Clinical trials · California
Down Syndrome clinical trials in California
We’re tracking 276 recruiting down syndrome studies with a site in California — including Early Phase 1, Phase 1, Phase 1/Phase 2, Phase 2, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05979441Enrolling by invitationPhase 3
Long-term safety of efgartigimod injection for myositis
This study tests the long-term safety and effectiveness of a subcutaneous (under-the-skin) version of efgartigimod for adults with active idiopathic inflammatory myopathy. It is for people who have already completed an earlier study of this medicine.
Beverly Hills, CaliforniaAges 18 years+ - NCT06566664Enrolling by invitation
Nerve stimulation to help with arm surgery nerve blocks
This study tests if using a small electrical stimulator on the skin can make a nerve block work better for arm surgery. If you are having planned arm surgery and getting a nerve block, you may be able to join.
Stanford, CaliforniaAges 18 years+ - NCT03952299RecruitingPhase 3
Oxybutynin patch after bladder surgery for children’s urgency pain
This study tests whether an oxybutynin skin patch after bladder surgery can reduce bladder pain and urgent, frequent urination in children. It compares symptoms after surgery to see if the patch helps more than the control plan.
Sacramento, CaliforniaAges 4–8 - NCT03779854RecruitingPhase 2
Preventing graft-versus-host disease in kids after stem cell transplant
This trial tests whether removing certain immune cells (T cells) from the donor transplant can lower the risk of chronic graft-versus-host disease (long-term immune attack after transplant) in children and young adults with blood cancers. If you qualify, it may help improve transplant outcomes while tracking safety and side effects.
Los Angeles, CaliforniaAges 6 months–26 years - NCT06086379Enrolling by invitation
Cognitive rehab therapy for COVID-related thinking problems in Veterans
This study tests a cognitive rehabilitation therapy designed to help Veterans who have memory and thinking problems after COVID-19. It aims to improve daily mental function and quality of life.
San Diego, CaliforniaAges 18 years+ - NCT03452774Recruiting
AI matches your cancer tests to possible treatment trials
This trial uses an AI system to help match people with certain cancer types and specific tumor test results (like gene or protein markers) to relevant clinical trials. It may help you and your doctor find studies that fit your cancer biology faster.
Duarte, CaliforniaAges Any age - NCT03604835Recruiting
MPS VII monitoring program for patients and caregivers
This trial enrolls people with mucopolysaccharidosis type VII (MPS VII) to track their health over time. It may help your care team better understand how the condition behaves and how monitoring should be done.
Orange, CaliforniaAges Any age - NCT03816345RecruitingPhase 1
Nivolumab for advanced cancer with autoimmune conditions
This Phase 1 study tests nivolumab, an immunotherapy “anti-cancer accelerator,” in people with advanced cancer who also have an autoimmune disorder. It aims to see if nivolumab can be given safely and whether it may help shrink or control cancer.
Palo Alto, 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.
Los Angeles, CaliforniaAges 18 years+ - NCT03949855RecruitingPhase 2
Belimumab plus rituximab for primary membranous nephropathy
This study tests whether adding belimumab to rituximab helps people with primary membranous nephropathy (a kidney disease) that has the right blood test marker and specific protein levels. The goal is to improve kidney outcomes and reduce disease activity while keeping treatment safe.
San Francisco, CaliforniaAges 18–75 - NCT04064060RecruitingPhase 3
Long-term safety follow-up for luspatercept study participants
This trial studies the long-term safety of luspatercept (ACE-536) in people who already took part in an earlier luspatercept study. It mainly helps doctors better understand ongoing side effects and overall safety over time.
Los Angeles, CaliforniaAges 18 years+ - NCT04144972Recruiting
Closed-loop deep brain stimulation for long-lasting nerve pain
This trial tests a “smart” deep brain stimulation device that senses your brain signals and adjusts treatment to reduce severe, long-lasting pain. It may help people whose pain has not improved with multiple pain medicines and surgery cannot fix the cause.
