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California Paid Clinical Trials
A listing of 5602 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
265 - 276 of 5602
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California is currently home to 5602 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
Healthy Participants Needed (Colonoscopy + Cancer Screening)
Recruiting
Earn $325 - $475 in electronic payment card compensation for your time and effort by participating in a clinical study to develop a blood test that may one day help screen for colon cancer. Take a quick quiz to see if you qualify.
Conditions:
Healthy
Healthy Volunteers
Healthy Subjects
Healthy Volunteer
Healthy Participants
Featured Trial
Chronic Cough Research Study
Recruiting
Are you tired of living with chronic cough? Our research study is now looking to enroll people from all backgrounds to help research potential new treatment options for chronic cough.
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you!
Conditions:
Chronic Cough
Refractory or Unexplained Chronic Cough
Cough
Asthma
Sinusitis
Featured Offer
Lose Weight with GLP-1 Medications
Recruiting
Policy Lab has partnered with OnlineSemaglutide.org to offer trusted access to semaglutide and other GLP-1 medications, including generic alternatives to Ozempic® and Wegovy®.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
As a valued user, you’re eligible for $50 off your first program with code policy-lab-50.
GLP-1 medications are scientifically backed to help individuals achieve significant weight loss—on average, 15-20% of body weight within a year.
As a valued user, you’re eligible for $50 off your first program with code policy-lab-50.
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Featured Trial
Chronic Cough Study
Recruiting
Are you tired of living with chronic cough? The ASPIRE Study is now looking to enroll people from all backgrounds to help research potential new treatment options for chronic cough. You are under no obligation to take part and health insurance is not required. Find out more today! We’d love to hear from you.
Conditions:
Chronic Cough
Refractory or Unexplained Chronic Cough
Cough
Asthma
Allergic Asthma
Featured Trial
Depression Clinical Trial
Recruiting
Join us in researching a potential investigational treatment for Depression. Reimbursement for study-related expenses may be available to you.
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Conditions:
Depression
Major Depressive Disorder
Depressive Disorder
Depressive Symptoms
Depressive Disorder
A Study to Investigate ALE.P02 as Monotherapy in Adult Patients With Selected CLDN1+ Solid Tumors
Recruiting
The purpose of this study is to evaluate the safety, tolerability, pharmacokinetic, pharmacodynamic, preliminary anti-tumor activity, and to determine the recommended Phase II dose (RP2D) of the ALE.P02 monotherapy in adult patients with selected squamous solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Providence Medical Foundation, Fullerton, California
Conditions: Squamous Non-small-cell Lung Cancer, Head and Neck Squamous Cell Carcinoma, Cervical Squamous Cell Carcinoma, Esophageal Squamous Cell Carcinoma
SUPRAME-ACTengine® IMA203 vs. Investigator's Choice of Treatment in Previously Treated, Unresectable or Metastatic Cutaneous Melanoma
Recruiting
This clinical trial is a prospective, multicenter, open-label, randomized, actively controlled, parallel-group Phase 3 clinical trial to evaluate the efficacy, safety and tolerability of treatment with IMA203 administered at the recommended phase 2 dose versus investigator's choice of treatment in patients with previously treated, unresectable or metastatic cutaneous melanoma.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: City of Hope National Medical Center, Duarte, California
Conditions: Melanoma, Cutaneous Malignant
Study of 225Ac-ABD147 to Establish Optimal Dose in Patients With SCLC and LCNEC of the Lung That Previously Received Platinum-based Chemotherapy
Recruiting
The study has 2 parts, Phase 1a and Phase 1b. The goal of Phase 1a is to gather safety, PK and initial efficacy data for 225Ac-ABD147 to better understand best doses for patients with small cell lung cancer (SCLC) and large cell neuroendocrine carcinoma (LCNEC) of the lung following platinum-based chemotherapy.
An initial group of patients will also be given an experimental imaging agent called 111In-ABD147 to help understand where ABD147 goes in the body.
The goal of Phase 1b is to gather add... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Hoag Memorial Hospital Presbyterian, Newport Beach, California
Conditions: Small-Cell Lung Cancer (SCLC), Large Cell Neuroendocrine Carcinoma of the Lung
NKX019, Intravenous Allogeneic Chimeric Antigen Receptor Natural Killer Cells (CAR NK), in Participants With Immune-Mediated Diseases (Ntrust-2)
Recruiting
This is an open-label, multi-center, multi-cohort, non-randomized Phase 1 study to determine the safety and tolerability of NKX019 (allogeneic CAR NK cells targeting CD19) in participants with Immune-Mediated Diseases (IMD) including systemic sclerosis \[SSc\], idiopathic inflammatory myopathies \[IIM\], and antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis \[AAV\].
