Search
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.
145 - 156 of 5617
Match to Clinical Trials
Access to cutting-edge treatments
Latest clinical trials
Find trials in your area
Search by Name
Filter by Condition
Filter by Location
Filter by Age
Filter by Type
Gender
Type of Study
Clinical Trial Phase
Popular Cities
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
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
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 $100 off your first program with code policy-lab-100.
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 $100 off your first program with code policy-lab-100.
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
A Phase 1B/2 Study of RP1 in Solid Organ Transplant Patients With Advanced Cutaneous Malignancies
Recruiting
This Phase 1B/2 study is a multicenter, open-label, study of RP1 to investigate the (a) objective response rate, in addition to (b) safety and tolerability of RP1 for the treatment of advanced cutaneous malignancies in up to 65 evaluable organ transplant recipients. This will include patients with either previous renal, hepatic, heart, lung, or other solid organ transplantation or hematopoietic cell transplant and experiencing subsequent documented locally advanced or metastatic cutaneous malign... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: University of California, San Diego, La Jolla, California
Conditions: Cutaneous Squamous Cell Carcinoma, Merkel Cell Carcinoma, Basal Cell Carcinoma, Melanoma
BGB-290 and Temozolomide in Treating Isocitrate Dehydrogenase (IDH)1/2-Mutant Grade I-IV Gliomas
Recruiting
This phase I trial studies the side effects and best dose of BGB-290 and temozolomide in treating adolescents and young adults with IDH1/2-mutant grade I-IV glioma that is newly diagnosed or has come back. BGB-290 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from s... Read More
Gender:
ALL
Ages:
Between 13 years and 39 years
Trial Updated:
07/30/2025
Locations: Children's Hospital Los Angeles, Los Angeles, California
Conditions: Glioblastoma, IDH1 Gene Mutation, IDH2 Gene Mutation, Low Grade Glioma, Malignant Glioma, Recurrent Glioblastoma, Recurrent WHO Grade II Glioma, Recurrent WHO Grade III Glioma, WHO Grade II Glioma, WHO Grade III Glioma
QUILT-3.055: A Study of Combination Immunotherapies in Patients Who Have Previously Received Treatment With Immune Checkpoint Inhibitors
Recruiting
This Phase 2b, multicohort, open-label clinical trial (QUILT-3.055) evaluates combination immunotherapies in patients with various advanced solid tumors who have progressed following prior PD-1/PD-L1 checkpoint inhibitor therapy. The trial includes six cohorts:
Cohorts 1-4: Patients who progressed after an initial response (PR or CR) to prior PD-1/PD-L1 therapy, receiving combination therapy with N-803 and a PD-1/PD-L1 checkpoint inhibitor. (Closed to enrollment)
Cohort 5: Patients who progres... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Chan Soon-Shiong Institute for Medicine, El Segundo, California
Conditions: Non-Small Cell Lung Cancer, Small Cell Lung Cancer, Urothelial Carcinoma, Head and Neck Squamous Cell Carcinoma, Merkel Cell Carcinoma, Melanoma, Renal Cell Carcinoma, Gastric Cancer, Cervical Cancer, Hepatocellular Carcinoma, Microsatellite Instability, Mismatch Repair Deficiency, Colorectal Cancer
Testing Osimertinib as a Treatment for Lung Cancers With an EGFR Exon 20 Change
Recruiting
This phase II trial studies how well osimertinib works in treating patients with non-small cell lung cancer with EGFR exon 20 insertion mutation that is stage IIIB-IV or has come back after a period of improvement (recurrent). Osimertinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Providence Saint Joseph Medical Center/Disney Family Cancer Center, Burbank, California
Conditions: Advanced Lung Non-Small Cell Carcinoma, Recurrent Lung Non-Small Cell Carcinoma, Stage IIIB Lung Non-Small Cell Cancer AJCC v7, Stage IV Lung Non-Small Cell Cancer AJCC v7
Dominantly Inherited Alzheimer Network Trial: An Opportunity to Prevent Dementia. A Study of Potential Disease Modifying Treatments in Individuals at Risk for or With a Type of Early Onset Alzheimer's Disease Caused by a Genetic Mutation. Master Protocol DIAN-TU-001
Recruiting
The purpose of this study is to assess the safety, tolerability, biomarker, cognitive and clinical efficacy of investigational products in participants with an Alzheimer's disease-causing mutation by determining if treatment with the study drug slows the rate of progression of cognitive/clinical impairment or improves disease-related biomarkers.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/30/2025
Locations: University of California San Diego Medical Center, La Jolla, California
Feasibility of HPV Testing With Mail-delivered Sample Collection Kits
Recruiting
People living with human immunodeficiency virus (PLWH) have an estimated 1.6-6.0 times increased risk of developing oropharyngeal cancer (OPC) compared with individuals in the general population. 70% of OPCs are caused by human papillomavirus (HPV), and PLWH also have an increased prevalence of oral HPV infection. Disparities by race/ethnicity also include a later stage of diagnosis and less frequent cancer-directed treatment for members of ethnic minority groups. There is little known regarding... Read More
Gender:
ALL
Ages:
35 years and above
Trial Updated:
07/29/2025
Locations: University of California, San Francisco, San Francisco, California
Conditions: HPV Infection, HIV Infections, HPV-Related Malignancy
Safety Study of Viaskin® Peanut Patch in Peanut-Allergic Children 1 Through 3 Years of Age (COMFORT Toddlers)
Recruiting
The primary objective of this study is to assess the 6-month safety of DBV712 250 micrograms (mcg) in subjects 1 through 3 years of age with peanut allergy.
