California is currently home to 5626 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.
Study Of Oral Elagolix Tablets In Combination With Combined Oral Contraceptive Capsules/Tablets To Assess Dysmenorrhea Response In Adult Female Participants With Endometriosis And Associated Moderate To Severe Pain
Recruiting
Endometriosis is a painful disorder of the uterus affecting 6-10% of women of childbearing age. Endometriosis affects daily activities, social relationships, sexuality and sexual activity, and mental health. This study will evaluate how well elagolix in combination with combined oral contraceptives (COC) works within the body and/or how safe it is compared to placebo (does not contain treatment drug). This study will assess the dysmenorrhea (painful periods) response in participants with endomet... Read More
Gender:
FEMALE
Ages:
Between 18 years and 49 years
Trial Updated:
07/18/2025
Locations: Diagnamics Inc. /ID# 225385, Encinitas, California
Conditions: Endometriosis
Belimumab With Rituximab for Primary Membranous Nephropathy
Recruiting
The primary objective of this study is to evaluate the effectiveness of belimumab and intravenous rituximab co-administration at inducing a complete or partial remission (CR or PR) compared to rituximab alone in participants with primary membranous nephropathy. Background: Primary membranous nephropathy (MN) is among the most common causes of nephrotic syndrome in adults. MN affects individuals of all ages and races. The peak incidence of MN is in the fifth decade of life. Primary MN is recog... Read More
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
07/18/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Membranous Nephropathy, Nephrotic Syndrome
Safety, Tolerability, and Immunogenicity of mRNA-4157 Alone and in Combination in Participants With Solid Tumors
Recruiting
The purpose of this study is to assess the safety, tolerability, and immunogenicity of mRNA-4157 alone and in combination in participants with solid tumors.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Angeles Clinic and Research Institute, Los Angeles, California
Conditions: Solid Tumors
Analysis of Headache Chronification With Imaging, Deep Phenotyping, and Proteomics
Recruiting
Study is aimed at determining why some patients with episodic headache proceed to chronic daily or near daily headaches. The Investigators seek to discover differences in brain anatomy and function, composition of cerebrospinal fluid, blood products, genetics, and patient phenotypes that might help explain this process.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/18/2025
Locations: Stanford University School of Medicine, Stanford, California
Conditions: Chronic Daily Headache, Chronic Migraine
Breast Cancer Screening Adherence for Women at Moderate Risk for Breast Cancer
Recruiting
This study assesses breast cancer screening adherence for women at moderately increased risk for developing breast cancer based on gene mutation status or empiric risk model estimates. It also seeks to determine facilitators and barriers to screening.
Gender:
FEMALE
Ages:
Between 30 years and 75 years
Trial Updated:
07/17/2025
Locations: Los Angeles General Medical Center, Los Angeles, California
Conditions: Breast Carcinoma
A First-in-human Study to Evaluate the Safety and Tolerability of HB-2121 as a Diagnostic for Celiac Disease
Recruiting
The goal of this clinical trial is to learn about the safety of a single dose of HB-2121 in adults. It will also look at how the body processes the drug. The main questions it aims to answer are: * What side effects do participants have after receiving HB-2121? * How much HB-2121 is in the blood over time? Researchers will follow participants for 30 days after receiving HB-2121 to understand how the drug behaves in the body and how safe it is. Participants will: * Receive one oral dose of HB... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Stanford University, Stanford, California
Conditions: Celiac Disease, Healthy
EXOMIND (BTL-699-2) for the Improvement of Sleep Quality and Reduction of Stress
Recruiting
The goal of this clinical trial is to evaluate whether the treatment with BTL-699-2 device is able to improve sleep quality and reduce stress in adults above the age of 22 years. The main questions it aims to answer are: Does the treatment with BTL-699-2 device improve sleep quality? Does the treatment with BTL-699-2 device reduce stress? Participants will be asked to: * Undergo six treatments * Complete the Pittsburgh Sleep Quality Index * Complete the Perceived Stress Scale Questionnaire *... Read More
Gender:
ALL
Ages:
22 years and above
Trial Updated:
07/17/2025
Locations: AntiAging and Wellness, Chula Vista, California
Conditions: Sleep Quality, Stress Reduction
A Study to Investigate Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and Immunogenicity of AZD1613 in Healthy Participants.
Recruiting
The purpose of the study is to assess the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and immunogenicity of AZD1613 in healthy participants, including Japanese and Chinese descent.
Gender:
ALL
Ages:
Between 18 years and 50 years
Trial Updated:
07/17/2025
Locations: Research Site, Glendale, California
Conditions: Healthy
DESTINY-Endometrial01: A Phase III Study of Trastuzumab Deruxtecan Plus Rilvegostomig or Pembrolizumab as First-Line Treatment of HER2-Expressing (IHC 3+/2+), Mismatch Repair Proficient (pMMR) Endometrial Cancer
Recruiting
DESTINY-Endometrial01 will investigate the efficacy of first-line T-DXd + rilvegostomig (Arm A) and/or T-DXd+ pembrolizumab (Arm B) when compared to chemotherapy (carboplatin + paclitaxel) + pembrolizumab (Arm C), by assessment of progression free survival (PFS), as assessed by BICR, in participants with HER2-expressing (IHC 3+/2+), pMMR, primary advanced (Stage III/IV) or recurrent EC.
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Research Site, La Jolla, California
Conditions: Endometrial Cancer
A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and Type 2 Diabetes
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: Norcal Endocrinology & Internal Medicine, San Ramon, California
Conditions: Obesity, Overweight, Type 2 Diabetes
A Study of Orforglipron (LY3502970) in Participants With Obesity or Overweight and at Least One Weight-Related Comorbidity
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: Norcal Endocrinology & Internal Medicine, San Ramon, California
Conditions: Obesity, Overweight
A Long-Term Study of Tirzepatide (LY3298176) in Adults With Type 1 Diabetes and Obesity or Overweight
Recruiting
The main purpose of this study is to find out how well and how safely tirzepatide works long-term in adults who have type 1 diabetes and obesity or overweight. Participation in the study will last about 20 months.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/17/2025
Locations: Kaiser Permanente Bonita Medical Offices, Bonita, California
Conditions: Type 1 Diabetes, Obesity, Overweight