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California Paid Clinical Trials
A listing of 5585 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1 - 12 of 5585
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California is currently home to 5585 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
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Featured Trial
Studying an Investigational Virus Vaccine
Recruiting
The main objectives of this study are to assess the safety and effectiveness of an investigational vaccine aimed at preventing norovirus, commonly known as the stomach flu. Participants will be randomly assigned to receive either the investigational vaccine or a placebo. Should you express interest, you will be contacted directly by the research site, which will provide further details and answer any questions you may have about study requirements, risks/benefits, and any compensation.
Conditions:
Healthy
Interested in vaccine studies
All Conditions
Preventative Trials
Featured Trial
Type 2 Diabetes Clinical Trial
Recruiting
Can changing your breakfast improve your type 2 diabetes? If you have an HbA1C of 7.0% or higher, you are invited to participate in an online study at the University of Michigan.
Conditions:
Type 2 Diabetes
Diabetes Mellitus Type 2 in Obese
Diabetes Type Two
Type 2 Diabetes Mellitus
Diabete Type 2
Featured Trial
Evaluating an Investigational Treatment for Hidradenitis Suppurativa
Recruiting
The main objectives of this Phase 2 study are to evaluate the safety and effectiveness of an investigational medication in adults with moderate to severe hidradenitis suppurativa (HS), a chronic skin condition. Participants will be randomly assigned to receive the investigational treatment or a placebo. Should you express interest, the research site will contact you directly to provide further details and address any questions you may have about study requirements, risks/benefits, and compensation.
Conditions:
All Conditions
Hidradenitis suppurativa (Skin disorder)
Dermatology
Featured Trial
High Triglyceride Clinical Research Study
Recruiting
Living with high triglycerides? See if our clinical study is right for you.
Don’t let financial stress hold you back. All clinical study-related assessments, care, and the investigational study drug are available at no cost. You could also be eligible for compensation for travel.
Don’t let financial stress hold you back. All clinical study-related assessments, care, and the investigational study drug are available at no cost. You could also be eligible for compensation for travel.
Conditions:
High Triglycerides
High Triglyceride Level
Hypertriglyceridemia
Elevated Triglycerides
Triglycerides High
A Phase IIb, Randomized, Double-Blind, Placebo-Controlled Study of Elismetrep (K-304) in the Treatment of Migraine
Recruiting
This is a double-blind, randomized, multicenter, outpatient evaluation of the safety and efficacy of elismetrep as compared to placebo in the treatment of moderate or severe migraine.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
04/22/2025
Locations: Hope Clinical Research, Canoga Park, California
Conditions: Acute Migraine
Non-healing Venous Leg Ulcers Treated With Standard Care With or Without BR-AC
Recruiting
This study examines a patient population with a non-healing, non-infected venous leg ulcer (VLU) having adequate arterial perfusion with confirmed venous reflux. It is hypothesized that weekly applications of the human placental allograft BioREtain® Amnion Chorion (BR-AC) applied to a non-healing VLU will result in a higher proportion of wounds showing complete healing within 12 weeks of initiating therapy, compared to standard care alone.
This study has a crossover period, where subjects on st... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: Site 2b, Castro Valley, California
Conditions: Non-infected Venous Leg Ulcer, Venous Leg Ulcer, Venous Insufficiency, Venous Stasis, Venous Reflux
Testing the Addition of the Immunotherapy Drug, Pembrolizumab, to Radiation Therapy Compared to the Usual Chemotherapy Treatment During Radiation Therapy for Bladder Cancer, the PARRC Trial
Recruiting
This phase II trial compares the use of pembrolizumab and radiation therapy to chemotherapy with cisplatin, gemcitabine, 5-fluorouracil or mitomycin-C and radiation therapy for the treatment of patients with non-muscle invasive bladder 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, such as cisplatin, gemcitabine, 5-fluorouracil o... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: AIS Cancer Center at San Joaquin Community Hospital, Bakersfield, California
Conditions: Non-Muscle Invasive Bladder Urothelial Carcinoma, Recurrent Non-Muscle Invasive Bladder Urothelial Carcinoma, Stage I Bladder Cancer AJCC v8
A Proof-of-Concept Study to Assess the Efficacy, Safety and Tolerability of Itepekimab (Anti--IL-33 mAb) in Participants With Chronic Rhinosinusitis Without Nasal Polyps
Recruiting
ACT18421 is a multinational, randomized, double-blind, placebo-controlled, parallel-group, Phase 2 study with 3 treatment groups. The purpose of the study is to evaluate the efficacy, safety and tolerability of 2 dosing regimens of itepekimab compared to placebo in male and female participants with chronic rhinosinusitis without nasal polyps (CRSsNP) aged 18 years of age and older.