Gender:
ALL
Ages:
Between 1 year and 3 years
Trial Updated:
07/29/2025
Locations: Modena Allergy & Asthma, La Jolla, California
Conditions: Allergy, Peanut Allergy
The Mechanism Versus PPI Trial
Recruiting
The goal of this clinical trial is to learn if a mechanism guided strategy that utilizes a multidisciplinary approach to treat adults patients (age 18-89) with chronic throat symptoms who are undergoing clinical evaluation for laryngopharyngeal reflux (LPR) is more effective than the usual care strategy with proton pump inhibitor (PPI) therapy used in gastroenterology for these patients.
The main question it aims to answer is: Will a greater proportion of the mechanism guided strategy participa... Read More
Gender:
ALL
Ages:
Between 18 years and 89 years
Trial Updated:
07/29/2025
Locations: University of California San Diego, San Deigo, California
Conditions: Laryngopharyngeal Reflux, Cough, Throat Clearing, Dysphonia, Reflux
A Clinical Trial Evaluating the Efficacy and Safety of Leflutrozole on Testicular Function in Men With Hypogonadotropic Hypogonadism
Recruiting
The goal of this clinical trial is to evaluate three doses of the drug leflutrozole on improvement of semen quality in men with hypogonadotropic hypogonadism, a condition that affects hormone levels and fertility. It will also study the safety of leflutrozole.
The main questions it aims to answer are:
* Does leflutrozole improve semen quality?
* What medical problems do participants experience when taking leflutrozole?
Researchers will compare leflutrozole to a placebo (a look-alike substance... Read More
Gender:
MALE
Ages:
Between 18 years and 49 years
Trial Updated:
07/29/2025
Locations: ReproNovo Investigational Site, North Hollywood, California
Conditions: Hypogonadotropic Hypogonadism
A Study to Assess the Safety, Tolerability, and Antileukemic Activity of Debio 1562M in Participants With Acute Myeloid Leukemia (AML)
Recruiting
The primary purpose of Phase 1 is to assess the doses studied under Phase 1 (Dose Escalation) Arm A and identify the recommended dose (RD) for further development (Dose optimization).
The primary objective of Phase 2 is to evaluate the antileukemic activity of Debio 1562M.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: City of Hope Comprehensive Cancer Center, Duarte, California
Conditions: Acute Myeloid Leukemia
Long-Term Study to Assess the Safety and Tolerability of NBI-1065845 as an Adjunctive Treatment in Participants With Major Depressive Disorder (MDD)
Recruiting
This study will evaluate the long-term safety and tolerability of NBI-1065845 as an adjunctive treatment in participants with MDD.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Neurocrine Clinical Site, Orange, California
Conditions: Major Depressive Disorder
NBI-1117568-SCZ3029: Evaluation of NBI-1117568 in Inpatient Adults With Schizophrenia
Recruiting
The primary objective for this study is to evaluate the efficacy of NBI-1117568 compared with placebo on improving behavioral and psychological symptoms of schizophrenia in adults.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/29/2025
Locations: Neurocrine Clinical Site, Anaheim, California
Conditions: Schizophrenia
145 - 156 of 5617
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
See All Conditions