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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.
541 - 552 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.
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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
A Study of ONO-2020 in Participants With Mild to Moderate Alzheimer's Disease
Recruiting
This is a Phase 2, double-blind, parallel-group, placebo-controlled study to assess safety, tolerability, pharmacokinetics, and efficacy of ONO-2020 in participants with mild to moderate Alzheimer's disease (AD). This study aims to determine whether administering ONO-2020, an epigenetic regulator, may improve cognitive functions like memory and cognition in individuals with Alzheimer's disease dementia.
Gender:
ALL
Ages:
Between 55 years and 85 years
Trial Updated:
06/24/2025
Locations: Profound Research LLC at The Neurology Center of Southern California, Carlsbad, California
Conditions: Alzheimer Disease
A Double-blind Study Evaluating the Efficacy, Safety, and Tolerability of Zorevunersen in Patients With Dravet Syndrome
Recruiting
The purpose of the study is to evaluate the efficacy, safety, and tolerability of zorevunersen in Patients with Dravet syndrome.
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
06/24/2025
Locations: Cedars Sinai Medical Center, Los Angeles, California
Conditions: Dravet Syndrome
A Study of LY3541860 in Adult Participants With Moderately to Severely Active Rheumatoid Arthritis
Recruiting
The main purpose of this study is to evaluate the effects of LY3541860 in adult participants with moderately to severely active Rheumatoid Arthritis with inadequate response to a least one biologic disease-modifying antirheumatic drug (bDMARD)or targeted synthetic disease-modifying antirheumatic drug (tsDMARD).
Study participation is approximately 50 weeks, including a 6-week screening period, 24-week treatment period, and a 20-week safety follow up period.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
06/24/2025
Locations: Medvin Clinical Research - Covina, Covina, California
Conditions: Rheumatoid Arthritis
A Study to Investigate the Effectiveness of Tirzepatide (LY3298176) Following Initiation of Ixekizumab (LY2439821) in Participants With Moderate-to-Severe Plaque PsO and Obesity or Overweight in Clinical Practice (TOGETHER AMPLIFY-PsO)
Recruiting
The main purpose of this study is to assess the effectiveness of adding tirzepatide to ixekizumab therapy in standard clinical practice in participants with moderate-to-severe plaque PsO and obesity or overweight with at least 1 weight-related comorbidity.
The study will last up to 12 months.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: First OC Dermatology Research Inc, Fountain Valley, California
Conditions: Psoriasis, Overweight or Obesity
Efficacy and Safety of 186 mcg of OPN-375 Nasal Spray Twice a Day (BID) in Adolescents With Chronic Rhinosinusitis Without Nasal Polyps
Recruiting
This is a 12-Week randomized, double-blind, placebo-controlled, parallel-group, multicenter study evaluating the efficacy and safety of intranasal administration of 186 µg of OPN-375 twice a day (BID) in adolescent subjects with chronic rhinosinusitis without nasal polyps. The total planned number of subjects is approximately 84 adolescents (12-17 years of age) who will be randomly assigned to receive 1 of 2 study treatments using a 1:1 ratio (OPN-375 186 µg:placebo). The study includes a PK sub... Read More
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
06/24/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Chronic Rhinosinusitis Without Nasal Polyps
Intracranial Genetically Modified Immune Cells (TGFβR2KO/IL13Rα2 CAR T-Cells) for the Treatment of Recurrent or Progressive Glioblastoma or Grade 3 or 4 IDH-Mutant Astrocytoma
Recruiting
This phase I trial tests the safety, side effects and best dose of TGFβR2KO/IL13Rα2 chimeric antigen receptor (CAR) T-cells given within the skull (intracranial) in treating patients with glioblastoma or IDH-mutant grade 3 or 4 astrocytoma that has come back after a period of improvement (recurrent) or that is growing, spreading, or getting worse (progressive). CAR T-cell therapy is a type of treatment in which a patient's T cells (a type of immune system cell) are changed in the laboratory so t... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Recurrent Astrocytoma, IDH-Mutant, Grade 3, Recurrent Astrocytoma, IDH-Mutant, Grade 4, Recurrent Glioblastoma
A Study to Evaluate the Safety and Tolerability of Eravacycline in Pediatric Patients Aged 8 to 17 With Complicated Intra-abdominal Infections (cIAI)
Recruiting
A Phase 2 trial to assess safety, tolerability, and pharmacokinetics of eravacycline in pediatric patients aged 8 to \<18 years with cIAI.
