Clinical Trials in California
1,246 recruiting clinical trials across 15 cities in California (CA). Eligibility criteria explained in plain English.
Recruiting Trials in California
Clinical trial data sourced from ClinicalTrials.gov. Always consult your doctor before considering any clinical trial.
Fabry Disease Registry & Pregnancy Sub-registry
The Fabry Registry is an ongoing, international multi-center, strictly observational program that tracks the routine clinical outcomes for patients with Fabry disease,...
Diagnostic Innovations in Glaucoma Study
The overarching goal of our research study is to evaluate changes in visual function and optic nerve topography (the structure of the back of the eye) in patients with glaucoma...
Pompe Disease Registry Protocol
The Pompe Registry is a global, multicenter, international, longitudinal, observational, and voluntary program for patients with Pompe disease, designed to track the disease's...
Retinal Imaging in Patients With Inherited Retinal Degenerations
The purpose of this study is to determine whether the structure and function of the human retina can be studied with high resolution in patients with inherited retinal...
Longitudinal Study for Eosinophilic Granulomatosis With Polyangiitis
Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare immune system disorder that causes asthma, an excessive number of eosinophils (a type of white blood cell) in the...
International Collaborative Gaucher Group (ICGG) Gaucher Disease Registry & Pregnancy Sub-registry
The ICGG Gaucher Registry is an ongoing, international multi-center, strictly observational program that tracks the routine clinical outcomes for patients with Gaucher disease,...
Identification of Secreted Markers for Tumor Hypoxia in Patients With Head and Neck or Lung Cancers
The purpose of this study is to identify and confirm new blood and tissue markers for prognosis and tumor hypoxia. Tumor hypoxia, or the condition of low oxygen in the tumor, has...
Drug-Induced Sleep Endoscopy for Upper Airway Evaluation in Obstructive Sleep Apnea
Prospective, interventional cohort study of drug-induced sleep endoscopy (DISE) to evaluate the upper airway in a cohort of obstructive sleep apnea (OSA) surgical patients. This...
Prostate Active Surveillance Study
The Prostate Active Surveillance Study (PASS) is a research study for men who have chosen active surveillance as a management plan for their prostate cancer. Active surveillance...
BrainGate2: Feasibility Study of an Intracortical Neural Interface System for Persons With Tetraplegia
The purpose of this study is to obtain preliminary device safety information and demonstrate proof of principle (feasibility) of the ability of people with tetraplegia to control...
Clinical & Pathological Studies of Upper Gastrointestinal Carcinoma
Our research of the biology of upper gastrointestinal cancers involves the study of tissue samples and cells from biopsies of persons with gastric or esophageal cancer or blood...
The Use of Lymph Node Biopsies to Support HIV Pathogenesis Studies
HIV medicines have led to dramatic improvements in health. However, there remains a concern for potential drug toxicities, cost of drugs, and need for life-long treatment. In...
Nephrotic Syndrome Study Network
Minimal change disease (MCD), focal segmental glomerulosclerosis (FSGS), and Membranous nephropathy (MN), generate an enormous individual and societal financial burden, accounting...
One-Time DNA Study for Vasculitis
The purpose of this study is to identify genes that increase the risk of developing vasculitis, a group of severe diseases that feature inflammation of blood vessels. Results of...
Congenital Muscle Disease Study of Patient and Family Reported Medical Information
The Congenital Muscle Disease Patient and Proxy Reported Outcome Study (CMDPROS) is a longitudinal 10 year study to identify and trend care parameters, adverse events in the...
Product Surveillance Registry
The purpose of the Registry is to provide continuing evaluation and periodic reporting of safety and effectiveness of Medtronic market-released products. The Registry data is...
Enroll -HD: A Prospective Registry Study in a Global Huntington's Disease Cohort
Enroll-HD is a longitudinal, observational, multinational study that integrates two former Huntington's disease (HD) registries-REGISTRY in Europe, and COHORT in North America and...
