California is currently home to 5617 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 Study to Evaluate the Efficacy and Safety of KarXT for the Treatment of Manic Episodes in Bipolar-I Disorder
Recruiting
The purpose of this study is to evaluate the efficacy and safety of KarXT for the treatment of manic episodes in Bipolar-I Disorder
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/29/2025
Locations: Local Institution - 0005, Anaheim, California
Conditions: Bipolar-I Disorder With Mania or Mania With Mixed Features
A Study to Assess the Long-term Safety of KarXT for the Treatment of Manic Episodes in Bipolar-I Disorder (BALSAM-3)
Recruiting
This is a phase 3, open-label extension study to assess the long-term safety of KarXT for the treatment of mania or mania with mixed features in Bipolar-I disorder (BP-I) The primary objective of the study is to evaluate the long-term safety and tolerability of KarXT in the treatment of participants with mania or mania with mixed features associated with BP-I.
Gender:
ALL
Ages:
Between 18 years and 65 years
Trial Updated:
07/29/2025
Locations: Local Institution - 0027, Anaheim, California
Conditions: Bipolar Disorder Type I With Mania
A Study of Efimosfermin Alfa in Participants With Biopsy-confirmed Cirrhosis (Compensated) MASH
Recruiting
The purpose of this study is to evaluate the safety, tolerability, preliminary efficacy, and pharmacokinetics (PK) of efimosfermin in participants with metabolic dysfunction associated steatohepatitis (MASH) and compensated cirrhosis consistent with stage F4 fibrosis.
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
07/29/2025
Locations: Fresno Clinical Research Center, Fresno, California
Conditions: Metabolic Dysfunction-Associated Steatohepatitis
A Trial Evaluating BJT-778 vs Delayed Treatment for the Treatment of Chronic Hepatitis Delta Infection
Recruiting
This is a Phase 2b/3 study designed to evaluate the safety and efficacy of chronic treatment with brelovitug (a.k.a BJT-778; BTG) for chronic hepatitis delta virus (HDV) infection. The comparator in this study will be 24-weeks of delayed treatment. During the 24-weeks of delayed treatment, participants will complete the same visits and assessments as those randomized to initiate brelovitug immediately. At the completion of 24-week delayed treatment period, all participants will start treatment w... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Garden Grove, Garden Grove, California
Conditions: Chronic Hepatitis D Infection
A Study to Assess the Change in Disease Activity in Adult Participants With Moderate to Severe Ulcerative Colitis Treated With Risankizumab Compared to Vedolizumab
Recruiting
Ulcerative colitis (UC) is a type of inflammatory bowel disease that causes inflammation and bleeding from the lining of the rectum and colon (large intestine).This study will evaluate how safe and effective risankizumab is compared to vedolizumab in treating adult participants with moderate to severe UC who are naive to targeted therapies (TaTs). Risankizumab and vedolizumab are approved medications for moderate to severe UC in multiple countries. Participants who meet the eligibility criteria... Read More
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
07/29/2025
Locations: Gastro Care Institute /ID# 274873, Lancaster, California
Conditions: Ulcerative Colitis
Study of Targeted Therapies for the Treatment of Adult Participants With Active Psoriatic Arthritis
Recruiting
Psoriatic arthritis (PsA) is a type of arthritis that happens when the body's immune system attacks healthy cells and tissues causing joint pain, stiffness, and swelling. Symptoms can get worse and go away for periods of time. This study will evaluate the efficacy and safety of targeted therapies through a series of substudies, for the treatment of active psoriatic arthritis and to assess the changes in disease symptoms. The therapies being assessed in this sub-study are risankizumab and lutiki... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Newport Huntington Medical Group /ID# 272764, Huntington Beach, California
Conditions: Psoriatic Arthritis
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
Recruiting
Glaucoma is the second most common cause of blindness in the world, second only to cataracts. This study will assess how safe and effective a glaucoma gel stent is when implanted using the ab interno (inside the eye) and ab externo (outside the eye) approach. Adverse events and intraocular pressure will be assessed. XEN63 is an investigational device for the treatment of intraocular pressure (IOP) in patients with glaucoma when both medical and conventional surgical treatments have failed (for... Read More
