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California Paid Clinical Trials
A listing of 5626 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
2041 - 2052 of 5626
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California is currently home to 5626 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 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 $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
Featured Trial
Depressive disorder Clinical Study
Recruiting
A clinical study for people that suffer with Depressive disorder
Conditions:
Depressive disorder
Collection of Research Data and Samples From Patients Who Experience Immunotherapy Side Effects
Recruiting
This trial collects research data and samples from patients who experience immunotherapy side effects to store for use in future research studies. Studying research data and samples from patients who experience immunotherapy side effects may help researchers better understand how to predict, prevent, and treat these side effects.
Gender:
ALL
Ages:
All
Trial Updated:
06/24/2025
Locations: Mission Hope Medical Oncology - Arroyo Grande, Arroyo Grande, California
Conditions: Malignancy
Genetic Testing in Guiding Treatment for Patients With Brain Metastases
Recruiting
This phase II trial studies how well genetic testing works in guiding treatment for patients with solid tumors that have spread to the brain. Several genes have been found to be altered or mutated in brain metastases such as NTRK, ROS1, CDK, PI3K, or KRAS G12C. Medications that target these genes such as abemaciclib, paxalisib, entrectinib and adagrasib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Genetic testing may help doctors tailor treatment for... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Mission Hope Medical Oncology - Arroyo Grande, Arroyo Grande, California
Conditions: CDK Gene Mutation, Metastatic Malignant Neoplasm in the Brain, Metastatic Malignant Solid Neoplasm, NTRK Family Gene Mutation, PI3K Gene Mutation, ROS1 Gene Mutation, KRAS G12C Mutation
OPN-375 Efficacy and Safety in Adolescents With Bilateral Nasal Polyps
Recruiting
This is a 16-Week Randomized, Double-Blind, Placebo Controlled, Parallel-Group, Multicenter Study Evaluating the Efficacy and Safety of OPN-375 186 μg Twice a Day (BID) in Adolescents with Bilateral Nasal Polyps followed by a 12-Week Open-Label Treatment Phase. The total planned number of subjects is approximately 120 adolescents (12-17 years of age) who will be randomly assigned to receive 1 of 2 study treatments using a 2:1 ratio (OPN-375 186 μg: Placebo). For the PK sub-study, up to 14 subjec... Read More
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
06/24/2025
Locations: Kern Research, Bakersfield, California
Conditions: Bilateral Nasal Polyposis
Gemcitabine and Cisplatin Without Cystectomy for Patients With Muscle Invasive Bladder Urothelial Cancer and Select Genetic Alterations
Recruiting
This phase II trial studies how well gemcitabine hydrochloride and cisplatin work in treating participants with invasive bladder urothelial cancer. Drugs used in chemotherapy, such as gemcitabine hydrochloride and cisplatin, 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 spreading.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Mission Hope Medical Oncology - Arroyo Grande, Arroyo Grande, California
Conditions: Infiltrating Bladder Urothelial Carcinoma, Stage II Bladder Urothelial Carcinoma, Stage III Bladder Urothelial Carcinoma
Long-Term Follow-up Protocol for Participants Treated With Gene-Modified T Cells
Recruiting
This is a prospective study for the long-term follow-up (LTFU) of safety and efficacy for all pediatric and adult participants exposed to Gene-modified (GM) T-cell therapy participating in a previous Celgene sponsored or Celgene alliance partner sponsored study.
Participants who received at least one infusion of GM T cells will be asked to enroll in this LTFU protocol upon either premature discontinuation from, or completion of the prior parent treatment protocol.
