Clinical trials · California
Down Syndrome clinical trials in California
We’re tracking 263 recruiting down syndrome studies with a site in California — including Early Phase 1, Phase 1, Phase 1/Phase 2, Phase 2, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06927739RecruitingPhase 2
Orticumab for heart artery inflammation after a heart attack
This trial tests a drug called orticumab to see if it can reduce inflammation in the arteries of the heart after a heart attack. It may help prevent future heart problems.
Los Angeles, CaliforniaAges 18 years+ - NCT02852031Recruiting
Care program for newborns needing the Norwood procedure
This trial focuses on improving care for babies born with certain complex heart conditions where only one pumping chamber works. It is meant for babies (including unborn babies) who are planned to have the Norwood procedure, which is a common early surgery.
Palo Alto, CaliforniaAges Up to 1.3 years - NCT06859424RecruitingPhase 2
Testing a new GVHD prevention method after donor stem cell transplant
This trial tests a new way to prevent graft-versus-host disease (a common side effect of stem cell transplant) using a drug called cyclophosphamide after transplant. It is for adults with certain blood cancers who need a transplant from a partially matched unrelated donor.
Palo Alto, CaliforniaAges 18–66 - NCT06865885RecruitingPhase 4
Lowering cholesterol with inclisiran in people on many medications
This study tests a new injectable medicine called inclisiran for people who are already on many medications and have high cholesterol. It is designed for those who cannot lower their cholesterol enough with statins, especially if they have diabetes or other heart risks.
La Jolla, CaliforniaAges 18–85 - NCT04987775RecruitingEarly Phase 1
Study of NAC for Gulf War illness in veterans
This early-stage study tests the treatment called NAC to understand how it may work in veterans with Gulf War illness–related symptoms like fatigue and brain/mood changes. It also looks at “mechanisms,” meaning what’s happening in the body and brain while you’re in the study.
Palo Alto, CaliforniaAges 47–70 - NCT06834282RecruitingPhase 1
A study of CER-1236 for certain blood cancers
This trial tests an experimental cell therapy called CER-1236 for people with acute myeloid leukemia, myelodysplastic syndrome, or myelofibrosis. It aims to see if it can help treat these cancers.
Sacramento, CaliforniaAges 18–85 - NCT06827262Recruiting
A procedure for vertebrogenic back pain relief
This trial tests a minimally invasive procedure that uses a special device to target and treat nerve-related back pain coming from the vertebrae (the bones in your spine). It may offer lasting relief without more major surgery.
Larkspur, CaliforniaAges 18 years+ - NCT06815003RecruitingPhase 2
Preventing Graft-Versus-Host Disease After Stem Cell Transplant
This trial tests a combination of three drugs (vedolizumab, cyclophosphamide, and tacrolimus) to prevent graft-versus-host disease, a common complication after a donor stem cell transplant. It is for people with certain blood cancers who are getting a reduced-intensity transplant.
Duarte, CaliforniaAges 18–80 - NCT06789445RecruitingPhase 1/Phase 2
Cell therapy for inherited retinal disease (CLARICO)
This study tests a new cell therapy (OpCT-001) for adults with inherited retinal diseases that affect the light-sensing cells. It aims to see if the treatment is safe and possibly helps improve vision.
Los Angeles, CaliforniaAges 18 years+ - NCT05219617RecruitingPhase 3
Carisbamate for frequent drop seizures in Lennox-Gastaut
This Phase 3 study tests whether carisbamate can reduce drop seizures in people with Lennox-Gastaut syndrome (LGS). It also checks whether the treatment is safe when added to existing seizure medicines.
Palo Alto, CaliforniaAges 4–55 - NCT05736146Recruiting
Testing Gulf War illness blood markers for better diagnosis
This study checks blood tests to see whether they can help confirm Gulf War illness. If you qualify as having Gulf War illness (or are a similar Gulf War veteran without it), your blood and health information may be used to validate these marker tests.
Palo Alto, CaliforniaAges 35 years+ - NCT06727422RecruitingPhase 2
Rifaximin plus NAC for IBS with diarrhea
This trial tests whether a combination of two medications—rifaximin (a gut antibiotic) and NAC (a supplement that helps break down mucus)—can reduce belly pain and diarrhea in people with IBS whose symptoms are not well controlled. It may be an option if other treatments haven't worked well enough.
