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                    Arthritis Paid Clinical Trials in California
A listing of 73  Arthritis  clinical trials  in California  actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
            1 - 12 of 73
        
                The state of California currently has 73 active clinical trials seeking participants for Arthritis research studies. These trials are conducted in various cities, including Los Angeles, San Francisco, San Diego and Sacramento. 
            
                                Featured Trial
                
                Healthy Participants Needed (Colonoscopy + Cancer Screening)
            
        Recruiting
            
        Earn $325 - $475 in electronic payment card compensation for your time and effort by participating in a clinical study to develop a blood test that may one day help screen for colon cancer. Take a quick quiz to see if you qualify.
    
    
                            Conditions: 
                                    
        
            
                        Healthy
                    
                                    
                        Healthy Volunteers
                    
                                    
                        Healthy Subjects
                    
                                    
                        Healthy Volunteer
                    
                                    
                        Healthy Participants
                    
                                    Featured Offer
                
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        Recruiting
            
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                            Conditions: 
                                    
        
            
                        Overweight
                    
                                    
                        Overweight and Obesity
                    
                                    
                        Obesity
                    
                                    
                        Weight Loss
                    
                                    
                        Morbid Obesity
                    
                                    Featured Trial
                
                Stroke Clinical Study
            
        Recruiting
            
        A clinical study for people that suffer with Stroke
    
    
                            Conditions: 
                                    
        
            
                        Stroke
                    
                                    Featured Trial
                
                Chronic Kidney Disease (CKD) Clinical Study
            
        Recruiting
            
        A clinical study for people that suffer with Chronic Kidney Disease (CKD)
    
    
                            Conditions: 
                                    
        
            
                        Chronic Kidney Disease (CKD)
                    
                                    Featured Trial
                
                Ischemic heart disease (IHD) Clinical Study
            
        Recruiting
            
        A clinical study for people that suffer with Ischemic heart disease (IHD)
    
    
                            Conditions: 
                                    
        
            
                        Ischemic heart disease (IHD)
                    
                                    Featured Trial
                
                Cardiovascular Disease Clinical Study
            
        Recruiting
            
        A clinical study for people that suffer with Cardiovascular Disease
    
    
                            Conditions: 
                                    
        
            
                        Cardiovascular Disease
                    
                                    
                
                                    A Master Protocol Study (LY900028) of Multiple Intervention-Specific-Appendices (ISAs) in Participants With Chronic Pain
                                
            
            
        Recruiting
                            
            
                The purpose of the chronic pain master protocol is to compare independent pain interventions and establish an overarching structure for the disease-state addenda (DSA) and intervention-specific appendices (ISAs). The ISAs may start independently of other ISAs as interventions become available for clinical testing.             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/22/2025
            
            Locations: Irvine Clinical Research, Irvine, California  +3 locations         
        
        
            Conditions: Osteoarthritis, Knee, Diabetic Neuropathic Pain, Chronic Low-back Pain
        
            
        
    
                
                                    An Adaptive Phase 2a/2b Study of LY3871801 in Adult Participants With Rheumatoid Arthritis
                                
            
            
        Recruiting
                            
            
                The main purpose of this study is to evaluate the efficacy and safety of LY3871801 in adult participants with active moderately-to-severe rheumatoid arthritis (RA).             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/22/2025
            
            Locations: Newport Huntington Medical Group, Huntington Beach, California         
        
        
            Conditions: Rheumatoid Arthritis
        
            
        
    
                
                                    A Study to Evaluate Different Targeted Therapies for Patients With Rheumatoid Arthritis
                                
            
            
        Recruiting
                            
            
                Rheumatoid Arthritis (RA) is a chronic inflammatory disease causing pain, stiffness, swelling and loss of joint function. This study will evaluate the efficacy and safety of targeted therapies through a series of substudies for the treatment of moderately to severely active Rheumatoid Arthritis (RA).
This study currently includes 3 substudies evaluating different treatments in participants with RA. Substudy 1 will evaluate lutikizumab monotherapy (treatment given alone) compared to placebo (loo...  Read More             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/19/2025
            
            Locations: Inland Rheumatology & Osteoporosis Medical Group /ID# 272449, Upland, California         
        
        
            Conditions: Rheumatoid Arthritis
        
            
        
    
                
                                    A Study of Ustekinumab or Guselkumab in Pediatric Participants With Active Juvenile Psoriatic Arthritis
                                
            
            
        Recruiting
                            
            
                The purpose of this study is to evaluate the pharmacokinetics (PK), efficacy, safety and immunogenicity of ustekinumab and guselkumab in active juvenile psoriatic arthritis (jPsA).             
        
