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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.
1 - 12 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.
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
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Recruiting
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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
Nipocalimab in Moderate to Severe Sjogren's Disease
Recruiting
The purpose of this study is to evaluate the clinical efficacy and safety of nipocalimab in participants with moderate to severe Sjogren's disease (SjD).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Providence Medical Foundation, Fullerton, California
Conditions: Sjogrens Syndrome
Testing the Addition of Anti-Cancer Drug, Cetuximab, to Standard of Care Treatment (Pembrolizumab) for Returning or Spreading Head and Neck Cancer After Previous Treatment
Recruiting
This phase III trial compares the effect of adding cetuximab to pembrolizumab versus pembrolizumab alone in treating patients with head and neck squamous cell carcinoma (HNSCC) that has come back after a period of improvement (recurrent) and/or that has spread from where it first started (primary site) to other places in the body (metastatic). Cetuximab is in a class of medications called monoclonal antibodies. It binds to a protein called EGFR, which is found on some types of tumor cells. This... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Fremont - Rideout Cancer Center, Marysville, California
Conditions: Metastatic Head and Neck Squamous Cell Carcinoma, Metastatic Hypopharyngeal Squamous Cell Carcinoma, Metastatic Laryngeal Squamous Cell Carcinoma, Metastatic Oral Cavity Squamous Cell Carcinoma, Metastatic Oropharyngeal Squamous Cell Carcinoma, Recurrent Head and Neck Squamous Cell Carcinoma, Recurrent Hypopharyngeal Squamous Cell Carcinoma, Recurrent Laryngeal Squamous Cell Carcinoma, Recurrent Neck Squamous Cell Carcinoma of Unknown Primary, Recurrent Oral Cavity Squamous Cell Carcinoma, Recurrent Oropharyngeal Squamous Cell Carcinoma, Refractory Head and Neck Squamous Cell Carcinoma, Refractory Hypopharyngeal Squamous Cell Carcinoma, Refractory Laryngeal Squamous Cell Carcinoma, Refractory Oral Cavity Squamous Cell Carcinoma, Refractory Oropharyngeal Squamous Cell Carcinoma, Stage IV Hypopharyngeal Carcinoma AJCC v8, Stage IV Laryngeal Cancer AJCC v8, Stage IV Lip and Oral Cavity Cancer AJCC v8, Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8
STEP TEENS Weight Maintenance: A Research Study on How Well Semaglutide Helps Teenagers With Excess Body Weight to Lose Weight and Maintain Weight Loss
Recruiting
The study is testing how well semaglutide can help adolescents with excess body weight to lose weight and to maintain weight loss. All participants in the study will receive semaglutide as a weekly injection. The study medicine is injected with a thin needle in the stomach, thighs or upper arms. All participants will get semaglutide treatment for a minimum of 3 years.
Gender:
ALL
Ages:
Between 12 years and 15 years
Trial Updated:
07/02/2025
Locations: Neighborhood Healthcare, Escondido, California
Conditions: Obesity
Testing the Addition of an Immunotherapy Drug, Cemiplimab (REGN2810), Plus Surgery to the Usual Surgery Alone for Treating Advanced Skin Cancer
Recruiting
This phase III trial compares the effect of adding cemiplimab to standard therapy (surgery with or without radiation) versus standard therapy alone in treating patients with stage III/IV squamous cell skin cancer that is able to be removed by surgery (resectable) and that may have come back after a period of improvement (recurrent). The usual treatment for patients with resectable squamous cell skin cancer is the removal of the cancerous tissue (surgery) with or without radiation, which uses hig... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Tower Cancer Research Foundation, Beverly Hills, California
Conditions: Recurrent Skin Squamous Cell Carcinoma, Resectable Skin Squamous Cell Carcinoma, Recurrent Head and Neck Cutaneous Squamous Cell Carcinoma, Resectable Head and Neck Cutaneous Squamous Cell Carcinoma, Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8
Human Amniotic Membrane On Venous Leg Ulcers In an Elderly Population
Recruiting
This study is designed to assess the clinical effectiveness of Membrane Wrap, a human amniotic membrane for the management of difficult to heal partial- or full-thickness venous leg ulcers (VLUs)
Gender:
ALL
Ages:
Between 50 years and 85 years
Trial Updated:
07/02/2025