Los Angeles, CaliforniaAges 18 years+ - NCT06735664RecruitingPhase 1
Zanubrutinib and odronextamab for Richter's transformation
This trial tests a combination of two targeted drugs for people with Richter's transformation, an aggressive lymphoma that can develop from CLL. The goal is to see if this combination can help control the disease.
Duarte, CaliforniaAges 18 years+ - NCT06715787Recruiting
Perinatal support program for pregnant people
This trial tests a support program for pregnant individuals who qualify for certain food assistance benefits. It aims to see if the program helps with pregnancy and infant health.
Los Angeles, CaliforniaAges 18 years+ - NCT06691178Recruiting
Vaginal changes after CO2 laser therapy
This study looks at how CO2 laser therapy affects the vagina in people who have gone through menopause and have genitourinary symptoms like dryness or discomfort. It aims to understand the benefits and changes that happen after treatment.
Irvine, CaliforniaAges 18 years+ - NCT04532424Recruiting
Brain stimulation for repetitive behaviors in autism
This trial tests whether transcranial magnetic stimulation (a non-surgical treatment using magnets on the scalp) can reduce restricted and repetitive behaviors seen in autism. It’s designed for people with autism who have high levels of certain repetitive behaviors, like insistence on sameness or unusual interests.
Stanford, CaliforniaAges 12–45 - NCT06656494RecruitingPhase 1
New drug combo for myeloid blood cancers
This trial tests a new drug (ICP-248) combined with standard treatment azacitidine for people with acute myeloid leukemia (AML) or myelodysplastic syndromes (MDS). It aims to find out if the combo is safe and effective for those who haven't been helped by other treatments or cannot have strong chemotherapy.
Orange, CaliforniaAges 18 years+ - NCT03850574RecruitingPhase 1/Phase 2
Tuspetinib for relapsed or hard-to-treat AML
This early-phase study tests tuspetinib in people with AML that has come back or did not respond to treatment. The goal is to learn whether it is safe and tolerable, how the drug behaves in the body, and whether it shows signs of benefit.
Palo Alto, CaliforniaAges 18 years+ - NCT06566664Enrolling by invitation
Peripheral neurostimulation for improving nerve block placement in upper limb surgery
This study looks at using peripheral neurostimulation to improve the placement of nerve blocks for upper limb surgery. It may help you get better pain control during and after your operation.
Stanford, CaliforniaAges 18 years+ - NCT06551584RecruitingPhase 1
Advanced blood cancer trial with stem cell transplant
This trial tests a new approach for people with advanced blood cancers who are getting a donor stem cell transplant. It aims to improve outcomes by using your own regulatory T cells along with the donor cells.
Palo Alto, CaliforniaAges 18–70 - NCT06539507RecruitingPhase 1
Study of BCX17725 for Netherton syndrome safety
This trial tests a new drug called BCX17725 in people with Netherton syndrome to see if it is safe and how the body handles it. It may help by reducing skin symptoms like redness and scaling.
Palo Alto, CaliforniaAges 12–65 - NCT06543381RecruitingPhase 1
Olutasidenib for IDH1-mutated blood cancers after transplant
This trial tests a drug called olutasidenib for people with certain blood cancers (AML, MDS, or CMML) that have a specific IDH1 gene change. The goal is to see if it can help prevent relapse after a donor stem cell transplant.
Duarte, CaliforniaAges 18 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 - NCT06508164Recruiting
International registry for rare RYR2 variants
This study creates a registry for people with rare changes in the RYR2 gene that affect heart function. Researchers will collect information to better understand these conditions and improve care.
San Francisco, CaliforniaAges Any age
Down Syndrome trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting down syndrome studies listed above.
- City of Hope · 6 studies
- Stanford University · 3 studies
- Children's Hospital Los Angeles · 2 studies
- Stanford University Hospital · 2 studies
- University of California, Irvine · 2 studies
- Abcentra Investigational Site
- Beckman Laser Institute
- Cedars-Sinai Medical Center
What taking part in a down syndrome 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.
Down Syndrome trials in other states
Common questions
- Are there down syndrome clinical trials in California?
- Yes. We're currently tracking 263 recruiting down syndrome 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 down syndrome 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 down syndrome 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 down syndrome 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.