San Francisco, CaliforniaAges 22–80 - NCT04256317RecruitingPhase 2/Phase 3
Azacitidine pills with or without venetoclax for certain blood cancers
This study tests whether a pill form of azacitidine (ASTX030) helps people with myelodysplastic syndromes (MDS), CMML, or AML. Some groups may also receive venetoclax; the goal is better blood cancer control for people who aren’t good candidates for intensive chemotherapy.
Los Angeles, CaliforniaAges 18 years+ - NCT04524247Recruiting
Testing a custom stent graft for frail aortic aneurysms
This study looks at a specialized, customized stent graft to treat certain aneurysms (bulges) of the aorta in people who may be considered frail. It’s meant to see how well the device works and how safely it can be used in patients who fit specific aneurysm patterns.
Los Angeles, CaliforniaAges 18 years+ - NCT04527445Recruiting
Test to use less X-ray during sacral nerve lead placement
This trial studies whether doctors can place a sacral neuromodulation lead using fewer X-rays. If you’re getting this procedure for overactive bladder, it may help reduce radiation exposure while still guiding correct lead placement.
Loma Linda, CaliforniaAges 18–89 - 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 - NCT04545424RecruitingPhase 2
Testing cooling treatment for severe lung failure in ICU patients
This trial tests whether therapeutic cooling (hypothermia) can improve outcomes in people with ARDS, a serious lung condition causing breathing failure. It may help by reducing harmful inflammation and lung injury, but eligibility is time-sensitive and requires ICU monitoring.
Los Angeles, CaliforniaAges 18–85 - NCT04546399RecruitingPhase 2
Blinatumomab with or without nivolumab for first relapse ALL
This study compares blinatumomab alone versus blinatumomab plus nivolumab in young people whose B-cell ALL has returned for the first time. It aims to see whether adding nivolumab improves control of the leukemia after relapse.
San Francisco, CaliforniaAges 1–30 - NCT04669548Recruiting
Accuryn monitoring study for people having heart surgery
This registry collects information from patients who are monitored with the Accuryn system during heart surgery and their ICU stay. It helps researchers learn from the system’s signals to better understand patient care around cardiac procedures.
San Francisco, CaliforniaAges 18 years+ - NCT04885179Recruiting
Study of SPLIS genetics and patient experiences
This observational study and patient registry collects information from people diagnosed with SPLIS due to specific changes in the SGPL1 gene, including children and newborns. It helps researchers understand the condition better and may improve future care and research planning.
San Francisco, CaliforniaAges Any age - NCT04771130RecruitingPhase 1/Phase 2
Study of BGB-11417 for blood cancers
This early-phase study tests BGB-11417 in people with certain bone-marrow (blood) cancers such as AML, MDS, or MDS/MPN. The goal is to find out how the medicine works and whether it can control the cancer.
Duarte, CaliforniaAges 18 years+ - 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 - NCT04988555RecruitingPhase 1/Phase 2
Study of an investigational drug for high-risk acute leukemia
This Phase 1/2 study tests enzomenib (DSP-5336) in people with relapsed or hard-to-treat acute leukemia (and, in some places, certain other blood cancers). The goal is to see how the drug works and how safe it is, especially for leukemia cases with specific genetic changes (KMT2A/MLL or NPM1).
Newport Beach, CaliforniaAges 12 years+
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.
- Stanford University · 4 studies
- University of California, San Francisco · 4 studies
- Cedars-Sinai Medical Center · 3 studies
- City of Hope Comprehensive Cancer Center · 3 studies
- Children's Hospital Los Angeles · 2 studies
- Children's Hospital of Orange County · 2 studies
- The Lundquist Institute at Harbor-UCLA Medical Center · 2 studies
- University of California Davis Comprehensive Cancer Center · 2 studies
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 276 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.