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
08/18/2025
Locations: Nkarta Investigational Site, Orange, California
Conditions: Systemic Sclerosis, Idiopathic Inflammatory Myopathies, Antineutrophil Cytoplasmic Antibody-Associated Vasculitis
Safety, Efficacy, and Pharmacokinetics of CSL889 in Adults and Adolescents With Sickle Cell Disease During Vaso-Occlusive Crisis
Recruiting
This study consists of two parts: phase 2 (Part A) and phase 3 (Part B). It is a multicenter study designed to evaluate the safety, effectiveness, and pharmacokinetics (PK) of CSL889 (human hemopexin) when given intravenously (IV) to adults and adolescents with sickle cell disease (SCD) experiencing vaso-occlusive crises (VOC). The main objectives of the study are to assess how CSL889 affects the time it takes for VOC to resolve in participants with SCD, and to evaluate the safety and tolerabili... Read More
Gender:
ALL
Ages:
12 years and above
Trial Updated:
08/18/2025
Locations: University of California Irvine, Orange, California
Conditions: Sickle Cell Disease Vaso-occlusive Crisis
Safety and Efficacy of EIK1001 in Combo With Pembro Versus Placebo and Pembro as First-Line Therapy in Patients With Advanced Melanoma.
Recruiting
The study is for patients with advanced melanoma who are eligible for standard therapy with Pembrolizumab.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: The Oncology Institution of Hope and Innovation, Los Angeles, California
Conditions: Advanced Melanoma
A Study of BMS-986482 Alone or as Combination Therapy in Participants With Advanced Solid Tumors
Recruiting
The purpose of this study is to test the safety and efficacy of BMS-986482 alone and as combination therapy in participants with advanced solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Local Institution - 0005, Irvine, California
Conditions: Advanced Solid Tumors
A Phase 2 Study of NEU-411 in Companion Diagnostic-Positive Participants With Early Parkinson's Disease
Recruiting
The goal of this Phase 2 clinical trial is to investigate the efficacy and safety of NEU-411 in men and women aged 40-80 years with early Parkinson's Disease (PD) who have predicted elevations in the activity of the "leucine-rich repeat kinase 2" ("LRRK2" for short) pathway based on their genetic profile. A DNA test will be used to identify the "LRRK2-driven" population with predicted elevation in the LRRK2 pathway.
Participants will:
• Take NEU-411 or placebo every day for 52 weeks
Gender:
ALL
Ages:
Between 40 years and 80 years
Trial Updated:
08/18/2025
Locations: Neuro-Pain Medical Center, Fresno, California
Conditions: Parkinson Disease, Parkinson, Idiopathic Parkinson Disease, Early Parkinson Disease (Early PD), Parkinson Disease, Idiopathic
FORWARD CAD IDE Study
Recruiting
The FORWARD CAD IDE Study is a Prospective, Multicenter, Single-Arm, Investigational Device Exemption (IDE) Study conducted to assess the safety and effectiveness of the Shockwave Intravascular Lithotripsy (IVL) System with the Javelin Coronary IVL Catheter for the treatment of calcified, stenotic de novo coronary artery lesions prior to stenting.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Scripps Health, La Jolla, California
Conditions: Coronary Arterial Disease (CAD)
Glycogen Storage Disease Type Ia (GSDIa) Disease Monitoring Program
Recruiting
The main objective of this observational study is to evaluate the long-term safety and effectiveness of DTX401 for at least 10 years after DTX401 administration.
Gender:
ALL
Ages:
2 years and above
Trial Updated:
08/18/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Glycogen Storage Disease Type Ia
A Study to Evaluate the Adverse Events, Efficacy, and Optimal Dose of Intravenous (IV) ABBV-400 in Combination With IV Fluorouracil, Leucovorin, and Budigalimab in Adult Participants With Locally Advanced Unresectable or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma
Recruiting
Cancer is a condition where cells in a specific part of body grow and reproduce uncontrollably. The purpose of this study is to assess adverse events and change in disease activity when ABBV-400 is given in combination with Fluorouracil, Leucovorin, and a programmed cell death receptor 1 (PD1) inhibitor (Budigalimab) (AFLB) to adult participants to treat locally advanced unresectable or metastatic gastric, gastroesophageal junction, or esophageal adenocarcinoma (mGEA).
ABBV-400 and Budigalimab... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: City of Hope National Medical Center /ID# 268690, Duarte, California
Conditions: Locally Advanced Unresectable or Metastatic Gastric Adenocarcinoma, Gastroesophageal Junction Adenocarcinoma, Esophageal Adenocarcinoma
Beamion PANTUMOR-1: A Study to Test Whether Zongertinib Helps People With Advanced Cancers With HER2 Alterations
Recruiting
This is a study for people with advanced cancer for whom previous treatment was not successful. Adults aged 18 and over with advanced cancer with HER2 alterations can join the study. The purpose of this study is to find out whether a medicine called zongertinib helps people with advanced cancers with HER2 alterations. HER2 alterations can cause cancer. Zongertinib inhibits HER2.
Participants are put into 13 groups based on the type of advanced cancer and the type of HER2 alterations they have.... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Precision NextGen Oncology, Beverly Hills, California
Conditions: Solid Tumours
265 - 276 of 5602
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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