Gender:
ALL
Ages:
45 years and above
Trial Updated:
07/29/2025
Locations: LA Glaucoma Group /ID# 268444, Culver City, California
Conditions: Primary Open Angle Glaucoma
Tranexamic Acid for Second Trimester Dilation and Evacuation and Bleeding Outcomes
Recruiting
Although procedural abortion in the second trimester is extremely safe, hemorrhage is one of the leading causes of morbidity and mortality. Tranexamic acid (TXA) is used commonly in obstetrics to prevent or manage intrapartum or postpartum hemorrhage and has been associated with decreased mortality and decreased blood loss at the time of birth. Some guidelines are recommending the use of TXA for both the prevention and management of bleeding for abortion care. However, there are currently no pub... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: University of California San Diego, San Diego, California
Conditions: Abortion, Dilation and Evacuation, Hemorrhage, Prophylactic Tranexamic Acid Use, Blood Loss
Extension Study of Sotatercept in People With Pulmonary Hypertension (MK-7962-023)
Recruiting
Researchers are looking for new ways to treat people with a type of pulmonary hypertension called combined postcapillary and precapillary pulmonary hypertension (Cpc-PH). This study focuses on Cpc-PH that is caused by heart failure with preserved ejection fraction (HFpEF). Researchers want to know if the study treatment, sotatercept, can treat people with Cpc-PH caused by HFpEF. This is an extension study, which means people who took part in a certain study on sotatercept for Cpc-PH (called a p... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Jeffrey S. Sager, MD Medical Corporation ( Site 1060), Santa Barbara, California
Conditions: Hypertension, Pulmonary
A Study of CLSP-1025 in Adult Patients With Solid Tumors That Harbor the p53 R175H Mutation
Recruiting
Phase 1 dose escalation and expansion study of CLSP-1025, a first-in-class HLA-A\*02:01 specific T cell engager (TCE) targeting solid tumors that harbor the p53 R175H mutation.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: USC - Norris Comprehensive Cancer Center, Los Angeles, California
Conditions: Advanced Solid Tumor, Unresectable Solid Tumor, Metastatic Solid Tumor, Colorectal Adenocarcinoma, Pancreatic Adenocarcinoma, Lung Cancer, Ovarian Cancer, Breast Cancer, Head and Neck Squamous Cell Carcinoma, Prostate Cancer, Bladder Cancer
A Study of an FGFR2/3 Inhibitor (CGT4859) in Patients With Cholangiocarcinoma and Other Advanced Solid Tumors
Recruiting
This is an open-label, phase 1/2 study evaluating the safety, tolerability, pharmacokinetic (what the body does to the drug), pharmacodynamic (what the drug does to the body), and antitumor activity of CGT4859 in adult participants with intrahepatic cholangiocarcinoma (iCCA) or other advanced solid tumors with FGFR2 and/or FGFR3 genetic alternations.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Stanford Cancer Institute, Palo Alto, California
Conditions: Intrahepatic Cholangiocarcinoma (Icc), Cholangiocarcinoma, Other Solid Tumors, Adult, FGFR2 Gene Fusion/Rearrangement, FGFR2 Gene Amplification, FGFR2 Gene Short Variants, FGFR3 Gene Fusion/Rearrangement, FGFR3 Gene Amplification, FGFR3 Gene Short Variants, FGFR2 Genetic Alterations, FGFR3 Genetic Alterations, Advanced Solid Tumors
A Study to Evaluate the Adverse Events, Efficacy, and Optimal Dose of Intravenous (IV) Telisotuzumab Adizutecan in Combination With IV Budigalimab in Adult Participants With Advanced or Metastatic Non-Squamous NSCLC With No Prior Treatment for Advanced Disease, and No Actionable Genomic Alterations
Recruiting
Non small cell lung carcinoma (NSCLC) is the most frequently occurring histologic subtype of lung cancer and is the leading cause of cancer-related deaths worldwide. The purpose of this study is to assess adverse events and change in disease activity when Telisotuzumab Adizutecan (ABBV-400) is given in combination with a programmed cell death receptor 1 (PD1) inhibitor (budigalimab) to adult participants to treat NSCLC. ABBV-400 and budigalimab are investigational drugs being developed for the... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/29/2025
Locations: Providence - St. Jude Medical Center /ID# 271414, Fullerton, California
Conditions: Non Small Cell Lung Carcinoma