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.
Precision-Based Genomics in Prostate Cancer
Recruiting
Background: Prostate cancer is the most common cancer and the second leading cause of death in males in the United States. Researchers want to find additional gene mutations that may increase a man s risk for prostate cancer and may affect how aggressive the disease is. Objective: To look at gene mutations in men with prostate cancer as well as the course of their disease to better understand how gene mutations relate to the way the cancer progresses and responds to treatment. Eligibility:... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
08/13/2025
Locations: University of California San Diego, La Jolla, California
Conditions: Prostate Cancer
Drug-Eluting Registry: Real-World Treatment of Lesions in the Peripheral Vasculature
Recruiting
The ELEGANCE Registry's objective is to collect Real-World Data (RWD), including populations previously not represented in Peripheral Vascular Disease (PVD) trials, health economics data, and to support the safe use of commercially available Boston Scientific Corporation (BSC) drug-eluting devices for the treatment of lesions located in the peripheral vasculature.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/13/2025
Locations: PIH Health Good Samaritan Hospital, Los Angeles, California
Conditions: Peripheral Vascular Diseases
Randomized Study in Children and Adolescents With Migraine: Acute Treatment
Recruiting
The purpose of this study is to test the safety and efficacy of BHV-3000 versus placebo in the acute treatment of moderate or severe migraine in children and adolescents.
Gender:
ALL
Ages:
Between 6 years and 17 years
Trial Updated:
08/13/2025
Locations: Advanced Research Center, Inc., Anaheim, California
Conditions: Pediatric Migraine
Phase 1/2a Clinical Trial of PR001 (LY3884961) in Patients With Parkinson's Disease With at Least One GBA1 Mutation (PROPEL)
Recruiting
Study J3Z-MC-OJAA is a Phase 1/2a, multicenter, open-label, ascending dose, first in-human study that will evaluate the safety of intracisternal LY3884961 administration in patients with moderate to severe Parkinson's disease with at least 1 pathogenic GBA1 mutation. Two dose level cohorts of LY3884961 are planned (Dose Level 1 and Dose Level 2). The duration of the study is 5 years. During the first year, patients will be evaluated for the effect of LY3884961 on safety, tolerability, immunogeni... Read More
Gender:
ALL
Ages:
Between 35 years and 80 years
Trial Updated:
08/13/2025
Locations: Esperanza Clinical, 25220 Hancock Avenue, Murrieta, California
Conditions: Parkinson Disease
A Study to Evaluate Efficacy, Safety & Pharmacokinetics of the Port Delivery System (PDS) With Ranibizumab in Participants With Diabetic Macular Edema (DME) Compared With Intravitreal Ranibizumab; A Subtudy to Evaluate the Safety of Re-Implanting the PDS With Ranibizumab in Participants With DME
Recruiting
This study will evaluate the efficacy, safety, and pharmacokinetics of the PDS with Ranibizumab in participants with DME when treated every 24 weeks (Q24W) compared with intravitreal ranibizumab 0.5 mg every 4 weeks (Q4W). The substudy will evaluate safety of re-implanting the updated PDS with ranibizumab and the refill-exchange procedures following re-implantation in participants with DME who were previously enrolled in the main Study, GR40550. Up to 100 participants from the main study will b... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/13/2025
Locations: California Retina Consultants, Bakersfield, California
Conditions: Diabetic Macular Edema
Study of Romiplostim for Chemotherapy-induced Thrombocytopenia in Adult Subjects With Non-small Cell Lung Cancer (NSCLC), Ovarian Cancer, or Breast Cancer
Recruiting
To evaluate the efficacy of romiplostim for the treatment of CIT in patients receiving chemotherapy for the treatment of NSCLC, ovarian cancer, or breast cancer measured by the ability to administer on-time, full-dose chemotherapy
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
08/13/2025
Locations: Los Angeles Cancer Network, Anaheim, California
Conditions: Chemotherapy-induced Thrombocytopenia
Panitumumab-IRDye800 in Detecting Cancer in Participants With Lung Cancer During Surgery
Recruiting
This phase I/II trial studies the best dose and timing of panitumumab-IRDye800 in detecting cancer in participants with lung cancer during the surgery. Panitumumab-IRDye800 is a combination of the antibody drug panitumumab and IRDye800CW, an investigational dye that can be seen using a special camera. Panitumumab-IRDye800 may attach to tumor cells and make them more visible during surgery in patients with lung cancer.
