplant safer and more effective for people with certain inherited immune regulation or inflammatory conditions.
San Francisco, CaliforniaAges Any age - NCT05757310RecruitingPhase 1
Stem cell transplant with lower-intensity chemo for severe aplastic anemia
This Phase 1 trial tests a “lower-intensity” chemotherapy plan followed by a stem cell transplant from a related half-match donor for severe aplastic anemia that has returned or did not respond to prior medicines. It aims to see if this approach is safe and works well enough to help your blood counts recover.
Duarte, CaliforniaAges Up to 75 years - NCT05711667RecruitingPhase 3
Letermovir to prevent CMV after stem cell transplant in kids
This trial tests whether the medicine letermovir can prevent a common virus (CMV) from coming back after an allogeneic stem cell transplant in children. It may help lower the risk of CMV infection during the vulnerable period right after transplant.
Oakland, CaliforniaAges 2–18 - NCT05564390RecruitingPhase 2
MyeloMATCH screening to match you to AML or MDS treatment
This study screens people with newly suspected acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS) to see which treatment approach fits best—either a specific study treatment or standard care. It may help by directing you to the right option and by sharing your blood/bone marrow samples for research.
Berkeley, CaliforniaAges 18 years+ - NCT05436418RecruitingPhase 1/Phase 2
Lower-dose transplant medicines to prevent graft-versus-host disease
This early-phase study tests a lower dose of cyclophosphamide given after a stem cell transplant to prevent graft-versus-host disease (GVHD). It also uses sirolimus and mycophenolate to improve how well the donor immune system accepts the transplant, aiming to reduce side effects while keeping protection against GVHD.
Duarte, CaliforniaAges 12–120 - NCT05432635RecruitingPhase 1
CAR T-cell and vaccine treatment after stem cell transplant
This Phase 1 study tests a customized immune-cell treatment (CAR T-cells) plus a vaccine given after stem cell transplant for certain aggressive B-cell non-Hodgkin lymphomas. It aims to help your immune system better recognize and attack the lymphoma and to see how safe the approach is.
Duarte, CaliforniaAges 18 years+ - NCT01629017Recruiting
Long-term follow-up after a stem cell transplant
This study looks at the long-term health effects of hematopoietic (blood-forming) stem cell transplants. It may help doctors better understand and manage late side effects for children and teens after transplant.
Stanford, CaliforniaAges Up to 18 years - NCT04997473Recruiting
Mobile app weight-loss program for young transplant patients
This trial tests whether a phone app can help young people who previously had a stem cell transplant lose weight. It’s designed for people who are at least 100 days out from transplant and who meet weight criteria.
Los Angeles, CaliforniaAges 13–30 - NCT04784052RecruitingPhase 1/Phase 2
Briquilimab with reduced donor stem cell transplant for Fanconi anemia
This study tests whether a reduced-intensity donor stem cell transplant (with briquilimab as part of the conditioning) can safely treat bone marrow failure in people with Fanconi anemia. It may help by lowering how much intensive treatment is needed before the transplant, while still helping the donor cells grow.
Stanford, CaliforniaAges 2 years+ - NCT04293562RecruitingPhase 3
Comparing chemotherapy options for newly diagnosed AML in young patients
This trial compares standard chemotherapy with newer drug combinations (CPX-351 and gilteritinib) for children and young adults with acute myeloid leukemia (AML), a type of blood cancer. It aims to find which treatment works better and who might benefit from targeted therapy based on specific genetic changes (FLT3 mutations).
Santa Barbara, CaliforniaAges 6 months–21 years - NCT04224558RecruitingPhase 1/Phase 2
Stem cell transplant for hard-to-control Crohn’s disease
This early-phase study tests whether a stem cell transplant can improve Crohn’s disease in teens and young adults whose disease is active and not responding to standard medicines. It may help some people who are not doing well despite several prior treatments, but it also involves intensive study procedures and safety checks.
Los Angeles, CaliforniaAges 13–28 - NCT04047628RecruitingPhase 3
MS patients with active relapsing disease comparing two treatment plans
This Phase 3 study compares the best standard MS treatment (chosen by your doctors) versus an approach called autologous hematopoietic stem cell transplant (AHSCT) for people with highly active, treatment-resistant relapsing multiple sclerosis. It aims to see which option controls MS disease activity better and keeps you safer over time.
Palo Alto, CaliforniaAges 18–55 - NCT04098445Recruiting
Study of lung injury in children after stem cell transplant
This study follows children and teens who get a stem cell transplant to learn how lung problems develop over time. Your participation could help doctors better predict, prevent, and manage lung injury after transplant.
