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)
- Recruiting
SAVE-FistulaS: the SelfWrap-Assisted ArterioVEnous Fistulas Study
VenoStent
- Location
- Garden Grove, CA + 27 other US sites
- Eligibility basics
- Ages 18+
- Recruiting
AI-driven Total Parenteral Nutrition Platform
Takeoff41, Inc.
- Location
- Stanford, CA
- Eligibility basics
- Up to age 6 mo
- RecruitingPhase 2
A Study of Selinexor Monotherapy in Subjects With JAK Inhibitor-naïve Myelofibrosis and Moderate Thrombocytopenia
Karyopharm Therapeutics Inc
- Location
- Duarte, CA + 6 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 3
Tissue Repair Gel in Venous Leg Ulcers (US)
TR Therapeutics
- Location
- Castro Valley, CA + 23 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 1
A Study to Evaluate the Safety of a Delivery Device for Administering LCTOPC1 in Participants With Spinal Cord Injury
Lineage Cell Therapeutics, Inc.
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18–65
- RecruitingPhase 1/Phase 2
Study of ATX-01 in Participants With DM1
ARTHEx Biotech S.L.
- Location
- Los Angeles, CA + 4 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingPhase 2
A Clinical Trial to Assess the Efficacy, Safety, and Tolerability of a Repeat Dose of Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder
VistaGen Therapeutics, Inc.
- Location
- Sherman Oaks, CA + 6 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 3
A Study of the Efficacy and Safety of DMX-200 in Patients With FSGS Who Are Receiving an ARB
Dimerix Bioscience Pty Ltd
- Location
- Los Angeles, CA + 19 other US sites
- Eligibility basics
- Ages 12–80
- RecruitingPhase 3
A Study of a Novel Iron-based Phosphate Binder AP301 in Patients With Hyperphosphatemia in the U.S. and China
Alebund Pharmaceuticals
- Location
- Granada Hills, CA + 17 other US sites
- Eligibility basics
- Ages 12+
- RecruitingPhase 3
Study to Evaluate the Efficacy and Safety of Deuruxolitinib in Adolescents With Severe Alopecia Areata
Sun Pharmaceutical Industries, Inc.
- Location
- Bakersfield, CA + 53 other US sites
- Eligibility basics
- Ages 12–17
- RecruitingPhase 2
Focused Orticumab Research for Treating Inflammation in Coronary Arteries
Abcentra
- Location
- Torrance, CA + 4 other US sites
- Eligibility basics
- Ages 18+
- Recruiting
Effectiveness of the SoundHeal Multi-Sensory Integrative Therapy Among Justice-Involved Youth
SoundHeal
- Location
- San Luis Obispo, CA
- Eligibility basics
- Ages 12–18
- RecruitingPhase 1/Phase 2
Open-Label Study of mRNA-3927 in Participants With Propionic Acidemia
ModernaTX, Inc.
- Location
- Los Angeles, CA + 7 other US sites
- Eligibility basics
- Any age listed
- RecruitingPhase 2
Safety and Efficacy Study of VNX001 Compared to Its Individual Components (Lidocaine and Heparin) or Placebo in Subjects With IC/BPS
Vaneltix Pharma, Inc.
- Location
- Newport Beach, CA + 10 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 2
Study of ABX-002 for the Adjunctive Treatment of Major Depressive Disorder (AMPLIFY)
Autobahn Therapeutics, Inc.
- Location
- Anaheim, CA + 31 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 3
Randomized Withdrawal Study in Patients With Schizophrenia
Vanda Pharmaceuticals
- Location
- Costa Mesa, CA + 21 other US sites
- Eligibility basics
- Ages 18–65
- Recruiting
Enhancing Heart Allograft Function With the OCS Heart System Trial
TransMedics
- Location
- San Francisco, CA + 6 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 4
Auryon Atherectomy System With Standard Balloon Angioplasty Versus Standard Balloon Angioplasty Alone
Angiodynamics, Inc.
- Location
- San Diego, CA + 8 other US sites
- Eligibility basics
- Any age listed
- RecruitingPhase 1/Phase 2
A Phase 1/2 Study of NRTX-1001 Neuronal Cell Therapy in Drug-Resistant Bilateral Mesial Temporal Lobe Epilepsy (MTLE)
Neurona Therapeutics
- Location
- Los Angeles, CA + 15 other US sites
- Eligibility basics
- Ages 18–75
- Recruiting
Sirolimus Coated BALloon Versus Standard Balloon Angioplasty in The Treatment of Below The Knee Arterial Disease
Concept Medical Inc.
- Location
- Los Angeles, CA + 24 other US sites
- Eligibility basics
- Ages 21+
- RecruitingPhase 2
Study of ALTO-101 in Patients With Schizophrenia
Alto Neuroscience
- Location
- Garden Grove, CA + 12 other US sites
- Eligibility basics
- Ages 21–55
- RecruitingPhase 1/Phase 2
An Extension Study to Evaluate the Long-Term Safety and Clinical Activity of mRNA-3705 in Participants Previously Enrolled in Other Clinical Studies of mRNA-3705
ModernaTX, Inc.
- Location
- Los Angeles, CA + 2 other US sites
- Eligibility basics
- Ages 1+
- RecruitingPhase 3
Assessment of the Safety and Efficacy of 0.1% RGN-259 Ophthalmic Solution for the Treatment of NK: SEER-2
ReGenTree, LLC
- Location
- Laguna Hills, CA + 23 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 2
Study of Targeted Therapies for the Treatment of Adult Participants With Active Psoriatic Arthritis
AbbVie
- Location
- Huntington Beach, CA + 14 other US sites
- Eligibility basics
- Ages 18+