There are currently 69 clinical trials in Santa Ana, California looking for participants to engage in research studies. Trials are conducted at various facilities, including Syrentis Clinical Research, GSK Investigational Site, Apex Research Institute and Neuropsychiatric Research Center of Orange County. Whether you're a healthy volunteer looking to participate in paid medical research or seeking trials related to a specific condition, the city provides a diverse range of opportunities near you.
Extension Study for the Port Delivery System With Ranibizumab (Portal)
Recruiting
This study will evaluate the long-term safety and tolerability of the Port Delivery System with ranibizumab (PDS) (100 mg/mL) in participants with neovascular age-related macular degeneration (nAMD) who have either completed Phase II Study GX28228 (Ladder), Phase III Study GR40548 (Archway), Phase IIIb Study WR42221 (Velodrome), or completed Week 24 visit in Study WR42221 but were not eligible to be randomized in WR42221.
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/08/2025
Locations: Orange County Retina Med Group, Santa Ana, California
Conditions: Neovascular Age-Related Macular Degeneration
Study to Assess the Safety and Effectiveness of NMRA-335140-501
Recruiting
This is a 52-week open-label extension (OLE) study that will evaluate the safety, tolerability, and effectiveness of NMRA-335140 in participants with major depressive disorder (MDD). Participants who completed a parent study investigating the efficacy and safety of NMRA-335140 as a treatment for MDD (ie, NMRA-335140-301, NMRA-335140-302, or NMRA-335140-303), and complete the 6 weeks double-blind treatment, provide informed consent, and meet eligibility criteria, may enter this extension study.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
08/08/2025
Locations: Neumora Investigator Site, Santa Ana, California
Conditions: Major Depressive Disorder
A Study to Investigate the Effect on Lung Function of BDA Formulated With a New Propellant (HFO) Compared With an Approved Asthma Treatment (BDA With HFA Propellant) in Participants With Asthma
Recruiting
The purpose of this study is to assess the PD equivalence of the approved asthma combination therapy, BDA, delivered using the proposed replacement propellant HFO compared with BDA delivered using the currently approved propellant HFA in participants with asthma.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/08/2025
Locations: Research Site, Santa Ana, California
Conditions: Asthma
A Study Assessing Corneal Endothelial Cells in Participants With Neovascular Age-related Macular Degeneration(nAMD) Treated With the Port Delivery System With Ranibizumab (PDS)
Recruiting
This study will assess corneal endothelial cells in participants with nAMD treated with PDS refilled every 24 weeks (Q24W).
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/08/2025
Locations: Orange County Retina Med Group, Santa Ana, California
Conditions: Neovascular Age-related Macular Degeneration
A Study to Determine the Efficacy, Safety, and Durability of Faricimab in Participants With Neovascular Age-Related Macular Degeneration
Recruiting
This study is a Phase IIIb/IV, multicenter, randomized, two-arm, open-label 100-week study to investigate the efficacy, safety, and durability of intravitreal 6-mg faricimab administered at up to 24-week intervals in patients with neovascular age-related macular degeneration (nAMD) that are treatment-naïve in the study eye.
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/06/2025
Locations: Orange County Retina Medical Group, Santa Ana, California
Conditions: Neovascular Age-related Macular Degeneration (nAMD)
Characterization And Clinical Outcomes of AA Patients Treated With Ritlecitinib
Recruiting
Alopecia areata (AA) is a chronic relapsing autoimmune disease characterized by nonscarring hair loss affecting children, adolescents, and adults across all ages, races, and genders. AA primarily affects the scalp; however, it also can affect nails, eyelashes, eyebrows, and other hair follicles on the patient's body. The 3 main types of AA are: * Patchy alopecia (PA), as seen in 90% of clinical diagnoses * Alopecia totalis (AT), that affects all scalp hair * Alopecia universalis (AU), involving... Read More
Gender:
ALL
Ages:
12 years and above
Trial Updated:
08/06/2025
Locations: Southern California Clinical Research, Santa Ana, California
Conditions: Alopecia Areata
Study of Zifibancimig in Participants With Neovascular Age-related Macular Degeneration
Recruiting
This is a first in-human study to investigate the safety, tolerability and efficacy of zifibancimig administered through intravitreal (IVT) injections and via the Port Delivery (PD) implant in participants with neovascular age-related macular degeneration (nAMD).