San Francisco, CaliforniaAges Up to 24 years - NCT03943238RecruitingPhase 1
Kidney transplant with immune therapy to prevent rejection
This trial tests a combination of low-dose radiation, chemotherapy, and donor immune cells to help your body accept a living donor kidney without long-term anti-rejection drugs.
Palo Alto, CaliforniaAges 18–65 - NCT03591302RecruitingPhase 1
Stem cell transplant to stop anti-rejection drugs after kidney transplant
This study tries to use a stem cell transplant from your original kidney donor to help your body accept the kidney without needing lifelong anti-rejection drugs. You must have a perfectly matched sibling donor who is still available.
Palo Alto, CaliforniaAges 18 years+ - NCT03394365RecruitingPhase 3
Tabelecleucel for EBV-related lymphoma after transplant treatment failure
This trial tests tabelecleucel, an immune therapy, for people whose EBV-associated post-transplant lymphoproliferative disease (PTLD) did not respond to rituximab and/or chemotherapy. It may help your immune system better control EBV-driven lymphoma after a transplant.
Duarte, CaliforniaAges Any age - NCT03354728RecruitingPhase 1/Phase 2
Vaccine trial for children with CMV after stem cell transplant
This trial studies a vaccine designed to help the body fight cytomegalovirus (CMV) in children who test positive for CMV and are about to receive a donor stem cell transplant. If it works, it may reduce CMV-related illness during recovery after transplant.
Duarte, CaliforniaAges 1–21 - NCT03126916RecruitingPhase 3
Testing added therapy for high-risk neuroblastoma in children
This Phase 3 study tests whether adding either a targeted drug (lorlatinib) or a radioactive treatment (131I-MIBG) to intensive chemotherapy improves outcomes for children with high-risk neuroblastoma. It may help by aiming at tumor cells more directly alongside standard treatment.
San Diego, CaliforniaAges 12 months–30 years - NCT03279094RecruitingPhase 1
Testing a half-matched bone marrow transplant for sickle cell
This early-phase study tests whether a “half-matched” donor bone marrow transplant, with special medicines to calm the immune system before transplant, can improve outcomes for people with sickle cell disease. It may help high-risk patients who have frequent complications and don’t have a fully matched donor.
Duarte, CaliforniaAges 1–30 - NCT05443425RecruitingPhase 1
Leflunomide plus steroids for acute graft-versus-host disease
This early-phase trial tests whether adding leflunomide to standard steroid treatment can better control acute graft-versus-host disease (aGvHD) after a stem cell transplant. It may help reduce the immune reaction that damages the body while keeping treatment safe and manageable.
Duarte, CaliforniaAges 18 years+ - NCT04774536RecruitingPhase 1/Phase 2
CRISPR gene-edited bone marrow transplant for severe sickle cell
This Phase 1/2 study tests a CRISPR-edited bone marrow (stem cell) transplant to treat severe sickle cell disease. It aims to reduce dangerous sickle-related complications by changing the patient’s stem cells before transplant.
Oakland, CaliforniaAges 12–35 - NCT06575296RecruitingPhase 1
Revumenib after stem cell transplant for acute leukemia
This trial tests a drug called revumenib to help keep leukemia from coming back after a stem cell transplant. It is for people with specific genetic types of acute leukemia who have recently had or will soon have a transplant.
Duarte, CaliforniaAges 2 years+ - NCT06498973RecruitingPhase 1
Maintenance therapy after stem cell transplant for CD123-positive AML/MDS
This trial tests a combination of two drugs, tagraxofusp and azacitidine, given as maintenance therapy after a stem cell transplant. The goal is to prevent the leukemia or MDS from coming back in patients whose cancer cells carry a specific marker called CD123.
Duarte, CaliforniaAges 18–75
Where these studies are running in California
Institutions with a site for the recruiting hematopoietic stem cell transplant studies listed above.
- City of Hope · 9 studies
- Cedars-Sinai Medical Center · 4 studies
- UCSF Medical Center · 4 studies
- Kaiser Permanente-Oakland · 3 studies
- University of California, Davis · 3 studies
- Children's Hospital Los Angeles · 2 studies
- Children's Hospital of Orange County · 2 studies
- Kaiser Permanente Downey Medical Center · 2 studies
What taking part in a hematopoietic stem cell transplant study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Hematopoietic Stem Cell Transplant trials in other states
Common questions
- Are there hematopoietic stem cell transplant clinical trials in California?
- Yes. We're currently tracking 53 recruiting hematopoietic stem cell transplant studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a hematopoietic stem cell transplant study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a hematopoietic stem cell transplant trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New hematopoietic stem cell transplant studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.