California is currently home to 5602 active clinical trials, seeking participants for engagement in research studies. These trials take place at a variety of cities in the state, including Los Angeles, San Francisco, San Diego and Sacramento. Whether you're a healthy volunteer interested in paid medical research or someone seeking trials related to a specific condition, the state offers a diverse array of opportunities in your vicinity.
A Study to Learn More About the Effects and Long-Term Safety of BIIB141 (Omaveloxolone) in Participants With Friedreich's Ataxia Aged 2 to 15 Years Old
Recruiting
In this study, researchers will learn more about the effects and safety of BIIB141, also known as omaveloxolone or SKYCLARYS®. This drug has been approved, or made available for doctors to prescribe, for people with Friedreich's Ataxia (FA) who are at least 16 years old. But, it is not yet available for children and teens with FA who are younger than 16 years old. The main objective of this study is to learn how BIIB141 works in the body and about its safety in children and teens who are 2 to 15... Read More
Gender:
ALL
Ages:
Between 2 years and 15 years
Trial Updated:
08/14/2025
Locations: UCLA Neurology Outpatient Clinic at Westwood, Los Angeles, California
Conditions: Friedreich Ataxia
A Study to Assess the Long-term Safety of KarXT for the Treatment of Manic Episodes in Bipolar-I Disorder (BALSAM-3)
Recruiting
This is a phase 3, open-label extension study to assess the long-term safety of KarXT for the treatment of mania or mania with mixed features in Bipolar-I disorder (BP-I) The primary objective of the study is to evaluate the long-term safety and tolerability of KarXT in the treatment of participants with mania or mania with mixed features associated with BP-I.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
08/14/2025
Locations: Local Institution - 0027, Anaheim, California
Conditions: Bipolar Disorder Type I With Mania
A Study to Assess the Pharmacokinetics and Safety of Bimekizumab in Children and Adolescents With Moderate to Severe Hidradenitis Suppurativa
Recruiting
The purpose of the study is to assess the PK of bimekizumab following subcutaneous (sc) administration in study participants with moderate to severe hidradenitis suppurativa (HS)
Gender:
ALL
Ages:
Between 9 years and 17 years
Trial Updated:
08/14/2025
Locations: Hs0006 50708, Roseville, California
Conditions: Hidradenitis Suppurativa
BID WM Digital Intervention in Aging
Recruiting
The goal of this clinical trial is to learn if engaging with an digital intervention may improve cognitive function. The main questions it aims to answer are: 1. Does engagement in with a digital intervention improve working memory? 2. Does engagement in with a digital intervention improve inhibitory control? Researchers will compare two different digital interventions to assess whether they may be helpful in improving cognitive function. Participants will conduct study activities remotely (e... Read More
Gender:
ALL
Ages:
Between 60 years and 85 years
Trial Updated:
08/14/2025
Locations: University of California, San Francisco, San Francisco, California
Conditions: Working Memory, Inhibitory Control
A Dose Randomization Study of Bulumtatug Fuvedotin in TNBC Patients Previously Treated With ADCs
Recruiting
The goal of this clinical trial is to investigate if treatment with bulumtatug fuvedotin is effective in triple-negative breast cancer patients who have previously received treatment with an antibody-drug conjugates.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: City of Hope, Duarte, California
Conditions: Triple Negative Breast Cancer
A Clinical Study of Zilovertamab Vedotin (MK-2140) Plus Rituximab Plus Cyclophosphamide, Doxorubicin, and Prednisone (R-CHP) Versus Polatuzumab Vedotin Plus R-CHP in People With Diffuse Large B-cell Lymphoma (DLBCL) (MK-2140-011/waveLINE-011)
Recruiting
Researchers are looking for ways to treat germinal center B-cell-like diffuse large B-cell lymphoma (GCB DLBCL). DLBCL is a fast-growing blood cancer that affects B-cells. GCB is a type of DLBCL that affects young B-cells that are still maturing. The goal of this study is to learn if more people who receive zilovertamab vedotin (MK-2140) and R-CHP have the cancer respond (go away) than those who receive polatuzumab vedotin and R-CHP.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Bass Medical Group ( Site 0123), Walnut Creek, California
Conditions: Lymphoma, Large B-Cell, Diffuse
Pharmacokinetics, Pharmacodynamics, Safety and Tolerability of a New Maintenance Dosing Regimen of Ofatumumab
Recruiting
This study will evaluate the pharmacokinetics, pharmacodynamics, safety and tolerability of a new dosage of ofatumumab compared to the approved dosage of ofatumumab followed by extended treatment in participants with relapsing multiple sclerosis.
