Location · California
Clinical trials recruiting in California
1900 recruiting studies have at least one site in California; 700 accept healthy volunteers. Studies that need a specific condition are included too, so check each listing.
Want the research companies that run paid Phase 1 studies for healthy volunteers? Paid clinical trial companies in California.
1,900 recruiting studiesSource: ClinicalTrials.gov, refreshed October 27, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingPhase 3
Idiopathic Pulmonary Fibrosis (IPF)-Related Chronic Cough Reduction With Nalbuphine Extended-Release (NAL ER) Tablets
Trevi Therapeutics
- Location
- Newport Beach, CA + 21 other US sites
- Eligibility basics
- Ages 40+
- RecruitingPhase 2/Phase 3
Study of an Injectable Regimen of GS-3242 With Lenacapavir Compared to Biktarvy in People New to HIV-1 Treatment
Gilead Sciences
- Location
- Torrance, CA + 11 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
A Study of Trontinemab in Cognitively Unimpaired Individuals at Risk for Progression to Symptomatic Alzheimer's Disease
Hoffmann-La Roche
- Location
- Irvine, CA + 11 other US sites
- Eligibility basics
- Ages 55–80
- RecruitingPhase 3
Forward Treatment of Attention Deficit and Hyperactivity Using Solriamfetol (FOCUS-2)
Axsome Therapeutics, Inc.
- Location
- Anaheim, CA + 28 other US sites
- Eligibility basics
- Ages 6–11
- RecruitingPhase 3
Forward Treatment of Attention Deficit and Hyperactivity Using Solriamfetol (FOCUS-3)
Axsome Therapeutics, Inc.
- Location
- Anaheim, CA + 27 other US sites
- Eligibility basics
- Ages 12–17
- RecruitingPhase 3
Studying NMDA and Sigma-1 in Smoking Cessation Treatment (SUMMIT)
Axsome Therapeutics, Inc.
- Location
- Lemon Grove, CA + 24 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 3
A 52-week Study of Remibrutinib in IgE-mediated Food Allergy
Novartis Pharmaceuticals
- Location
- Los Angeles, CA + 17 other US sites
- Eligibility basics
- Ages 12–65
- RecruitingPhase 2
A Study to Assess the Efficacy and Safety of GIA632 Across a Range of Doses in Participants With Moderate to Severe Cutaneous Lichen Planus
Novartis Pharmaceuticals
- Location
- Fountain Valley, CA + 14 other US sites
- Eligibility basics
- Ages 18–99
- RecruitingPhase 2
A Study of EDG-15400 in Adults With Heart Failure With Preserved Ejection Fraction (EQUINOX-HFpEF)
Edgewise Therapeutics, Inc.
- Location
- Vista, CA + 3 other US sites
- Eligibility basics
- Ages 30–84
- RecruitingPhase 3
Efficacy, Safety, and Pharmacokinetics of Tirzepatide (LY3298176) Once Weekly Versus Placebo in Pediatric Participants 6 to Less Than 12 Years of Age Who Have Obesity (ADVANCE-SURMOUNT-KIDS)
Eli Lilly and Company
- Location
- Oxnard, CA
- Eligibility basics
- Ages 6–11
- RecruitingPhase 3
A Study to Learn About the Monthly Dosing Study Medicine Called Berobenatide in Adults With Breathing Problems During Sleep and Overweight or Obesity Who Use a Breathing Machine (PAP) (VESPER-OSA 1)
Pfizer
- Location
- Riverside, CA + 2 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
A Phase 3 Trial for Intravitreal Injection of 4D-150 in Adults With Diabetic Macular Edema (DME).
4D Molecular Therapeutics
- Location
- Encino, CA + 8 other US sites
- Eligibility basics
- Ages 18+
- Recruiting
The Artisse™ Intrasaccular Device is Indicated for the Treatment of Wide-neck Bifurcating Intracranial Aneurysms (IAs).
Medtronic Neurovascular Clinical Affairs
- Location
- Los Angeles, CA + 24 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 2/Phase 3
Alpelisib in Pediatric and Adult Patients With Lymphatic Malformations Associated With a PIK3CA Mutation.
Novartis Pharmaceuticals
- Location
- Oakland, CA + 17 other US sites
- Eligibility basics
- Ages 0 mo–100
- RecruitingPhase 1
A Phase 1 Study of LY5830966 in Participants With Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (PPV-MF), or Post-Essential Thrombocythemia Myelofibrosis (PET-MF) Who Have Been Failed by a Type I…
Ajax Therapeutics, Inc., a wholly owned subsidiary of Eli Lilly and Company
- Location
- Palo Alto, CA + 12 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 2
An Open-Label Study of CTI-1601 in Subjects With Friedreich's Ataxia
Larimar Therapeutics, Inc.
- Location
- San Francisco, CA + 6 other US sites
- Eligibility basics
- Ages 2–60
- RecruitingPhase 3
A Double Blind Study Performed to Evaluate the Efficacy and the Safety of EscharEx in Debridement of VLU (VALUE)
MediWound Ltd
- Location
- Fresno, CA + 11 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
A Study to Evaluate Axatilimab and Corticosteroids as Initial Treatment for Chronic Graft-Versus-Host Disease
Incyte Corporation
- Location
- Duarte, CA + 36 other US sites
- Eligibility basics
- Ages 12+
- RecruitingPhase 1
A Trial to Test the Safety and Efficacy of TEV-53408 in Participants With Vitiligo
Teva Branded Pharmaceutical Products R&D LLC
- Location
- Fremont, CA + 2 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 1/Phase 2
A Study of Pirtobrutinib in Participants With Immune Thrombocytopenia
Eli Lilly and Company
- Location
- Los Angeles, CA + 7 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 2/Phase 3
A Long-Term Study of ALKS 2680 in Subjects With Narcolepsy and Idiopathic Hypersomnia
Alkermes, Inc.
- Location
- Los Angeles, CA + 32 other US sites
- Eligibility basics
- Ages 18–70
- RecruitingPhase 3
A Study of Oral Atogepant Tablets to Assess Adverse Events and Change in Disease Activity To Prevent Migraine in Participants Aged 12 to 17 Years
AbbVie
- Location
- Anaheim, CA + 28 other US sites
- Eligibility basics
- Ages 12–17
- RecruitingPhase 3
A Study to Assess Adverse Events and Effectiveness of Gel Stent (XEN63) Implantation Using Ab Interno and Ab Externo Approaches in Adult Participants With Glaucoma
AbbVie
- Location
- Culver City, CA + 24 other US sites
- Eligibility basics
- Ages 45+
- RecruitingPhase 2
An Open-Label Pilot Study of VTX2735 in Recurrent Pericarditis
Zomagen Biosciences Ltd.
- Location
- La Jolla, CA + 14 other US sites
- Eligibility basics
- Ages 18–75