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.
A Prospective, Multi-center, Randomized Controlled Blinded Trial Demonstrating the Safety and Effectiveness of VNS Therapy® System as Adjunctive Therapy Versus a No Stimulation Control in Subjects With Treatment-Resistant Depression
NCT03887715
Recruiting
Objectives of this study are to determine whether active VNS Therapy treatment is superior to a no stimulation control in producing a reduction in baseline depressive symptom severity, based on multiple depression scale assessment tools at 12 months from randomization.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/24/2025
Locations: Syrentis Clinical Research, Santa Ana, California
Conditions: Treatment Resistant Depression
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A Study of TAK-360 in Adults With Idiopathic Hypersomnia
NCT06812078
Recruiting
Idiopathic Hypersomnia (IH) is a condition where people feel extremely sleepy during the day, especially in the morning, even if they sleep a lot at night. They may have trouble waking up in the morning, no matter how much they sleep (sometimes more than 11 hours per day), and they can't help feeling tired, even after taking daytime naps. Because of this sleepiness, they may have trouble focusing, thinking clearly, or keeping up with daily activities. They may also have symptoms like dizziness o... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Takeda Site 10, Santa Ana, California
Conditions: Idiopathic Hypersomnia
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A Study to Explore the Efficacy of JNJ-89495120 in the Treatment of Major Depressive Disorder
NCT06785012
Recruiting
The purpose of this study is to evaluate how well JNJ-89495120 works (anti-depressant effects) and how well it is tolerated as compared to placebo on reducing the symptoms of depression in participants with major depressive disorder (MDD).
Gender:
ALL
Ages:
Between 18 years and 64 years
Trial Updated:
07/17/2025
Locations: Syrentis Clinical Research, Santa Ana, California
Conditions: Depressive Disorder, Major
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The Effect of Retatrutide Once Weekly on Cardiovascular Outcomes and Kidney Outcomes in Adults Living With Obesity (TRIUMPH-Outcomes)
NCT06383390
Recruiting
The main purpose of this study is to determine if retatrutide can significantly lower the incidence of serious heart-related complications or prevent the worsening of kidney function. The trial will enroll adults with body mass index 27 kg/m\^2 or higher and Atherosclerotic Cardiovascular Disease and/or chronic kidney disease. The study will last for about 5 years. Participants will have up to 27 clinic visits with the study doctor.
Gender:
ALL
Ages:
45 years and above
Trial Updated:
07/17/2025
Locations: Southern California Clinical Research, Santa Ana, California
Conditions: Atherosclerotic Cardiovascular Disease (ASCVD), Chronic Kidney Disease (CKD)
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A Study to Assess Efficacy and Safety of JNJ-77242113 Compared to Placebo and Ustekinumab in Participants With Moderate to Severe Plaque Psoriasis
NCT06934226
Recruiting
The main purpose of this study is to assess how well JNJ-77242113 works when compared to placebo and ustekinumab in participants with moderate to severe plaque psoriasis.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
07/17/2025
Locations: Southern California Dermatology, Santa Ana, California
Conditions: Plaque Psoriasis
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A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and at Least One Weight-Related Comorbidity
NCT06972459
Recruiting
The main purpose of this study is to see how orforglipron, compared with placebo, helps reduce body weight in participants with obesity or with overweight and at least one other related health condition (excluding type 2 diabetes). This trial is part of the master protocol study J2A-MC-GZPO. Participation in the study will last about 18 months.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Southern California Clinical Research, Santa Ana, California
Conditions: Obesity, Overweight
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A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and Type 2 Diabetes
NCT06972472
Recruiting
The main purpose of this study is to see how orforglipron, compared with placebo, helps improve glycemic control in participants with obesity or with overweight and type 2 diabetes. This trial is part of the master protocol study J2A-MC-GZPO. Participation in the study will last about 18 months.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Southern California Clinical Research, Santa Ana, California
Conditions: Obesity, Overweight, Type 2 Diabetes
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Platform Study to Evaluate the Efficacy and Safety of Investigational Compound(s) in Patients With Moderate to Severe Atopic Dermatitis
NCT06947993
Recruiting
This trial is designed to evaluate multiple compounds in participants with moderate to severe atopic dermatitis (AD).
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
07/15/2025
Locations: Novartis Investigative Site, Santa Ana, California
Conditions: Atopic Dermatitis
Register for Updates
4D-150 in Patients With Macular Neovascularization Secondary to Age-Related Macular Degeneration
NCT06864988
Recruiting
A Phase 3, Randomized, Double-Masked, Active-Controlled Trial in Adults with Macular Neovascularization Secondary to Age-Related Macular Degeneration
Gender:
ALL
Ages:
50 years and above
Trial Updated:
07/15/2025
Locations: Orange County Retina Medical Group, Santa Ana, California
Conditions: Macular Neovascularization Secondary to Age-Related Macular Degeneration
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Study to Assess the Effects of Oral NMRA-335140 Versus Placebo in Participants With Major Depressive Disorder
NCT06058013
Recruiting
This is a randomized, double-blind, placebo-controlled, multicenter study to evaluate the effects of NMRA-335140 (formerly BTRX-335140) on symptoms of depression in participants with Major Depressive Disorder (MDD). The study design consists of a Screening Period (up to 28 days), and a 6-week Treatment Period (during which participants will receive either NMRA-335140 or placebo). At the completion of the 6-week Treatment Period, participants who complete the study, provide informed consent, and... Read More
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/11/2025
Locations: Neumora Investigator Site, Santa Ana, California
Conditions: Major Depressive Disorder
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A Study of 2 Doses of EYE103 Compared With Ranibizumab (0.5 mg) in Participants With DME
NCT06957080
Recruiting
EYE-RES-103 is a randomized, double masked pivotal study to evaluate the efficacy and safety of 2 dose levels of EYE103 in comparison with the active control, ranibizumab, in patients with diabetic macular edema (DME). In the first year, all 3 treatment groups will be treated every 4 weeks with either EYE103 or ranibizumab. Beginning at Year 2, the frequency of treatment for participants will shift based on a personalized treatment interval algorithm. Approximately 960 participants will be ent... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/03/2025
Locations: Santa Ana, CA, Santa Ana, California +1 locations
Conditions: Diabetic Macular Edema (DME)
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A Study to Evaluate the Treatment Response and Safety of Two Dose Regimens of Subcutaneous Amlitelimab Compared With Treatment Withdrawal in Participants Aged 12 Years and Older With Moderate-to-severe Atopic Dermatitis
NCT06407934
Recruiting
This is a multinational, multicenter, randomized, double-blind, placebo-controlled, parallel, Phase 3 study for treatment of participants aged 12 years and older diagnosed with moderate-to-severe atopic dermatitis (AD). The main objective of this study is to evaluate if those participants who received amlitelimab dose 1 in the parent studies (EFC17559 \[COAST-1\], EFC17560 \[COAST 2\], EFC17561 \[SHORE\]) and were responders can maintain their response either remaining at dose 1 or switching to... Read More
Gender:
ALL
Ages:
12 years and above
Trial Updated:
07/03/2025
Locations: Southern California Dermatology- Site Number : 8401043, Santa Ana, California
Conditions: Dermatitis Atopic
Register for Updates