Gender:
ALL
Ages:
50 years and above
Trial Updated:
08/04/2025
Locations: Orange County Retina Med Group, Santa Ana, California
Conditions: Macular Degeneration
Sleep for Stroke Management and Recovery Trial
Recruiting
The purpose of this study is to determine whether treatment of obstructive sleep apnea (OSA) with positive airway pressure starting shortly after acute ischemic stroke (1) reduces recurrent stroke, acute coronary syndrome, and all-cause mortality 6 months after the event, and (2) improves stroke outcomes at 3 months in patients who experienced an ischemic stroke.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/01/2025
Locations: Orange County Global Medical Center, Santa Ana, California
Conditions: Ischemic Stroke, Sleep Apnea, Sleep Apnea, Obstructive, Stroke, CPAP, Telemedicine, Home Sleep Apnea Test, Randomized Clinical Trial, Multicenter Trial
Study to Evaluate the Effect of Balcinrenone/Dapagliflozin in Patients With Heart Failure and Impaired Kidney Function
Recruiting
This is a Phase III, international, multi-centre, randomised, double-blind, parallel-group, double-dummy, active-controlled, event-driven study in patients with chronic HF and impaired kidney function who had a recent HF event. The aim is to evaluate the effect of balcinrenone/dapagliflozin vs dapagliflozin, given once daily on top of other classes of SoC, on CV death and HF events.
Gender:
ALL
Ages:
Between 18 years and 130 years
Trial Updated:
07/31/2025
Locations: Research Site, Santa Ana, California
Conditions: Heart Failure and Impaired Kidney Function
A Phase III Study of AZD0780 on Major Adverse CV Events in Patients With a History of ASCVD Events or at High Risk for a First Event
Recruiting
The purpose of this phase 3, randomized, placebo controlled, event-driven study is to assess the effect of AZD0780, an oral PCSK9 inhibitor, compared with placebo in reducing the risk of MACE-PLUS in patients with established ASCVD or at high risk for a first ASCVD event. The effect of AZD0780 vs placebo on the risk of MACE-PLUS will be evaluated from randomisation until the primary analysis censoring date (PACD). The Study Closure Visit will be scheduled to occur after the PACD and will be the... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: Research Site, Santa Ana, California
Conditions: Cardiovascular Disease
A Study of Remternetug (LY3372993) in Early Alzheimer's Disease (TRAILRUNNER-ALZ 3)
Recruiting
The purpose of this study is to measure the difference in time to developing or worsening memory, thinking, or functional problems due to Alzheimer's disease occurring in participants receiving study drug compared to placebo. Participation could last up to 255 weeks including screening, a double-blind treatment period, and a double-blind observation period. In addition, eligible participants who receive placebo during the double-blind treatment period may choose to extend their study participat... Read More
Gender:
ALL
Ages:
Between 55 years and 80 years
Trial Updated:
07/30/2025
Locations: Syrentis Clinical Research, Santa Ana, California
Conditions: Alzheimer's Disease
A Study of Retatrutide (LY3437943) in the Maintenance of Weight Reduction in Individuals With Obesity
Recruiting
This is a study of retatrutide in participants with obesity. The main purpose is to learn more about how retatrutide maintains body weight loss. The study will have two treatment phases: an 80 week lead-in phase in which all participants will take retatrutide dose 1 and a 36 week randomized, double-blinded phase in which participants will either take retatrutide dose 1, retatrutide dose 2, or switch to placebo. Participation in the study will last around 125 weeks.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/28/2025
Locations: Southern California Clinical Research, Santa Ana, California
Conditions: Obesity