Gender:
ALL
Ages:
All
Trial Updated:
06/24/2025
Locations: City Of Hope, Duarte, California
Conditions: Neoplasms
APL-101 Study of Subjects With NSCLC With c-Met EXON 14 Skip Mutations and c-Met Dysregulation Advanced Solid Tumors
Recruiting
To assess:
* efficacy of APL-101 as monotherapy for the treatment of NSCLC harboring MET Exon 14 skipping mutations, NSCLC harboring MET amplification, solid tumors harboring MET amplification, solid tumors harboring MET fusion, primary CNS tumors harboring MET alterations, solid tumors harboring wild-type MET with overexpression of HGF and MET
* efficacy of APL-101 as an add-on therapy to EGFR inhibitor for the treatment of NSCLC harboring EGFR activating mutations and developed acquired resis... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/24/2025
Locations: Cedars-Sinai Medical Center - Samuel Oschin Comprehensive Cancer Institute, Los Angeles, California
Conditions: Advanced Cancer, Renal Cancer, Gastric Cancer, Gastroesophageal Junction Adenocarcinoma, NSCLC, Lung Cancer, Brain Tumor, Glioblastoma Multiforme, Solid Tumors, EGFR Gene Mutation, MET Amplification, HGF, Thyroid Cancer, Pancreatic Cancer, Colon Cancer, MET Alteration, MET Fusion, Exon 14 Skipping
Vismodegib, FAK Inhibitor GSK2256098, Capivasertib, and Abemaciclib in Treating Patients With Progressive Meningiomas
Recruiting
This phase II trial studies how well vismodegib, focal adhesion kinase (FAK) inhibitor GSK2256098, and capivasertib work in treating patients with meningioma that is growing, spreading, or getting worse (progressive). Vismodegib, FAK inhibitor GSK2256098, capivasertib, and abemaciclib 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:
06/24/2025
Locations: Kaiser Permanente-Deer Valley Medical Center, Antioch, California
Conditions: Intracranial Meningioma, Recurrent Meningioma, NF2 Gene Mutation
eMOTION: Examining Implicit Attitudes in Physical Activity Engagement
Recruiting
This early-phase trial will test intervention strategies to influence implicit attitudes towards physical activity and determine whether changes in those mechanisms result in change in physical activity behavior among inactive adults who are overweight or obese.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/23/2025
Locations: Univeristy of Southern California, Los Angeles, California
Conditions: Physical Activity, Overweight or Obesity, Cancer
A Study of Navenibart in Participants With Hereditary Angioedema
Recruiting
This is a Phase 3 multicenter, randomized, double-blind, placebo-controlled clinical trial evaluating the safety and efficacy of subcutaneous administration of navenibart in adult and adolescent participants with type 1 or type 2 hereditary angioedema (HAE). The goal of this clinical trial is to evaluate the efficacy and safety of navenibart compared to placebo in preventing HAE attacks in participants with HAE.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/23/2025
Locations: Site 14, San Diego, California
Conditions: Hereditary Angioedema (HAE)
Patient Reported Experiences With Sparing External Oblique Fascia Vs Standard Inguinal Orchiectomy
Recruiting
The purpose of this study is to evaluate the difference in patient-reported postoperative outcomes between two standard-of-care surgical techniques for radical orchiectomy (inguinal orchiectomy versus external oblique fascia sparing orchiectomy) for treatment of patients with suspected testicular malignancy. The main questions it aims to answer are:
1. Does sparing the external oblique fascia during orchiectomy reduce pain after surgery?
2. Is there a difference in narcotic consumption after su... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
06/23/2025
Locations: Loma Linda University, Loma Linda, California
Conditions: Testicular Cancer
A Clinical Trial to Learn About the Effects of VHB937 in People With Amyotrophic Lateral Sclerosis (ALS)
Recruiting
This is a multicenter, randomized, double-blind, placebo-controlled, parallel group Phase II study to evaluate the efficacy and safety of VHB937 in participants with early-stage ALS (within 2 years of ALS symptoms onset). The study comprises a core double-blind (DB) 40-week treatment period followed by an open label extension (OLE).
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
06/23/2025
Locations: University of California San Diego, La Jolla, California
Conditions: Amyotrophic Lateral Sclerosis (ALS)
eMOTION: Examining Affective Mechanisms in Physical Activity Engagement
Recruiting
This early-phase trial will test intervention strategies to influence affective mechanisms underlying physical activity and determine whether changes in those mechanisms result in change in physical activity behavior among inactive adults who are overweight or obese.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/23/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Physical Inactivity, Overweight or Obesity, Cancer
2041 - 2052 of 5626
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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