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California Paid Clinical Trials
A listing of 5617 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
193 - 204 of 5617
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California is currently home to 5617 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.
Featured Trial
Paid Clinical Studies Nationwide
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Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
A Phase 2 Study to Evaluate MORF-057 in Adults With Moderately to Severely Active Crohn's Disease
Recruiting
This is a Phase 2, randomized, double-blind, placebo-controlled, multicenter study to evaluate the efficacy and safety of 2 active dose regimens of MORF-057 in adult study participants with moderately to severely active Crohn's disease (CD).
Gender:
ALL
Ages:
Between 18 years and 85 years
Trial Updated:
07/29/2025
Locations: Gastro Care Institute, Lancaster, California
Conditions: Inflammatory Bowel Diseases, Crohn's Disease
A Study Evaluating Efruxifermin in Subjects With Non-Cirrhotic Nonalcoholic Steatohepatitis (NASH)/Metabolic Dysfunction-Associated Steatohepatitis (MASH) and Fibrosis
Recruiting
This is a multi-center evaluation of efruxifermin (EFX) in a randomized, double-blind, placebo-controlled study in subjects with non-cirrhotic NASH/MASH and fibrosis stage 2 or 3 (F2 or F3).
The study will enroll subjects in two cohorts for a total samples size of 1650 subjects.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/29/2025
Locations: Akero Clinical Study Site, Chula Vista, California
Conditions: NASH With Fibrosis, MASH With Fibrosis
Type I Hybrid Effectiveness-Implementation Trial of Primary Care Brief Mindfulness Training for Veterans
Recruiting
The VA wants to understand what type of integrative and whole health approaches are helpful for Veterans. The study is comparing two primary care based mental health treatments, a mindfulness class that teaches mindfulness meditation and a problem-solving class that teaches problem-solving skills and how to build resilience, for Veterans who are experiencing symptoms of anxiety, depression, and/or PTSD. The goal of the study is to understand if the classes reduce symptoms of anxiety, depression,... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: VA San Diego Healthcare System, San Diego, CA, San Diego, California
Study Assessing Activity of Intravenous (IV) Etentamig Monotherapy Versus Standard Available Therapies in Adult Participants With Relapsed or Refractory Multiple Myeloma
Recruiting
Multiple myeloma (MM) is a cancer of the blood's plasma cells. The cancer is typically found in the bones and bone marrow (the spongy tissue inside of the bones) and can cause bone pain, fractures, infections, weaker bones, and kidney failure. Treatments are available, but MM can come back (relapsed) or may not get better (refractory) with treatment. This is a study to determine change in disease symptoms of etentamig compared to standard available therapies in adult participants with relapsed/r... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Alta Bates Summit Medical Center for Research /ID# 261438, Berkeley, California
Conditions: Multiple Myeloma
A Trial to Learn if Odronextamab Combined With Lenalidomide is Safe and Works Better Than Rituximab Combined With Lenalidomide in Adult Participants With Follicular Lymphoma and Marginal Zone Lymphoma
Recruiting
This study is researching an experimental drug called odronextamab (referred to as study drug), in combination with lenalidomide. The study is focused on participants who have one of two types of cancer: follicular lymphoma (FL) or marginal zone lymphoma (MZL) that has come back after treatment (called "relapsed"), or did not respond to treatment (called "refractory"). FL and MZL are subtypes of Non-Hodgkin 's lymphoma (NHL).
This study will be made up of two parts (Part 1 not randomized, Part... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: David Geffen School of Medicine at UCLA, Los Angeles, California
Conditions: Relapsed/Refractory Follicular Lymphoma, Marginal Zone Lymphoma (MZL)
Efficacy and Safety Study of Frexalimab (SAR441344) in Adults With Nonrelapsing Secondary Progressive Multiple Sclerosis
Recruiting
The purpose of this randomized, double-blind, placebo-controlled, parallel group study is to determine the efficacy of frexalimab in delaying the disability progression and the safety up to 36 months double-blind administration of study intervention compared to placebo in male and female participants with nrSPMS (aged 18 to 60 years at the time of enrollment). People diagnosed with nrSPMS are eligible for enrollment as long as they meet all the inclusion criteria and none of the exclusion criter... Read More
Gender:
ALL
Ages:
Between 18 years and 60 years
Trial Updated:
07/29/2025
Locations: Sutter East Bay Medical Foundation - Berkeley- Site Number : 8400134, Berkeley, California
Conditions: Multiple Sclerosis
Phase 3 Extension Study to Evaluate Long-term Safety of Ianalumab in Participants With Systemic Lupus Erythematosus (SIRIUS-SLE Extension).
Recruiting
The purpose of this study is to evaluate long-term safety and tolerability of ianalumab in participants with systemic lupus erythematosus who have previously completed the treatment period in one of the two SIRIUS-SLE core studies (CVAY736F12301 or CVAY736F12302).