Gender:
ALL
Ages:
19 years and above
Trial Updated:
08/13/2025
Locations: Stanford University, School of Medicine, Palo Alto, California
Conditions: Lung Carcinoma, Metastatic Malignant Neoplasm in the Lung, Stage IV Lung Cancer AJCC v8, Stage IVA Lung Cancer AJCC v8, Stage IVB Lung Cancer AJCC v8
MILDĀ® Percutaneous Image-Guided Lumbar Decompression: A Medicare Claims Study
Recruiting
This prospective longitudinal study will compare incidence rates of Medicare beneficiary surgical and minimally invasive intervention post index procedure, as well as harms associated with the MILD procedure, at 24 months post-treatment with MILD, tested against a control group of similar patients that have had a comparable procedure. This study will start with patients treated with a study procedure having an index date on or after January 1, 2017, and enrollment will continue until stopped by... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/13/2025
Locations: Pacific Ambulatory Surgery Center, Alhambra, California
Conditions: Lumbar Spinal Stenosis
Clinical and Molecular Studies in Families With Inherited Eye Disease
Recruiting
Background: Genes are the basic units of heredity. When genes are changed, certain cells don t work like they should. Researchers want to try to better understand the genetic conditions that are linked with inherited eye diseases. Objective: To try to identify the genes linked to the development of inherited eye diseases. Eligibility: People ages 4 and older who have or have a family member with an inherited eye disease Design: Participants will be screened with medical history and medica... Read More
Gender:
ALL
Ages:
Between 4 years and 120 years
Trial Updated:
08/13/2025
Locations: University of California, San Diego, La Jolla, California
Conditions: Inherited Eye Disease
Collection of Tissue Samples for Cancer Research
Recruiting
Background: -Patients who are being evaluated and/or treated at the NIH Clinical Center and adult patients at participating sites will be entered onto this tissue procurement protocol for collection of tissue specimens. Objectives: * To obtain samples from adult and pediatric patients for research purposes from tests and procedures that are done as required by the primary research protocol(s) to which a patient is enrolled or as part of their standard-of-care treatment. * To obtain samples fo... Read More
Gender:
ALL
Ages:
2 months and above
Trial Updated:
08/13/2025
Locations: UC Davis, Sacramento, California
Conditions: Neoplasms, Lymphomas, Multiple Myeloma, Myelodysplastic Syndrome
Machine Learning Prediction of Possible Central Line Associated Blood Stream Infections and Rate of Reduction
Recruiting
Prospective, multi-center, cluster-randomized trial of a hospital Infection Preventionist (IP)-led quality improvement study to provide clinical teams with just-in-time clinical education and reinforcement of existing best practices recommendations based on the output of a possible Central Line Associated Blood Stream Infection (CLABSI) Machine Learning (ML) prediction model. The objective is to determine whether providing this model to Infection Preventionists will decrease the CLABSI rates ve... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/12/2025
Locations: St. Mary Medical Center, Apple Valley, California
Conditions: Central Line Associated Blood Stream Infections (CLABSI)
Temporal Investigation of Multimodal Elements
Recruiting
The TIME Study is a research project aiming to understand the body's natural rhythms. The goal is to see how daily and weekly changes in our bodies-from what's happening at a molecular level to data from wearable devices-are connected. What is the study about? This study is trying to create a detailed map of how a person's body changes over time. By looking at information from blood, urine, and other samples, as well as data from smartwatches and other devices, researchers want to learn how our... Read More
Gender:
ALL
Ages:
55 years and above
Trial Updated:
08/12/2025
Locations: Buck Institute, Novato, California
Conditions: Health