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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.
121 - 132 of 5617
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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.
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Recruiting
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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Study of AB598 Monotherapy and Combination Therapy in Participants With Advanced Cancers
Recruiting
The primary purpose of this study is to assess the safety and tolerability of AB598 in participants with advanced malignancies.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Ronald Reagan UCLA Medical Center, Santa Monica, California
Conditions: Advanced Cancer, Advanced Malignancies, Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Gastroesophageal-junction Cancer (GEJ), Head and Neck Squamous Cell Carcinoma (HNSCC), Non-Small Cell Lung Cancer (NSCLC), Ovarian Cancer, Renal Cell Carcinoma (RCC), Triple Negative Breast Cancer (TNBC)
A Study to Assess Long-term Safety, Tolerability, and Efficacy of Rocatinlimab in Adult and Adolescent Participants With Moderate-to-severe Atopic Dermatitis (AD)
Recruiting
The primary objective of this study is to describe the long-term safety and tolerability of rocatinlimab in participants with moderate-to-severe AD.
Gender:
ALL
Ages:
Between 12 years and 100 years
Trial Updated:
07/30/2025
Locations: Kern Research Inc, Bakersfield, California
Conditions: Atopic Dermatitis
A Study of Treatment of Inflammation Before Stem Cell Transplant in People With a Primary Immune Regulatory Disorder (PIRD) and/or an Autoinflammatory Condition
Recruiting
The researchers are doing this study to find out whether emapalumab or a combination of fludarabine and dexamethasone are effective in preparing people with a primary immune regulatory disorder (PIRD) and/or an autoinflammatory condition to receive a stem cell transplant. The researchers will look at how well the study treatments reduce inflammation and aid in the engraftment process (the process of donated stem cells traveling to the bone marrow, where they begin to make new immune cells.
"Fun... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/30/2025
Locations: University of California, San Francisco (Data collection only), San Francisco, California
Conditions: Primary Immune Regulatory Disorder, Autoimmune Lymphoproliferative, Immune System Diseases
Efficacy, Safety, and Tolerability of Two Administrations of COMP360 in Participants With TRD
Recruiting
Efficacy, Safety, and Tolerability of two administrations of COMP360 in participants with treatment-resistant depression (TRD)
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Clinical Innovations, Inc., Bellflower, California
Conditions: Treatment Resistant Depression
CORE-OLE: A Study of Olezarsen (ISIS 678354) Administered Subcutaneously to Participants With Severe Hypertriglyceridemia (SHTG)
Recruiting
The purpose of this study is to evaluate the safety and tolerability of olezarsen in participants with SHTG.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: LA Universal Research Center, Inc., Los Angeles, California
Conditions: Severe Hypertriglyceridemia
Study of CHS-114 in Participants With Advanced Solid Tumors
Recruiting
This is a Phase 1, open-label, first-in-human, dose-escalation and expansion study of CHS-114, a monoclonal antibody that targets CCR8, as a monotherapy in patients with solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Hoag Memorial Hospital, Newport Beach, California
Conditions: Advanced Solid Tumor, Head and Neck Squamous Cell Carcinoma
Targeted Therapy Directed by Genetic Testing in Treating Patients With Locally Advanced or Advanced Solid Tumors, The ComboMATCH Screening Trial
Recruiting
This ComboMATCH patient screening trial is the gateway to a coordinated set of clinical trials to study cancer treatment directed by genetic testing. Patients with solid tumors that have spread to nearby tissue or lymph nodes (locally advanced) or have spread to other places in the body (advanced) and have progressed on at least one line of standard systemic therapy or have no standard treatment that has been shown to prolong overall survival may be candidates for these trials. Genetic tests loo... Read More
Gender:
ALL
Ages:
All
Trial Updated:
07/30/2025
Locations: PCR Oncology, Arroyo Grande, California
Conditions: Advanced Malignant Solid Neoplasm, Locally Advanced Malignant Solid Neoplasm, Metastatic Malignant Solid Neoplasm, Unresectable Malignant Solid Neoplasm, Recurrent Endometrial Carcinoma, Recurrent Fallopian Tube Carcinoma, Recurrent Ovarian Carcinoma, Recurrent Primary Peritoneal Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Unresectable HER2-Negative Breast Carcinoma, Malignant Female Reproductive System Neoplasm, Recurrent Malignant Female Reproductive System Neoplasm, Recurrent Malignant Solid Neoplasm
A Study of Potential Disease Modifying Treatments in Individuals at Risk for or With a Type of Early Onset AD Caused by a Genetic Mutation
Recruiting
The purpose is to evaluate the biomarker effect, safety, and tolerability of investigational study drugs in participants who are known to have an Alzheimer's disease (AD)-causing mutation. Stage 1 will determine if treatment with the study drug prevents or slows the rate of amyloid beta (Aβ) pathological disease accumulation demonstrated by Aβ positron emission tomography (PET) imaging. Stage 2 will evaluate the effect of early Aβ plaque reduction/prevention on disease progression by assessing d... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: University of California San Diego Medical Center, La Jolla, California
A Study to Test How Different Doses of BI 1703880 in Combination With Ezabenlimab Are Tolerated in People With Different Types of Advanced Cancer (Solid Tumours)
Recruiting
This study is open to adults with different types of advanced cancer. People can take part if previous treatment was not successful, or no treatment exists.
