California is currently home to 5612 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 of LY4257496 in Participants With Cancer (OMNIRAY)
Recruiting
The main purpose of this study is to evaluate safety, tolerability, and efficacy of LY4257496 alone and as part of relevant standard of care (SOC) combination therapy in participants with Gastrin-releasing Peptide Receptor (GRPR)-positive advanced breast, colorectal, prostate, and endometrial cancer. This is a 2-part study. Participation could last up to 36 weeks or until your tumor progresses.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: University of California, Los Angeles (UCLA), Los Angeles, California
Conditions: Breast Neoplasms, Colorectal Neoplasms, Prostate Neoplasm, Endometrial Neoplasms, Neoplasm Metastasis
A Study of GC012F (AZD0120), a CAR T Therapy Targeting CD19 and BCMA in Early-Line Treatment in Subjects With Multiple Myeloma
Recruiting
This trial is a phase 1, open-label, multicenter study of GC012F (AZD0120), a CD19/BCMA dual CAR T-cell therapy, in early-line treatment in subjects with Multiple Myeloma.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: Research Site, Duarte, California
Conditions: Newly Diagnosed Multiple Myeloma, Relapsed Refractory Multiple Myeloma
A Phase 3 Study to Evaluate the Safety and Efficacy of KarXT + KarX-EC for the Treatment of Agitation Associated With Alzheimer's Disease (ADAGIO-2)
Recruiting
The purpose of this study is to evaluate the efficacy and safety of KarXT + KarX-EC in adult participants with agitation related to Alzheimer's Disease.
Gender:
ALL
Ages:
Between 55 years and 90 years
Trial Updated:
08/20/2025
Locations: Local Institution - 2625, Long Beach, California
Conditions: Alzheimer Disease
Study of GS-3242 in Participants With HIV-1
Recruiting
This study is part of a master study. The goal of master protocol (GS-US-544-5905, NCT05585307) is to learn how novel antiretrovirals (medicines that stop the virus from multiplying) affect the human immunodeficiency virus-1 (HIV-1) infection in people living with HIV (PWH). Substudy GS-US-544-5905-05 is to learn more about the study drug GS-3242 in PWH.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
08/20/2025
Locations: Ruane Clinical Research Group, Inc, Los Angeles, California
Conditions: HIV-1-infection
Optimizing Proton Pump Inhibitors (PPI) Prescribing With EHR-Based Decision Support
Recruiting
The proposed study is a quality improvement initiative designed to rigorously evaluate new variations of UCLA Health's proton pump inhibitor (PPI) order panels, building on internal quality improvement efforts to optimize prescribing workflows within the Electronic Health Record (EHR). PPIs are notoriously overprescribed, and the study team has identified that the CareConnect default prescription setting of 90 days with three refills (360 pill days) exceed standard guidelines (in most cases, 60... Read More
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/20/2025
Locations: UCLA Health System, Los Angeles, California
Conditions: Prescribing Patterns, Physician, Physician's Practice Patterns, Drug Utilization Review
A Study of Breast Cancer Risk Factors and Outcomes of People in Florida
Recruiting
The purpose of this study is to understand why different people have different risks and outcomes for breast cancer and non-breast cancer.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: University of California, Los Angeles (Specimen Analysis only), Los Angeles, California
Conditions: Breast Cancer, Breast Neoplasms, Breast Diseases
A Study to Test Different Doses of BI 1584862 in People With a Distinct Form of Age-related Macular Degeneration (AMD) Called Geographic Atrophy
Recruiting
This study is open to adults aged 50 years and older with geographic atrophy that was diagnosed by imaging of the retina. The purpose of this study is to find out whether a medicine called BI 1584862 improves the eyes in people with geographic atrophy and to find the most suitable dose. This study has 4 treatment groups. Participants are put into groups randomly, which means by chance. Initially participants can join a BI 1584862 and a placebo group; then more participants are put randomly in 2... Read More
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/20/2025
Locations: Retina-Vitreous Associates Medical Group, Beverly Hills, California
Conditions: Geographic Atrophy
Study of a 4-Dose Regimen of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From Approximately 2 Months of Age
Recruiting
This study is a Phase 3, randomized, modified double-blind study which aims to measure whether PCV21 vaccine (investigational pneumococcal conjugate vaccine) is safe and can help the body to develop germ-fighting agents called "antibodies" (immunogenicity) compared with 20-valent pneumococcal vaccine (Prevnar 20, licensed pneumococcal conjugate vaccine) when they are administered with routine pediatric vaccines in infants aged from approximately 2 months (42 to 89 days). The study duration per... Read More
Gender:
ALL
Ages:
Between 42 days and 89 days
Trial Updated:
08/20/2025
Locations: Century Research Institute- Site Number : 8400065, Huntington Park, California
Conditions: Pneumococcal Immunization
A Trial of Felzartamab in Kidney Transplant Recipients With Late Antibody-Mediated Rejection (AMR)
Recruiting
The main goal of this trial is to evaluate the efficacy of felzartamab compared to placebo in kidney transplant recipients diagnosed with late active or chronic active AMR.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/20/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Antibody-mediated Rejection
LIVERAGEā„¢: A Study to Test Whether Survodutide Helps People With a Liver Disease Called NASH/MASH Who Have Moderate or Advanced Liver Fibrosis
Recruiting
This study is open to adults who are at least 18 years old living with obesity and have: * a confirmed liver disease called non-alcoholic steatohepatitis (NASH)/metabolic associated steatohepatitis (MASH) and * moderate or advanced liver fibrosis People with a history of acute or chronic liver diseases other than MASH or chronic alcohol intake cannot take part in this study. The purpose of this study is to find out whether a medicine called survodutide helps people with MASH and moderate or ad... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: Clinnova Research Solutions, Anaheim, California
Conditions: Metabolic Dysfunction Associated Steatohepatitis (MASH), Liver Fibrosis
A Study to Test Whether Spesolimab Helps People With a Skin Condition Called Pyoderma Gangrenosum
Recruiting
The purpose of this study is to find out whether a medicine called spesolimab helps people with pyoderma gangrenosum (PG). The main aim is to see whether spesolimab leads to closure of PG ulcers. This study is open to adults with ulcerative PG with at least 1 ulcer that measures between 5 cm\^2 to 80 cm\^2 in size. This study has 2 parts. In Part 1, participants are put into groups randomly, which means by chance. 1 group gets spesolimab and the other group gets placebo. Placebo injections look... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: University of California Irvine, Irvine, California
Conditions: Pyoderma Gangrenosum
Testing the Addition of an Immunotherapy Drug, Cemiplimab (REGN2810), Plus Surgery to the Usual Surgery Alone for Treating Advanced Skin Cancer
Recruiting
This phase III trial compares the effect of adding cemiplimab to standard therapy (surgery with or without radiation) versus standard therapy alone in treating patients with stage III/IV squamous cell skin cancer that is able to be removed by surgery (resectable) and that may have come back after a period of improvement (recurrent). The usual treatment for patients with resectable squamous cell skin cancer is the removal of the cancerous tissue (surgery) with or without radiation, which uses hig... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: Tower Cancer Research Foundation, Beverly Hills, California
Conditions: Recurrent Skin Squamous Cell Carcinoma, Resectable Skin Squamous Cell Carcinoma, Recurrent Head and Neck Cutaneous Squamous Cell Carcinoma, Resectable Head and Neck Cutaneous Squamous Cell Carcinoma, Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8