Proton Therapy for Esophageal Cancer
The goal of this phase II study is to investigate the feasibility, toxicity and efficacy of a regimen incorporating a proven systemic regimen, carboplatin /paclitaxel, with...
North American Mitochondrial Disease Consortium Patient Registry and Biorepository (NAMDC)
The North American Mitochondrial Disease Consortium (NAMDC) maintains a patient contact registry and tissue biorepository for patients with mitochondrial disorders.
A Long-term Extension Study of PCI-32765 (Ibrutinib)
The purpose of this study is to collect long-term safety and efficacy data for participants treated with ibrutinib and to provide ongoing access to ibrutinib for participants who...
Child to Adult Neurodevelopment in Gene Expanded Huntington's Disease
Huntington's Disease (HD) is an autosomal dominant disease manifested in a triad of cognitive, psychiatric, and motor signs and symptoms. HD is caused by a triplet repeat...
Idiopathic Pulmonary Fibrosis and Interstitial Lung Disease Prospective Outcomes Registry
The Idiopathic Pulmonary Fibrosis Prospective Outcomes (IPF-PRO) Registry started recruiting in 2014 with the objective of studying Idiopathic Pulmonary Fibrosis. In 2018, the...
Metabolic Responses to Bariatric Surgery
Research the genetic and biomechanical markers of human adipose tissue on patients with morbid obesity. Additional tissue/fluid collection is also gathered during the time of...
Stelara and Tremfya Pregnancy Exposure Registry OTIS Autoimmune Diseases in Pregnancy Project
The purpose of the OTIS Autoimmune Diseases in Pregnancy Study is to monitor planned and unplanned pregnancies exposed to certain medications, to evaluate the possible teratogenic...
LOWER: Lomitapide Observational Worldwide Evaluation Registry
This global product exposure registry is a multicentre, long-term, prospective, observational cohort study (exposure registry), designed to evaluate the long term safety and...
Very Early Intensive Treatment of Infants Living With HIV to Achieve HIV Remission
The study will explore the effects of early intensive antiretroviral therapy (ART) with or without a broadly neutralizing antibody (bNAb) on achieving HIV remission (HIV RNA below...
LCH-IV, International Collaborative Treatment Protocol for Children and Adolescents With Langerhans Cell Histiocytosis
The LCH-IV is an international, multicenter, prospective clinical study for pediatric Langerhans Cell Histiocytosis LCH (age \< 18 years).
Selinexor and Backbone Treatments of Multiple Myeloma Patients
This study will independently assess the efficacy and safety of 11 combination therapies in 12 arms, in dose-escalation/-evaluation and expansion phases, for the treatment of...
Project: Every Child for Younger Patients With Cancer
This study gathers health information for the Project: Every Child for younger patients with cancer. Gathering health information over time from younger patients with cancer may...
Magnetic Apnea Prevention(MAGNAP) Device to Treat Obstructive Sleep Apnea:First-In-Human Study of Feasibility and Safety
The purpose of this study is to determine the safety and feasibility of the Magnap magnetic device in the treatment of obstructive sleep apnea (OSA).
Showing 30 of 1,246 trials in California. Search all trials
Browse Trials by State
Frequently Asked Questions
There are currently 1,246 clinical trials actively recruiting participants in California. These span all phases from early-stage Phase 1 to late-stage Phase 3 trials, across 20+ conditions.
The top conditions with recruiting trials in California include Schizophrenia, Ulcerative Colitis, Pancreatic Cancer, Autism Spectrum Disorder, Multiple Sclerosis. Each has multiple active trials across research centers in the state.
Major trial sites in California include Los Angeles, San Francisco, San Diego, Orange, Sacramento. Most large academic medical centers and research hospitals serve as trial sites.
Review the trial listings on this page and check the eligibility criteria — we translate them into plain English. When you find a trial that fits, talk to your doctor about whether it's right for you, then contact the trial team directly using the information on the trial page.
Trial data sourced from the ClinicalTrials.gov API. Location data reflects registered trial sites. This site does not provide medical advice.