Study details include:
* The study duration (4-week screening, 24--week intervention, 20--week safety followup) w... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: Modena Allergy + Asthma- Site Number : 8400005, La Jolla, California
Conditions: Chronic Rhinosinusitis Without Nasal Polyps
A Phase I/IIa Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Efficacy of AZD0022 as Monotherapy and in Combination With Anti-cancer Agents in Adult Participants With Tumours Harbouring a KRASG12D Mutation
Recruiting
This is a first-in-human, modular, Phase I/IIa, open-label, multi-centre study to assess the safety, tolerability, PK, and preliminary efficacy of AZD0022 monotherapy in combination with other anti-cancer agents in participants with tumours harbouring a KRASG12D mutation.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: Research Site, Duarte, California
Conditions: Advanced Solid Tumours, Non-Small Cell Lung Cancer (NSCLC), Pancreatic Ductal Adenocarcinoma (PDAC), Colorectal Cancer (CRC)
A Trial to Evaluate Efficacy and Safety of Buloxibutid in People With Idiopathic Pulmonary Fibrosis.
Recruiting
The ASPIRE trial is a 52 week randomized, double-blind, placebo-controlled, parallel-group, multicenter trial in which the efficacy, safety, and pharmacokinetics of orally administered buloxibutid, either on top of stable IPF therapy or as monotherapy, are assessed in participants with IPF.
Trial website: www.aspire-ipf.com
Gender:
ALL
Ages:
40 years and above
Trial Updated:
04/22/2025
Locations: Paradigm Clinical Research, La Mesa, California
Conditions: Idiopathic Pulmonary Fibrosis (IPF)
EF-41/KEYNOTE D58: Phase 3 Study of Optune Concomitant With Temozolomide Plus Pembrolizumab in Newly Diagnosed Glioblastoma
Recruiting
This is a multicenter, two-arm, randomized, double-blind, placebo-controlled study of Optune® (Tumor Treating Fields at 200 kHz) together with maintenance Temozolomide (TMZ) chemotherapy agent and pembrolizumab compared to Optune® together with maintenance TMZ and placebo in newly diagnosed Glioblastoma (GBM) patients. The primary objective of the study is to evaluate the Overall Survival (OS).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Glioblastoma
A Trial to Evaluate Intravesical Nadofaragene Firadenovec Alone or in Combination With Chemotherapy or Immunotherapy in Participants With High-grade BCG Unresponsive Non-muscle Invasive Bladder Cancer
Recruiting
The pivotal phase 3 trial (rAd-IFN-CS 003) evaluating the efficacy of nadofaragene firadenovec showed that 55 (53.4%) of 103 subjects with CIS ± high-grade Ta/T1 achieved a complete response (CR) at 3 months. In this trial, the safety and efficacy of intravesical instillation of nadofaragene firadenovec alone or in combination with chemotherapy or immunotherapy will be evaluated in participants with NMIBC CIS (± high-grade Ta/T1).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: Ferring Investigational Site, Fresno, California
Conditions: Non-muscle Invasive Bladder Cancer With Carcinoma in Situ
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:
04/22/2025
Locations: UC Irvine Health/Chao Family Comprehensive Cancer Center, Orange, California
Conditions: Metastatic Urothelial Carcinoma, Unresectable Urothelial Carcinoma
A Study to Evaluate the Efficacy and Safety of Tulisokibart (MK-7240) in Participants With Moderate to Severe Crohn's Disease (MK-7240-008)
Recruiting
The purpose of this protocol is to evaluate the efficacy and safety of tulisokibart in participants with moderately to severely active Crohn's disease. 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 per Crohn's Disease Activity Index score (\<150, US/FDA) or per stool frequency and abdominal pain score (EU/EMA) and in the proportion of participants achieving endoscopic response at Week... Read More
Gender:
ALL
Ages:
Between 16 years and 80 years
Trial Updated:
04/22/2025
Locations: Clinnova Research ( Site 5110), Anaheim, California
Conditions: Crohn's Disease
A Study to Test Whether Vicadrostat in Combination With Empagliflozin Helps People With Heart Failure
Recruiting
This study is open to adults aged 18 or above legal age with heart failure. People can join the study if they have heart failure symptoms and a left ventricular ejection fraction (LVEF) of 40% or more. The purpose of this study is to find out whether vicadrostat (BI 690517) in combination with empagliflozin helps people with heart failure.
Participants are put into 2 groups by chance. Every participant has an equal chance of being in each group. The groups are:
* Vicadrostat and empagliflozin... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/22/2025
Locations: Velocity Clinical Research-Chula Vista-67286, Chula Vista, California
Conditions: Heart Failure
Proof of Concept and Dose-ranging Study of INDV-2000 in Individuals With Moderate to Severe Opioid Use Disorder
Recruiting
The purpose of this study is to measure safety and efficacy and to determine dose-response relationship for INDV-2000 in participants with moderate to severe Opioid Use Disorder (OUD) who are new to treatment, have recently initiated or completed short-term medically supervised withdrawal with transmucosal (TM) buprenorphine, and are interested in transitioning to a non opioid treatment.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
04/22/2025
Locations: North County Clinical Research, Oceanside, California
Conditions: Opioid Use Disorder
1 - 12 of 5585
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.
Search Clinical Trials in California by Condition
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