Gender:
ALL
Ages:
Between 12 years and 100 years
Trial Updated:
07/29/2025
Locations: Advanced Medical Research, La Palma, California
Conditions: Systemic Lupus Erythematosus
A Global Study of Volrustomig (MEDI5752) for Participants With Unresected Locally Advanced Head and Neck Squamous Cell Carcinoma Following Definitive Concurrent Chemoradiotherapy
Recruiting
The main purpose of this study is to assess the efficacy and safety of volrustomig compared to observation in participants with unresected locally advanced head and neck squamous cell carcinoma (LA-HNSCC) who have not progressed after receiving definitive concurrent chemoradiotherapy (cCRT).
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/29/2025
Locations: Research Site, Fountain Valley, California
Conditions: Locally Advanced Head and Neck Squamous Cell Carcinoma
A Study to Assess the Efficacy, Safety, and Pharmacokinetics of Debio 4326 in Pediatric Participants With Central Precocious Puberty (LIBELULA™ Clinical Trial)
Recruiting
The primary objective of this study is to evaluate the efficacy of Debio 4326 in suppressing serum luteinizing hormone (LH) to prepubertal levels 52 weeks after the first Debio 4326 injection in pediatric participants with central precocious puberty (CPP).
Gender:
ALL
Ages:
Between 5 years and 8 years
Trial Updated:
07/29/2025
Locations: Rady Children's Hospital - San Diego, San Diego, California
Conditions: Central Precocious Puberty
Study to Assess the Safety, Tolerability, PK and PD of ABX1100
Recruiting
Study ABX1100-1001 is a first-in-human (FIH), phase 1 study to assess the safety, tolerability, pharmacokinetics and pharmacodynamics of a single ascending dose (SAD) and multiple doses (MD) of ABX1100 administered intravenously to healthy participants and patients with LOPD.
* Part A features a SAD study with a double-blind, placebo-controlled, randomized design in NHVs involving 3 cohorts (A1-A3). This Part also includes a single dose, open-labeled cohort (A4) in NHVs which will commence afte... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: UCI, Orange, California
Conditions: Healthy, Late Onset Pompe Disease
Chemotherapy Combined With Immunotherapy Versus Immunotherapy Alone for Older Adults With Stage IIIB-IV Lung Cancer, The ACHIEVE Trial
Recruiting
This phase III trial compares the effect of adding chemotherapy to immunotherapy (pembrolizumab) versus immunotherapy alone in treating patients with stage IIIB-IV lung cancer. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividin... Read More
Gender:
ALL
Ages:
70 years and above
Trial Updated:
07/29/2025
Locations: Kaiser Permanente Dublin, Dublin, California
Conditions: Advanced Lung Non-Small Cell Carcinoma, Stage IIIB Lung Cancer AJCC v8, Stage IIIC Lung Cancer AJCC v8, Stage IV Lung Cancer AJCC v8
A Study Using Nivolumab, in Combination With Chemotherapy Drugs to Treat Nasopharyngeal Carcinoma (NPC)
Recruiting
This phase II trial tests effects of nivolumab in combination with chemotherapy drugs prior to radiation therapy patients with nasopharyngeal carcinoma (NPC). Immunotherapy with monoclonal antibodies, such as nivolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs, such as gemcitabine and cisplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping the... Read More
Gender:
ALL
Ages:
21 years and below
Trial Updated:
07/29/2025
Locations: Kaiser Permanente Downey Medical Center, Downey, California
Conditions: Stage II Nasopharyngeal Carcinoma AJCC v8, Stage III Nasopharyngeal Carcinoma AJCC v8, Stage IV Nasopharyngeal Carcinoma AJCC v8
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Kaiser Permanente houses over 6,000 physicians in southern California and it is also one of the largest research centers on the state. On its clinical trial division, Kaiser Permanente conducts clinical trials of almost every specialty funded by pharmaceutical companies, government, and foundations.
The Cedars-Sinai Medical Center located in Los Angeles is one of the largest research centers owned and operated by a private hospital in the United States. Focusing on biomedical, cancer, and heart research among other specialties, you can find almost any type of clinical trials for both health and non-healthy volunteers at the research division of Cedar-Sinai Medical Center.
There are around 100,000 clinical trials happening every year across the United States about almost every condition out there. While most clinical trials are testing drugs or medical devices there are also many behavioral and observational trials going on at any point in time. Many paid research studies are held at these California locations.
Clinical trials are incredibly important for making new medical and scientific discoveries, finding new and better methods for diagnosing medical conditions early, testing new interventions, and even developing safer and more effective surgical procedures.
In order for all these discoveries to me made available to the general population they need to go through years of rigorous testing both in healthy and non-healthy volunteers. During those years, medical professionals follow a protocol that has been previously approved by the FDA or other regulatory agency to test the effectiveness and safety of their discovery.
Other people choose to participate in a clinical trial because they feel it is a good way to contribute to the advancement of medical knowledge and that their participation can help many people in the future. The following lists of trials are broken down by condition, and to find a specific clinical trial in your area click through to clinicaltrials.gov.
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