The state of California currently has 20 active clinical trials seeking participants for Crohn's Disease research studies. These trials are conducted in various cities, including Los Angeles, San Francisco, San Diego and Sacramento.
A Master Protocol (AMAZ): A Study of Mirikizumab (LY3074828) in Pediatric Participants With Ulcerative Colitis or Crohn's Disease (SHINE-ON)
Recruiting
The main purpose of this study is to evaluate the long-term efficacy of mirikizumab in pediatric participants with ulcerative colitis (UC) or Crohn's disease (CD). The study will last about 172 weeks and may include up to 44 visits. Additional treatment may be available to participants via a Continued Access Period.
Gender:
ALL
Ages:
Between 2 years and 19 years
Trial Updated:
08/21/2025
Locations: UCSF Medical Center at Mission Bay, San Francisco, California
Conditions: Ulcerative Colitis, Ulcerative Colitis Chronic, Inflammatory Bowel Diseases, Crohn's Disease
Unhide® Project: A Digital Health Platform to Collect Lifestyle Data for Brain Inflammation Research
Recruiting
The unhide® Project is a non-interventional, longitudinal research study designed to establish a secure data repository of demographic, health, and lifestyle information from individuals with brain inflammation and related neuroinflammatory conditions. Participants in the United States aged 2 years and older will provide self-reported health data, biometrics, and symptom diaries through the MyDataHelps™ app (branded as unhide® for this study). The goal is to create comprehensive longitudinal pro... Read More
Gender:
ALL
Ages:
2 years and above
Trial Updated:
08/18/2025
Locations: Brain Inflammation Collaborative, Delafield, Wisconsin
Conditions: ME/CFS, Post-Acute COVID-19 Syndrome, Rheumatic Arthritis, Juvenile Rheumatoid Arthritis (JRA), Psoriatic Arthritis (PsA), Ankylosing Spondylitis (AS), Autoimmune Encephalitis, Bipolar Disorder (BPD), Celiac Disease, Celiac Disease in Children, Chronic Lyme Disease, Post-treatment Lyme Disease Syndrome, Crohn's Disease, Dysautonomia, Anorexia Nervosa, Bulimia Nervosa, ARFID, Avoidant / Restrictive Food Intake Disorder, Ehlers Danlos Syndrome, Endometriosis, Fibromyalgia (FM), Long COVID, Lupus, Major Depression, Migraines, Mast Cell Activation Syndrome, Multiple Sclerosis, Myalgic Encephalomyelitis (ME), Myasthenia Gravis, Generalized, Myasthenia Gravis in Children, Narcolepsy, Obsessive Compulsive Disorder (OCD), PANDAS, Pediatric Acute-onset Neuropsychiatric Syndrome (PANS), POTS - Postural Orthostatic Tachycardia Syndrome, General Anxiety Disorder, Social Anxiety Disorder, PTSD - Post Traumatic Stress Disorder, Psoriasis, Traumatic Brain Injury, Tourette's Syndrome, Inflammatory Bowel Disease (IBD), Autoimmune Diseases, Neurological Diseases or Conditions, Psychiatric Disorder, Sjogren's Syndrome, Ulcerative Colitis and Crohn's Disease
Transmural Healing and Disease-Modifying Effect of Guselkumab in Crohn's Disease Patients
Recruiting
The purpose of this study is to evaluate the efficacy of guselkumab in healing of all layers of the digestive tract (transmural healing) with the help of a score called Magnetic Resonance Index of Activity (MaRIA) based on a scan at Week 48.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Center for Colitis and Crohns Disease University of California, San Francisco, California
Conditions: Crohn's Disease
Study of Targeted Therapies for the Treatment of Adult Participants With Moderate to Severe Crohn's Disease
Recruiting
Crohn's disease (CD) is a long-lasting disease that causes severe inflammation (redness, swelling), in the digestive tract, most frequently affecting the bowels. It can cause many different symptoms including belly pain, diarrhea, tiredness, and weight loss. Treatments are available but do not work the same for all patients or may stop working over time. This study will evaluate the effectiveness and adverse events of targeted therapies (TaTs) for adult participants with moderate to severe CD.... Read More
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/18/2025
Locations: Southern California Res. Ctr /ID# 265549, Coronado, California +3 locations
Conditions: Crohn's Disease
A Study to Evaluate the Efficacy and Safety of Tulisokibart (MK-7240) in Participants With Moderate to Severe Crohn's Disease (MK-7240-008)
Recruiting
The purpose of this protocol is to evaluate the efficacy and safety of tulisokibart in participants with moderately to severely active Crohn's disease. Study 1's primary hypotheses are that at least 1 tulisokibart dose level is superior to placebo in the proportion of participants achieving clinical remission per Crohn's Disease Activity Index score (\<150, US/FDA) or per stool frequency and abdominal pain score (EU/EMA) and in the proportion of participants achieving endoscopic response at Week... Read More
Gender:
ALL
Ages:
Between 16 years and 80 years
Trial Updated:
08/13/2025
Locations: Clinnova Research ( Site 5110), Anaheim, California +7 locations
Conditions: Crohn's Disease
Crohn's Disease: Efficacy, Safety, and Pharmacokinetics of Upadacitinib in Pediatric Subjects With Moderately to Severely Active Crohn's Disease
Recruiting
Crohn's disease (CD) is a long-lasting disease that causes severe inflammation (redness, swelling), in the digestive tract, most often affecting the bowels. It can cause many different symptoms including abdominal pain, diarrhea, tiredness, and weight loss. This study will assess how safe and effective oral Upadacitinib is in treating moderately to severely active Crohn's Disease in pediatric participants aged 2 to 18 years old who have had inadequate response, loss of response, intolerance, or... Read More
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
08/11/2025
Locations: UCSF Benioff Children's Hospital - Oakland /ID# 262217, Oakland, California
Conditions: Crohn's Disease
A Study to Investigate Efficacy and Safety of SAR442970 in Patients With Crohn's Disease
Recruiting
This is a phase 2b, randomized, double-blind, 3-arm study for the treatment of Crohn's disease. The primary objective of this study is to assess the efficacy of different doses of SAR442970 compared with placebo in participants with moderate to severe Crohn's disease. The total study duration is up to 168 weeks, with a treatment period of up to 158 weeks including an open-label (OL) long-term extension (LTE) period of up to 104 weeks for eligible participants
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/05/2025
Locations: Gastro Care Institute - Site Number: 8400001, Lancaster, California
Conditions: Crohn's Disease
A Phase 2 Study to Evaluate MORF-057 in Adults With Moderately to Severely Active Crohn's Disease
Recruiting
This is a Phase 2, randomized, double-blind, placebo-controlled, multicenter study to evaluate the efficacy and safety of 2 active dose regimens of MORF-057 in adult study participants with moderately to severely active Crohn's disease (CD).
Gender:
ALL
Ages:
Between 18 years and 85 years
Trial Updated:
07/29/2025
Locations: Gastro Care Institute, Lancaster, California
Conditions: Inflammatory Bowel Diseases, Crohn's Disease
Mirikizumab and Tirzepatide Administered in Adult Participants With Moderately to Severely Active Crohn's Disease and Obesity or Overweight
Recruiting
The main purpose of this study is to evaluate the efficacy and safety of mirikizumab and placebo compared with mirikizumab and concomitantly administered tirzepatide in adult participants with moderately to severely active CD and obesity, or overweight. The maximum duration of this study is up to 61 weeks.
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/22/2025
Locations: Smart Cures Clinical Research, Anaheim, California +3 locations
Conditions: Crohn's Disease, Obesity or Overweight
A Study of Vedolizumab Intravenous (IV) and Adalimumab or Vedolizumab and Ustekinumab in Adults With Crohn's Disease
Recruiting
The main aim of this study is to learn about the effect of treatment with vedolizumab IV (vedolizumab) together with adalimumab or vedolizumab (VDZ) together with ustekinumab (UST) in adults with moderate to severe Crohn's Disease, and the effect of treatment with vedolizumab alone, after the dual targeted treatment. The study is conducted in two parts. In Part A, participants will receive the dual targeted treatment (vedolizumab together with either adalimumab or ustekinumab). In part B, parti... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/10/2025
Locations: University of California San Diego Health (UCSD), La Jolla, California +2 locations
Conditions: Crohn's Disease
A Study of Mirikizumab (LY3074828) in Pediatric Participants With Crohn's Disease
Recruiting
Study participants will be screened during the platform study and randomly assigned to receive mirikizumab or another intervention. The purpose of the mirikizumab study is to evaluate efficacy, safety, tolerability, and how well mirikizumab absorbs into the body of pediatric participants with Crohn's disease. Study periods for the intervention-specific appendix (ISA) will be as follows: * A 12-week induction period * A maintenance period from Week 12 to Week 52, and * A safety follow-up period... Read More
Gender:
ALL
Ages:
Between 2 years and 17 years
Trial Updated:
07/07/2025
Locations: University of California San Diego, La Jolla, California +1 locations
Conditions: Crohn's Disease
Phase IIa Study Evaluating AZD7798 in Crohn's Disease
Recruiting
This is a randomised, double-blind, parallel group, placebo-controlled Phase IIa study designed to evaluate the efficacy and safety of AZD7798 in participants with moderate to severe Crohn's disease.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
06/24/2025
Locations: Research Site, Escondido, California +2 locations
Conditions: Moderate to Severe Crohn's Disease