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
08/14/2025
Locations: The Research and Education Inst. of Alta Bates Summit Med. Grp, Berkeley, California
Conditions: Relapsing Multiple Sclerosis (RMS)
Testing the Addition of an Anti-Cancer Drug, Triapine, to the Usual Radiation Therapy for Recurrent Glioblastoma or Astrocytoma
Recruiting
This phase I trial tests the safety, side effects, and best dose of triapine in combination with radiation therapy in treating patients with glioblastoma or astrocytoma that has come back after a period of improvement (recurrent). Triapine may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Giving triapine in combination with radiation therapy... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: UCI Health - Chao Family Comprehensive Cancer Center and Ambulatory Care, Irvine, California
Conditions: Astrocytoma, IDH-Mutant, Grade 2, Recurrent Astrocytoma, IDH-Mutant, Recurrent Astrocytoma, IDH-Mutant, Grade 3, Recurrent Astrocytoma, IDH-Mutant, Grade 4, Recurrent Diffuse Midline Glioma, Recurrent Glioblastoma, IDH-Wildtype
A Study to Evaluate the Efficacy and Safety of DNTH103 in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)
Recruiting
The purpose of this Phase 3 study is to demonstrate the efficacy of DNTH103 as compared to placebo in participants with chronic inflammatory demyelinating polyneuropathy (CIDP).
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/14/2025
Locations: Clinical Study Site, San Francisco, California
Conditions: Chronic Inflammatory Demyelinating Polyneuropathy
Efficacy and Safety Study of Ixoberogene Soroparvovec (Ixo-vec) in Participants With Neovascular Age-Related Macular Degeneration
Recruiting
This is a multi-center, randomized, double-masked, active-comparator-controlled, Phase 3 study in a broad participant population (treatment-naïve and treatment-experienced) with neovascular (wet) age-related macular degeneration (nAMD). The study will evaluate a single intravitreal (IVT) injection of Ixo-vec compared to an active comparator. The primary endpoint of this study is the mean change in best corrected visual acuity (BCVA) of Ixo-vec compared to an active comparator measured at an aver... Read More
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/14/2025
Locations: Adverum Clinical Site 109, Bakersfield, California
Conditions: Neovascular Age-Related Macular Degeneration (nAMD), Wet AMD
STimulation to Activate RespIration
Recruiting
Multi-center, randomized, controlled, open-label Phase 2 feasibility trial. Subjects on mechanical ventilation (MV) for acute hypoxemic respiratory failure (AHRF) with lung injury (including subjects who meet criteria for acute respiratory distress syndrome (ARDS)) will be randomized 2:1 to diaphragm neurostimulation-assisted ventilation (DNAV) using the AeroNova System plus lung-protective ventilation (Treatment) vs. lung-protective ventilation alone (Control).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: University of California San Diego, La Jolla, California
Conditions: ARDS (Moderate or Severe), AHRF, Mechanically Ventilated ICU Patients
Extension Study of Sotatercept in People With Pulmonary Hypertension (MK-7962-023)
Recruiting
Researchers are looking for new ways to treat people with a type of pulmonary hypertension called combined postcapillary and precapillary pulmonary hypertension (Cpc-PH). This study focuses on Cpc-PH that is caused by heart failure with preserved ejection fraction (HFpEF). Researchers want to know if the study treatment, sotatercept, can treat people with Cpc-PH caused by HFpEF. This is an extension study, which means people who took part in a certain study on sotatercept for Cpc-PH (called a p... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Jeffrey S. Sager, MD Medical Corporation ( Site 1060), Santa Barbara, California
Conditions: Hypertension, Pulmonary