California is currently home to 5609 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 Islatravir (ISL) and Ulonivirine (ULO) Once Weekly (QW) in Virologically Suppressed Adults With Human Immunodeficiency Virus Type 1 (HIV-1) (MK-8591B-060)
Recruiting
Investigators are trying to find better treatments for people with HIV-1. In this clinical study, investigators want to see how well a new treatment called ISL+ULO, taken once a week, works compared to an existing treatment called BIC/FTC/TAF, which is taken every day. Investigators will check how many people still have a high level of the virus in their blood after 24 weeks. The investigators also want to understand if the new treatment, MK-8591B, is safe and how well people can handle it.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: Zuckerberg San Francisco General Hospital and Trauma Center ( Site 4107), San Francisco, California
Conditions: Human Immunodeficiency Virus Type 1 (HIV-1) Infection
Efficacy and Safety of Maridebart Cafraglutide in Adult Participants With Type 2 Diabetes Mellitus Who Have Obesity or Are Overweight
Recruiting
The primary objective of this study is to demonstrate that maridebart cafraglutide is superior to placebo for percent change in body weight.
Gender:
ALL
Ages:
Between 18 years and 99 years
Trial Updated:
05/07/2025
Locations: San Fernando Valley Health Institute, Canoga Park, California
Conditions: Type 2 Diabetes Mellitus (T2DM), Obesity, Overweight
Evaluation of Maridebart Cafraglutide in Adult Participants Without Type 2 Diabetes Mellitus Who Have Obesity or Are Overweight
Recruiting
The primary objective of this study is to demonstrate that maridebart cafraglutide is superior to placebo for percent change in body weight.
Gender:
ALL
Ages:
Between 18 years and 99 years
Trial Updated:
05/07/2025
Locations: Ark Clinical Research- Tustin, Fountain Valley, California
Conditions: Obesity
Polycystic Kidney Disease 1 (PKD1) Gene Variant Groups in Autosomal Dominant Polycystic Kidney Disease
Recruiting
The purpose of this study is to estimate the prevalence, demographic, and clinical characteristics of PKD1/2 gene variant groups in the ADPKD population.
Gender:
ALL
Ages:
Between 12 years and 65 years
Trial Updated:
05/07/2025
Locations: Kaiser Permanente - Los Angeles Medical Center, Los Angeles, California
Conditions: Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Comparison Between ABP 692 and Ocrevus® (Ocrelizumab)
Recruiting
The main objectives of the study are to demonstrate pharmacokinetics (PK) similarity between ABP 692 and Ocrelizumab (US), and ABP 692 and Ocrelizumab (EU), and to demonstrate pharmacodynamics (PD) similarity between ABP 692 and Ocrelizumab reference product (RP) based on assessment of the suppression of new active brain lesions over 24 weeks as assessed by magnetic brain imaging (MRI).
Gender:
ALL
Ages:
Between 18 years and 60 years
Trial Updated:
05/07/2025
Locations: Profound Research - Neurology Center of Southern California, Carlsbad, California
Conditions: Relapsing-remitting Multiple Sclerosis (RRMS)
Phase 3 Study of Xaluritamig vs Cabazitaxel or Second Androgen Receptor-Directed Therapy in Participants With Progressive Metastatic Castration-Resistant Prostate Cancer
Recruiting
The main objective of the study is to compare overall survival in participants receiving xaluritamig versus investigator's choice (cabazitaxel or second androgen receptor-directed therapy \[ARDT\]).
Gender:
MALE
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: City of Hope National Medical Center, Duarte, California
Conditions: Metastatic Castration-resistant Prostate Cancer
STEP TEENS Weight Maintenance: A Research Study on How Well Semaglutide Helps Teenagers With Excess Body Weight to Lose Weight and Maintain Weight Loss
Recruiting
The study is testing how well semaglutide can help adolescents with excess body weight to lose weight and to maintain weight loss. All participants in the study will receive semaglutide as a weekly injection. The study medicine is injected with a thin needle in the stomach, thighs or upper arms. All participants will get semaglutide treatment for a minimum of 3 years.
Gender:
ALL
Ages:
Between 12 years and 15 years
Trial Updated:
05/07/2025
Locations: Neighborhood Healthcare, Escondido, California
Conditions: Obesity
Evaluation of Efficacy of Povetacicept in Adults With Immunoglobulin A Nephropathy (IgAN)
Recruiting
The purpose of this study is to evaluate the efficacy of povetacicept in adult participants compared with placebo in reducing proteinuria and preserving renal function.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: West Coast Kidney, Fremont, California
Conditions: Immunoglobulin A Nephropathy
Observational Study of Oral Atogepant to Evaluate Real-World Effectiveness in Adult Participants With Migraine
Recruiting
Migraine is a neurological disease characterized by moderate or severe headache, associated with nausea, vomiting, and/or sensitivity to light and sound. This study will evaluate the effectiveness of atogepant in treating adult participants with migraine in a real-world setting. Atogepant is an approved drug for preventive treatment of migraine in adults. Approximately 1000 adult participants who are prescribed atogepant by their doctors will be enrolled in this study across the world. Partici... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: Kenneth Martinez MD, A Medical Corp /ID# 267834, Aliso Viejo, California
Conditions: Migraine
A Phase 3, Placebo-controlled, Double-blind Study Assessing Rocatinlimab in Prurigo Nodularis
Recruiting
The main objective of the study will be to evaluate the efficacy of rocatinlimab compared with placebo at week 24 on the patient-reported outcome (PRO) measure of pruritus and overall clinical assessment score (US only).
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
05/07/2025
Locations: First OC Dermatology, Fountain Valley, California
Conditions: Prurigo Nodularis
Pembrolizumab Plus CA-4948 for the Treatment of Patients With Progressive Metastatic Urothelial Cancer Despite Prior Immunotherapy
Recruiting
This phase I trial tests the safety, side effects, best dose, and effectiveness of emavusertib (CA-4948) in combination with pembrolizumab in treating patients with urothelial cancer that has spread from where it first started to other places in the body (metastatic) and that has a resistance to PD-1/PD-L1 immune checkpoint inhibitors. CA-4948, a kinase inhibitor, may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies,... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: UC Irvine Health/Chao Family Comprehensive Cancer Center, Orange, California
Conditions: Metastatic Urothelial Carcinoma, Unresectable Urothelial Carcinoma
A Study to Investigate the Safety and Effectiveness of a Coagulation Factor IX Gene Insertion Therapy (REGV131-LNP1265) in Pediatric, Adolescent and Adult Participants With Hemophilia B
Recruiting
Participants in this study have a genetic mutation, specifically in the coagulation (blood clotting) Factor 9 gene that causes severe or moderately severe hemophilia B. This study is researching an experimental gene insertion therapy (the adding of a gene into your DNA) called REGV131-LNP1265, also called the "study drug". Gene insertion therapy aims to teach the body how to produce clotting factor long-term, without the need for factor replacement therapy. The main aim of this study is to find... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
05/07/2025
Locations: Orthopaedic Hemophilia Treatment Center, Los Angeles, California
Conditions: Hemophilia B