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California Paid Clinical Trials
A listing of 5588 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
289 - 300 of 5588
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California is currently home to 5588 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.
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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 Study to Evaluate Efficacy and Safety of Giredestrant Compared With Fulvestrant (Plus a CDK4/6 Inhibitor), in Participants With ER-Positive, HER2-Negative Advanced Breast Cancer Resistant to Adjuvant Endocrine Therapy (pionERA Breast Cancer)
Recruiting
This is a Phase III, randomized, open-label multicenter study that will evaluate the efficacy and safety of giredestrant compared with fulvestrant, both in combination with the investigator's choice of a CDK4/6 inhibitor (palbociclib, ribociclib or abemaciclib), in participants with estrogen receptor-positive (ER+), human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer who have developed resistance to adjuvant endocrine therapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Sutter Auburn Faith Hospital, Auburn, California
Conditions: Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer
BradycArdia paCemaKer With AV Interval Modulation for Blood prEssure treAtmenT
Recruiting
A prospective, multinational, randomized, double-blind, clinical trial evaluating the safety and effectiveness of a novel atrioventricular interval modulation (AVIM) algorithm downloaded into a dual-chamber Medtronic Astra/Azure pacemaker.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Stanford, Redwood City, California
Conditions: Hypertension, Hypertension, Systolic, Hypertension, Essential
A Study to Evaluate Efficacy and Safety of Tulisokibart (MK-7240) in Participants With Moderately to Severely Active Ulcerative Colitis (MK-7240-001)
Recruiting
The purpose of this protocol is to evaluate the efficacy of tulisokibart in participants with moderately to severely active ulcerative colitis. Study 1's primary hypotheses are that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical remission according to the Modified Mayo Score at Week 12, and that at least 1 tulisokibart dose level is superior to Placebo in the proportion of participants achieving clinical remission according to the M... Read More
Gender:
ALL
Ages:
Between 16 years and 80 years
Trial Updated:
06/27/2025
Locations: Clinnova Research ( Site 3803), Anaheim, California
Conditions: Ulcerative Colitis
A Double-Blind, Active-Controlled, Multiple-Ascending Dose Study of Aerosolized RSP-1502 in Subjects With CF and Chronic PA Lung Infection
Recruiting
A double-blind, active-controlled, multiple-ascending dose, safety study of aerosolized RSP-1502 in subjects with cystic fibrosis Pseudomonas aeruginosa lung infection.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/27/2025
Locations: Center for Cystic Fibrosis at Keck Medical Center of USC, Los Angeles, California
Conditions: Cystic Fibrosis Lung, Respiratory Infections, Recurrent, Chronic, Pseudomonas Aeruginosa
A Study to Investigate Efficacy, Safety, and Tolerability of Remibrutinib Compared With Placebo in Adults With CINDU Inadequately Controlled by H1-antihistamines
Recruiting
This is a Phase 3, parallel group, placebo-controlled, double-blind, confirmatory study in patients with CINDU, with an optional Open-label Extension (OLE).
The purpose of the core period (52 weeks of treatment) of this study is to evaluate the efficacy, safety, and tolerability of remibrutinib (LOU064) vs. placebo in adults suffering from CINDU inadequately controlled by H1-antihistamines (H1-AHs).
The purpose of the OLE period is to collect long-term efficacy, safety, and tolerability data o... Read More
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
06/27/2025
Locations: Kern Research, Bakersfield, California
Conditions: Chronic Inducible Urticaria
A Study of Nemtabrutinib Plus Venetoclax vs Venetoclax + Rituximab (VR) in Second-line (2L) + Relapsed/Refractory (R/R) Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) (MK-1026-010/BELLWAVE-010).
Recruiting
The purpose of this study is to assess the safety and tolerability and to confirm the dose of nemtabrutinib in combination with venetoclax in participants with R/R CLL/SLL. The primary study hypotheses are that the combination of nemtabrutinib plus venetoclax is superior to VR with respect to progression-free survival (PFS) per 2018 International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria as assessed by blinded independent central review (BICR).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: MemorialCare Health System - Long Beach Medical Center ( Site 5421), Long Beach, California
Conditions: Leukemia, Lymphocytic, Chronic, B-Cell, Leukemia, Chronic Lymphocytic, Small-Cell Lymphoma, Lymphoma, Small Lymphocytic, CLL, SLL
A Study to Evaluate the Efficacy and Safety of Deucravacitinib in Adults With Active Sjögren's Syndrome
Recruiting
The purpose of this study is to assess the safety and efficacy of two doses of Deucravacitinib in adult participants with Active Sjögren's Syndrome.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Local Institution - 0228, Fullerton, California
Conditions: Sjögren's Syndrome
Study of the Efficacy and Safety of Inhaled Treprostinil in Subjects With Progressive Pulmonary Fibrosis (TETON-PPF)
Recruiting
Study RIN-PF-305 is designed to evaluate the safety and efficacy of inhaled treprostinil in subjects with progressive pulmonary fibrosis (PPF) over a 52-week period.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Peter Morton Medical Building, Los Angeles, California
Conditions: Progressive Pulmonary Fibrosis, Interstitial Lung Disease
A Study to Evaluate the Safety of INCA33890 in Participants With Advanced or Metastatic Solid Tumors
Recruiting
To evaluate the safety, tolerability, and DLTs and determine the MTD and/or RDE(s) of INCA33890 in participants with select advanced or metastatic solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: The Angeles Clinic and Research Institute, Los Angeles, California
Conditions: Solid Tumors, Advanced Solid Tumors, Metastatic Solid Tumors
Phase I/IIa Study of AZD5335 as Monotherapy and Combination Therapy in Participants With Solid Tumors
Recruiting
This research is designed to determine if experimental treatment with Antibody-drug conjugate, AZD5335, alone, or in combination with anti-cancer agents is safe, tolerable, and has anti-cancer activity in patients with advanced tumors
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
06/27/2025
Locations: Research Site, Duarte, California
Study to Assess Adverse Events, Change in Disease Activity, and How Oral Upadacitinib Moves Through the Body of Pediatric Participants With Moderately to Severely Active Ulcerative Colitis.
Recruiting
Ulcerative colitis (UC) is a type of inflammatory bowel disease that causes inflammation and bleeding from the lining of the rectum and colon (large intestine). This study will assess how safe and effective Upadacitinib is in treating pediatric participants with UC. Adverse events and change in disease activity will be assessed.
Upadacitinib (RINVOQ) is a drug approved in adults for moderate- to severely active UC and is being developed for moderate- to severely active UC in pediatric participa... Read More
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
06/27/2025
Locations: Kindred Medical Institute - Corona /ID# 255484, Corona, California
Conditions: Ulcerative Colitis
Reducing Posttraumatic Stress Disorder (PTSD) Symptoms in First Responders and Frontline Health Care Workers
Recruiting
This study addresses PTSD symptoms in First Responders and Healthcare workers. Specifically, it tests whether a brief PTSD treatment (talk therapy) effectively treats PTSD when provided to First Responders and Healthcare workers by counselors in Employee Assistance Programs (EAPs).
The central hypothesis is that the PTSD treatment, Prolonged Exposure for Primary Care (PE-PC), will reduce PTSD symptoms and improve functioning, compared to EAP Treatment as Usual (TAU).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Sharp Healthcare, San Diego, California
Conditions: Post Traumatic Stress Disorder
289 - 300 of 5588
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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