Gender:
ALL
Ages:
Between 8 years and 17 years
Trial Updated:
06/24/2025
Locations: Children's Hospital of Orange County, Orange, California
Conditions: Complicated Intra-abdominal Infections (cIAI)
FOLFOX, Botensilimab, and Balstilimab for the Treatment of Localized Rectal Cancer Before Surgery
Recruiting
This phase II trial tests how well fluorouracil, oxaliplatin and leucovorin calcium (folinic acid) (FOLFOX) with botensilimab and balstilimab given before surgery (neoadjuvant) works in treating patients with rectal adenocarcinoma that has not spread to other parts of the body (localized). Currently, neoadjuvant therapy for rectal cancer includes chemotherapy and chemoradiation. Despite these aggressive treatments, only about half of patients achieve a complete clinical response. In fact, over h... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Rectal Adenocarcinoma, Stage IIA Rectal Cancer AJCC v8, Stage III Rectal Cancer AJCC v8
A Study of CLSP-1025 in Adult Patients With Solid Tumors That Harbor the p53 R175H Mutation
Recruiting
Phase 1 dose escalation and expansion study of CLSP-1025, a first-in-class HLA-A\*02:01 specific T cell engager (TCE) targeting solid tumors that harbor the p53 R175H mutation.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: USC - Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Advanced Solid Tumor, Unresectable Solid Tumor, Metastatic Solid Tumor, Colorectal Adenocarcinoma, Pancreatic Adenocarcinoma, Lung Cancer, Ovarian Cancer, Breast Cancer, Head and Neck Squamous Cell Carcinoma, Prostate Cancer, Bladder Cancer
A Study to Test Different Doses of BI 1584862 in People With a Distinct Form of Age-related Macular Degeneration (AMD) Called Geographic Atrophy
Recruiting
This study is open to adults aged 55 years and older with geographic atrophy that was diagnosed by imaging of the retina. The purpose of this study is to find out whether a medicine called BI 1584862 improves the eyes in people with geographic atrophy and to find the most suitable dose.
This study has 4 treatment groups. Participants are put into groups randomly, which means by chance. Initially participants can join a BI 1584862 and a placebo group; then more participants are put randomly in 2... Read More
Gender:
ALL
Ages:
55 years and above
Trial Updated:
06/24/2025
Locations: Retina-Vitreous Associates Medical Group, Beverly Hills, California
Conditions: Geographic Atrophy
A Phase 1 Study of AOH1996 in Patients With Relapsed/Refractory Acute Myeloid Leukemia
Recruiting
This phase 1 trial tests safety, side effects, and best dose of AOH1996 for the treatment of patients with acute myeloid leukemia (AML) that has come back after a period of improvement (relapsed) or AML that has not responded to previous treatment (refractory). AOH1996 is in a class of medications called PCNA inhibitors. It inhibits cancer growth and induces deoxyribonucleic acid (DNA) damage. This may help keep cancer cells from growing and damage cancer cell DNA. Giving AOH1996 may be safe, to... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: City of Hope Medical Center, Duarte, California
Conditions: Recurrent Acute Myeloid Leukemia, Refractory Acute Myeloid Leukemia
A Study to Evaluate the Efficacy, Safety, and Tolerability of IMVT-1402 in Adult Participants With Active, Difficult to Treat Rheumatoid Arthritis
Recruiting
This Phase 2b, multicenter, double-blind, placebo-controlled, randomized withdrawal study is designed to assess the efficacy and safety of IMVT-1402 in adult participants with active, difficult-to-treat, anti-citrullinated protein autoantibody (ACPA) positive rheumatoid arthritis (RA).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Site Number - 1022, Covina, California
Conditions: Rheumatoid Arthritis
541 - 552 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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