The purpose of this study is to find the highest dose of a medicine called BI 1703880 that people with advanced cancer can tolerate when taken together with ezabenlimab.
BI 1703880 and ezabenlimab are medicines that may help the immune system fight cancer. In this study, BI 1703880 is given to people for the first time.
Participants get B... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Valkyrie Clinical Trials, Los Angeles, California
Conditions: Solid Tumors
Testing Cabozantinib With or Without Atezolizumab in Patients With Advanced Papillary Kidney Cancer, PAPMET2 Trial
Recruiting
This phase II trial compares the effect of atezolizumab in combination with usual treatment with cabozantinib to cabozantinib alone in patients with papillary renal cell carcinoma that has spread from where it first started (primary site) to other places in the body (metastatic). Papillary renal cell carcinoma (PRCC) is a type of kidney cancer that forms in the lining of the tiny tubes in the kidney that return filtered substances that the body needs back to the blood and remove extra fluid and... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Kaiser Permanente-Anaheim, Anaheim, California
Conditions: Metastatic Papillary Renal Cell Carcinoma, Stage IV Renal Cell Cancer AJCC v8
Testing the Addition of Herceptin Hylecta or Phesgo to the Usual Chemotherapy for HER2 Positive Endometrial Serous Carcinoma or Carcinosarcoma
Recruiting
This phase III trial tests whether adding trastuzumab and hyaluronidase-oysk (Herceptin Hylecta \[TM\]) or pertuzumab, trastuzumab and hyaluronidase-zzxf (Phesgo \[TM\]) to the usual chemotherapy (paclitaxel and carboplatin) works to shrink tumors in patients with HER2 positive endometrial cancer. Trastuzumab and pertuzumab are monoclonal antibodies and forms of targeted therapy that attach to specific molecules (receptors) on the surface of tumor cells, known as HER2 receptors. When trastuzumab... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Sutter Auburn Faith Hospital, Auburn, California
Conditions: Endometrial Serous Adenocarcinoma, Uterine Corpus Carcinosarcoma, Endometrial Carcinoma, Endometrial Clear Cell Adenocarcinoma, Endometrial Dedifferentiated Carcinoma, Endometrial Endometrioid Adenocarcinoma, Endometrial Mixed Cell Adenocarcinoma, Endometrial Undifferentiated Carcinoma
A Study of Tucatinib With Trastuzumab and mFOLFOX6 Versus Standard of Care Treatment in First-line HER2+ Metastatic Colorectal Cancer
Recruiting
This study is being done to find out if tucatinib with other cancer drugs works better than standard of care to treat participants with HER2 positive colorectal cancer. This study will also determine what side effects happen when participants take this combination of drugs. A side effect is anything a drug does to the body besides treating your disease.
Participants in this study have colorectal cancer that has spread through the body (metastatic) and/or cannot be removed with surgery (unresect... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Pacific Cancer Medical Center Inc., Anaheim, California
Conditions: Colorectal Neoplasms
121 - 132 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.
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