California is currently home to 5588 active clinical trials, seeking participants for engagement in research studies. These trials take place at a variety of cities in the state, including Los Angeles, San Francisco, San Diego and Sacramento. Whether you're a healthy volunteer interested in paid medical research or someone seeking trials related to a specific condition, the state offers a diverse array of opportunities in your vicinity.
A Randomized Study of XEN1101 Versus Placebo in Focal-Onset Seizures (X-TOLE3)
NCT05716100
Recruiting
The X-TOLE3 Phase 3 clinical trial is a randomized, double-blind, placebo-controlled study that will evaluate the clinical efficacy, safety and tolerability of XEN1101 administered as adjunctive therapy in focal-onset seizures.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Rancho Research Institute, Downey, California
Conditions: Focal Onset Seizures
Register for Updates
Novel Combinations in Participants With Locally Advanced Unresectable or Metastatic Gastric or Gastroesophageal Junction Adenocarcinoma
NCT05702229
Recruiting
This is a Phase II, open-label, multi-drug, multi-centre study designed to assess the efficacy, safety, tolerability, pharmacokinetics, and immunogenicity of novel combination therapies in participants with locally advanced unresectable or metastatic gastric or GEJ adenocarcinoma.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Research Site, Los Angeles, California
Conditions: Gastric Cancer
Register for Updates
ALT-FLOW II Trial of the Edwards APTURE Transcatheter Shunt System
NCT05686317
Recruiting
This is a prospective, multi-center, randomized, sham-controlled, double-blinded (participant and outcomes assessor) clinical trial.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: University of California Irvine, Irvine, California
Conditions: Heart Failure
Register for Updates
24 Weeks Double-blind Randomized Placebo-controlled Trial to Evaluate Efficacy, PK, Safety of LOU064 in Adolescents (12 - <18) With CSU and Inadequate Response to H1-antihistamine Followed by Optional 3 Years Open-label Extension and an Optional 3 Years Safety Long-term Treatment-free Follow-up
NCT05677451
Recruiting
The purpose of this trial is: 1. to assess the efficacy, pharmacokinetics, and safety of remibrutinib vs. placebo in adolescents from 12 to \< 18 years of age suffering from chronic spontaneous urticaria inadequately controlled by H1-antihistamines 2. to collect long-term efficacy, safety and tolerability data on remibrutinib in adolescents after having completed 24 weeks of treatment 3. to collect safety data in this population for up to three years after the last dose of study treatment
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
06/27/2025
Locations: Kern Research, Bakersfield, California
Conditions: Chronic Spontaneous Urticaria
Register for Updates
A Study to Evaluate XEN1101 as Adjunctive Therapy in Primary Generalized Tonic-Clonic Seizures
NCT05667142
Recruiting
This is a Phase 3, multicenter, randomized, double-blind, placebo-controlled study to evaluate the clinical efficacy, safety, and tolerability of XEN1101 administered as adjunctive treatment in primary generalized tonic-clonic seizures (PGTCS).
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/27/2025
Locations: Brain Science Research Institute, Los Angeles, California
Conditions: Primary Generalized Tonic-Clonic Seizures
Register for Updates
Life's End Benefits of cannaBidiol and tetrahYdrocannabinol
NCT05644262
Recruiting
This is a multicenter randomized double-blind placebo-controlled Phase 2 study of an oral combination of tetrahydrocannabinol (THC) and cannabidiol (CBD) compared to placebo over 12 weeks. This study is designed to test the hypothesis that treatment with an oral combination of THC/CBD will reduce agitation hospice care-eligible patients with agitation and dementia as measured by the Cohen Mansfield Agitation Inventory (CMAI) when compared to placebo at 2 weeks. This study will enroll approximat... Read More
Gender:
ALL
Ages:
40 years and above
Trial Updated:
06/27/2025
Locations: The Neuron Clinic, Chula Vista, California
Conditions: Agitation, Dementia
Register for Updates
Phase 3 Study to Evaluate Two Regimens of Ianalumab on Top of Standard-of-care Therapy in Patients With Systemic Lupus Erythematosus (SIRIUS-SLE 1)
NCT05639114
Recruiting
The trial will evaluate efficacy, safety and tolerability of two regimens of ianalumab compared to placebo, given as monthly or quarterly subcutaneous (s.c.) injection on top of standard-of-care (SoC) treatment in participants with active systemic lupus erythematosus (SLE).
Gender:
ALL
Ages:
Between 12 years and 100 years
Trial Updated:
06/27/2025
Locations: Providence Medical Center, Burbank, California
Conditions: Systemic Lupus Erythematosus
Register for Updates
Study of CHS-114 in Participants With Advanced Solid Tumors
NCT05635643
Recruiting
This is a Phase 1, open-label, first-in-human, dose-escalation and expansion study of CHS-114, a monoclonal antibody that targets CCR8, as a monotherapy in patients with solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Hoag Memorial Hospital, Newport Beach, California
Conditions: Advanced Solid Tumor, Head and Neck Squamous Cell Carcinoma
Register for Updates
A Study to Investigate the Pharmacokinetics (PK) and Safety and to Provide Proof of Mechanism of Alogabat in Children and Adolescents Aged 5-17 Years With Angelman Syndrome (AS) With Deletion Genotype.
NCT05630066
Recruiting
This is a two-part, Phase IIa, multicenter, 12-week, open-label study. Up to 56 participants with deletion AS aged 5-17 years (inclusive) will be enrolled in the study.
Gender:
ALL
Ages:
Between 5 years and 17 years
Trial Updated:
06/27/2025
Locations: Rady Children's Hospital - San Diego, San Diego, California
Conditions: Angelman Syndrome
Register for Updates
Phase 3 Study to Evaluate Ianalumab on Top of Standard-of-care Therapy in Patients With Systemic Lupus Erythematosus (SIRIUS-SLE 2)
NCT05624749
Recruiting
The trial will evaluate efficacy, safety and tolerability of ianalumab compared to placebo, given as monthly subcutaneous (s.c.) injection on top of standard-of-care (SoC) treatment in participants with active systemic lupus erythematosus (SLE).
Gender:
ALL
Ages:
Between 12 years and 100 years
Trial Updated:
06/27/2025
Locations: University of Calif Irvine Med Cntr, Irvine, California
Conditions: Systemic Lupus Erythematosus
Register for Updates
Optimizing HBV Care Cascade Among Foreign-Born in the United States (FOCUS-HBV Study)
NCT05621304
Recruiting
Background: People who were born outside of the country are the largest group of adults infected with chronic hepatitis B virus (HBV) in the US. HBV affects the liver. If not treated, HBV infection can lead to serious liver disease, including cancer. One recent study showed that only 35% of foreign-born US adults were aware of their HBV infections. Foreign-born US adults may also have trouble getting proper care after they are diagnosed with HBV. In one small survey, language, cultural, and fin... Read More
Gender:
ALL
Ages:
Between 18 years and 100 years
Trial Updated:
06/27/2025
Locations: University of Southern California, Los Angeles, California
Conditions: Chronic Hepatitis B Virus (Hbv)
Register for Updates
A Randomized Study of XEN1101 Versus Placebo in Focal-Onset Seizures
NCT05614063
Recruiting
The X-TOLE2 Phase 3 clinical trial is a randomized, double-blind, placebo-controlled study that will evaluate the clinical efficacy, safety and tolerability of XEN1101 administered as adjunctive therapy in focal-onset seizures.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: Brain Science Research Institute, Los Angeles, California
Conditions: Focal Onset Seizures
Register for Updates