        
    Gender:
                ALL
            Ages:
                Between 5 years and 17 years
            Trial Updated:
                08/15/2025
            
            Locations: Childrens Hospital Los Angeles, Los Angeles, California  +1 locations         
        
        
            Conditions: Arthritis, Juvenile
        
            
        
    
                
                                    A Study to Evaluate the Efficacy and Safety of Bimekizumab in Adult Study Participants With Active Psoriatic Arthritis
                                
            
            
        Recruiting
                            
            
                The purpose of the study is to compare the efficacy of bimekizumab versus risankizumab after 16 weeks of treatment in study participants with active psoriatic arthritis (PsA).             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/14/2025
            
            Locations: Pa0016 50654, Covina, California  +3 locations         
        
        
            Conditions: Psoriatic Arthritis
        
            
        
    
                
                                    A Study of Guselkumab Administered Subcutaneously in Bio-naive Participants With Active Psoriatic Arthritis Axial Disease
                                
            
            
        Recruiting
                            
            
                The purpose of this study is to evaluate the efficacy of guselkumab treatment in participants with active psoriatic arthritis (PsA) axial disease by assessing reduction in axial symptoms and inflammation.             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/14/2025
            
            Locations: Kaiser Permanent Medical Center, Fontana, California  +3 locations         
        
        
            Conditions: Arthritis, Psoriatic
        
            
        
    
                
                                    Study of Targeted Therapies for the Treatment of Adult Participants With Active Psoriatic Arthritis
                                
            
            
        Recruiting
                            
            
                Psoriatic arthritis (PsA) is a type of arthritis that happens when the body's immune system attacks healthy cells and tissues causing joint pain, stiffness, and swelling. Symptoms can get worse and go away for periods of time. This study will evaluate the efficacy and safety of targeted therapies through a series of substudies, for the treatment of active psoriatic arthritis and to assess the changes in disease symptoms.
The therapies being assessed in this sub-study are risankizumab and lutiki...  Read More             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/11/2025
            
            Locations: Newport Huntington Medical Group /ID# 272764, Huntington Beach, California         
        
        
            Conditions: Psoriatic Arthritis
        
            
        
    
                
                                    Platelet Rich Plasma Injections In Young And Old Human Subjects
                                
            
            
        Recruiting
                            
            
                This is a randomized, double-blind, placebo-controlled phase 2 study with a secondary crossover phase at the end of the initial trial to ensure all subjects receive one PRP injection. The goal is to identify what proteins change in the blood following repeated intraarticular knee PRP injections in patients with knee osteoarthritis. The objective is to determine the protein changes resulting from a single autologous PRP injection (5 mL) in comparison to a normal saline control.
About 60 subjects...  Read More             
        
        
    Gender:
                ALL
            Ages:
                Between 18 years and 70 years
            Trial Updated:
                08/11/2025
            
            Locations: University of California, San Francisco, California         
        
        
            
        
    
                
                                    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:
                08/07/2025
            
            Locations: Site Number - 1022, Covina, California  +4 locations         
        
        
            Conditions: Rheumatoid Arthritis
        
            
        
    
                
                                    A Long-Term Follow-Up Observational Study to Evaluate Safety in Subjects Who Have Received a Gene-Modified Regulatory T Cell (Treg) Therapeutic
                                
            
            
        Recruiting
                            
            
                To assess the emergence, type, severity, and potential causality of delayed adverse events following administration of a gene-modified Treg therapeutic.             
        
        
    Gender:
                ALL
            Ages:
                Between 18 years and 71 years
            Trial Updated:
                08/07/2025
            
            Locations: UCSF Medical Center, San Francisco, California  +1 locations         
        
        
            Conditions: Rheumatoid Arthritis (RA), Hidradenitis Suppurativa (HS)
        
            
        
    
                
                                    Evaluation of Sonelokimab in Patients With Active Psoriatic Arthritis Naive to Biologic Disease-Modifying Antirheumatic Drug
                                
            
            
        Recruiting
                            
            
                This is a study to demonstrate the clinical efficacy and safety of sonelokimab administered subcutaneously compared with placebo in the treatment of adult patients with active psoriatic arthritis who are naive to biologic disease-modifying antirheumatic drug therapy.             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/06/2025
            
            Locations: Clinical Site, San Diego, California  +1 locations         
        
        
            Conditions: Arthritis, Psoriatic
        
            
        
    
                
                                    Evaluation of Sonelokimab in Patients With Active Psoriatic Arthritis and Anti-TNFα Inadequate Response
                                
            
            
        Recruiting
                            
            
                This is a study to confirm the clinical efficacy and safety of sonelokimab compared with placebo in the treatment of adults with active psoriatic arthritis who have had a previous inadequate response or intolerance to anti-tumor necrosis factor (TNF)α therapy.             
        
        
    Gender:
                ALL
            Ages:
                18 years and above
            Trial Updated:
                08/06/2025
            
            Locations: Clinical Site, Pomona, California  +3 locations         
        
        
            Conditions: Arthritis, Psoriatic
        
            
        
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