Locations: Center for Clinical Research, San Francisco, California
Conditions: Venous Leg Ulcer
Safety and Preliminary Effectiveness of BNT327, an Investigational Therapy for Breast Cancer, When Given in Combination With Chemotherapy
Recruiting
This study is a Phase II, multi-site, randomized, open-label clinical study to evaluate the safety, efficacy, and pharmacokinetics (PK) of BNT327 at two dose levels in combination with chemotherapeutic agents in the first- and second-line treatment of participants with locally advanced/metastatic triple-negative breast cancer (mTNBC).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Beverly Hills Cancer Center, Beverly Hills, California
Conditions: Locally Advanced Breast Cancer, Triple Negative Breast Cancer, Metastatic Triple Negative Breast Cancers
Comparing Rituximab and Mosunetuzumab Drug Treatments for People With Low Tumor Burden Follicular Lymphoma
Recruiting
This phase III trial compares the effectiveness of rituximab to mosunetuzumab in treating patients with follicular lymphoma with a low tumor burden. Rituximab is a monoclonal antibody. It binds to a protein called CD20, which is found on B cells (a type of white blood cell) and some types of cancer cells. This may help the immune system kill cancer cells. Mosunetuzumab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. It is not yet known if giving r... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Tower Cancer Research Foundation, Beverly Hills, California
Conditions: Classic Follicular Lymphoma, Follicular Lymphoma With Unusual Cytological Features
Psilocybin for Major Depressive Disorder (MDD)
Recruiting
Approximately 240 eligible adult participants (≥18 years old) who meet Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) criteria for Major Depressive Disorder (MDD) will be enrolled. Participants will be randomly assigned to receive a single oral dose of Psilocybin 25 mg, Psilocybin 5 mg, or inactive placebo.
The purpose of this study is to evaluate the efficacy, safety, and tolerability of Psilocybin 25 mg versus placebo in adults with MDD, as assessed by the difference between... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/02/2025
Locations: Kadima Neuropsychiatry Institute, La Jolla, California
Conditions: Depressive Disorder, Major
A Phase I/II, Dose Finding and Optimization Study of [177Lu]Lu-NeoB in Combination With Capecitabine in Patients With GRPR+, ER+, HER2- Metastatic Breast Cancer After Progression on Previous Endocrine Therapy in Combination With a CDK4/6 Inhibitor.
Recruiting
In the phase I part, to determine the recommended doses (RD) and dosing regimens of \[177Lu\]Lu-NeoB in combination with capecitabine in adult patients with gastrin releasing peptide receptor positive, estrogen receptor-positive, human epidermal growth factor receptor-2 negative metastatic breast cancer after progression on previous endocrine therapy in combination with a CDK4/6 inhibitor. In the phase II part, to evaluate the preliminary anti-tumor activity of two different doses/regimens of \[... Read More
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
07/02/2025
Locations: UCLA Medical Center, Los Angeles, California
Conditions: Breast Cancer
A Global Prospective Observational Registry of Patients With Pompe Disease
Recruiting
This is a global, multicenter, prospective, observational registry of patients with Pompe disease, including those with late-onset pompe disease (LOPD) and infantile-onset pompe disease (IOPD). Both untreated patients and those being treated with an approved therapy for Pompe disease are eligible to participate.
The objectives of the registry are:
* To evaluate the long-term safety of Pompe disease treatments through collection of data that describe the frequency of adverse events (AEs)/seriou... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/02/2025
Locations: University of California Irvine, Irvine, California
Conditions: Pompe Disease
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:
07/02/2025
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
A Study to Evaluate the Efficacy, Safety, and Tolerability of BMS-986278 in Participants With Progressive Pulmonary Fibrosis
Recruiting
The purpose of this study is to evaluate the efficacy, safety, and tolerability of BMS-986278 in Participants with Progressive Pulmonary Fibrosis.
Gender:
ALL
Ages:
21 years and above
Trial Updated:
07/02/2025
Locations: Scripps Clinic Torrey Pines, La Jolla, California
Conditions: Progressive Pulmonary Fibrosis
1 - 12 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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