Clinical trials · California
Crohn’s disease clinical trials in California
We’re tracking 43 recruiting crohn’s disease studies with a site in California — including Phase 1, Phase 2, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07697456RecruitingPhase 2
Study of advanced therapies for Crohn's or ulcerative colitis
This study tests advanced treatments for people with moderate to severe Crohn's disease or ulcerative colitis who haven't responded to at least one previous therapy. It aims to find better options for managing these conditions.
Anaheim, CaliforniaAges 18–75 - NCT06560021Enrolling by invitation
Random biopsies in inflammatory bowel disease surveillance
This trial looks at whether taking random biopsies during a routine colonoscopy is helpful for people with inflammatory bowel disease (IBD) who are at risk for colon cancer. It aims to understand if random biopsies can detect early signs of cancer or pre-cancer.
San Diego, CaliforniaAges 18 years+ - NCT06430801RecruitingPhase 3
Study of tulisokibart for moderate to severe Crohn's disease
This trial tests a new medicine called tulisokibart for people with moderate to severe Crohn's disease. The medicine may help reduce inflammation and improve symptoms. It is for those who have not had success with other treatments.
Anaheim, CaliforniaAges 16–80 - NCT06405087RecruitingPhase 3
Long-term study of vedolizumab for children with IBD
This study is for children and teenagers with ulcerative colitis or Crohn's disease who have already completed a previous vedolizumab study and are doing well. It will look at the long-term safety and effectiveness of continuing vedolizumab treatment.
Loma Linda, CaliforniaAges 2–17 - NCT05442567RecruitingPhase 3
Vedolizumab study for kids with ulcerative colitis or Crohn’s
This Phase 3 study tests whether vedolizumab can help children with ulcerative colitis (UC) or Crohn’s disease (CD) who improved on earlier treatment. It focuses on kids who can stay off steroid medicines and follow study visits and safety rules.
Los Angeles, CaliforniaAges 2 years+ - NCT06819878RecruitingPhase 3
Afimkibart for moderate to severe Crohn's disease
This study tests an experimental drug called afimkibart for people with moderate to severe Crohn's disease who haven't responded well to other treatments. The goal is to see if the drug can help control symptoms and reduce inflammation over time.
Garden Grove, CaliforniaAges 16–80 - NCT06819891RecruitingPhase 3
Study of afimkibart for active Crohn's disease
This trial tests a new medicine called afimkibart for people with moderately to severely active Crohn's disease that has not responded well to other treatments. It aims to see if the medicine can safely reduce inflammation and improve symptoms.
Newport Beach, CaliforniaAges 16–80 - NCT06456593RecruitingPhase 2
Obefazimod for moderate to severe Crohn's disease
This trial tests an experimental oral medication called obefazimod for people with moderate to severe Crohn's disease. It aims to see if the drug can reduce inflammation and improve symptoms when other treatments have not worked well.
Irvine, CaliforniaAges 18–75 - NCT06424769Enrolling by invitation
Managing Inflammatory Bowel Disease with Text Message Surveys
This study aims to improve care and reduce health gaps for people with inflammatory bowel disease using text-message surveys to track symptoms and guide better disease management.
San Francisco, CaliforniaAges 13 years+ - NCT06583395Enrolling by invitation
Meditation retreat study with fitness tracker
This trial studies people attending a 7-day meditation retreat to see how meditation affects well-being. You will wear a fitness tracker and answer surveys.
Palm Desert, CaliforniaAges 21 years+ - NCT06937099RecruitingPhase 3
Testing two drugs for Crohn's with weight issues
This trial tests two study drugs, mirikizumab and tirzepatide, in people with moderate to severe Crohn's disease who also have overweight or obesity. The goal is to see if these treatments can help control Crohn's symptoms and inflammation.
Anaheim, CaliforniaAges 18–70 - NCT02791854Enrolling by invitation
Improving Care for Adults With Crohn’s or Ulcerative Colitis
This trial looks at ways to improve care for adults living with inflammatory bowel disease, including Crohn’s disease and ulcerative colitis. You may be invited if your clinic is part of an inflammatory bowel disease care network called IBD Qorus.
Los Angeles, CaliforniaAges 18–99 - NCT03816345RecruitingPhase 1
Nivolumab for advanced cancer with autoimmune disease
This trial tests whether the immunotherapy drug nivolumab can safely treat advanced cancer in people who also have an autoimmune disease like rheumatoid arthritis, lupus, or multiple sclerosis. It aims to find out if the drug may help control cancer while managing their autoimmune condition.
Palo Alto, CaliforniaAges 18 years+ - NCT06581328RecruitingPhase 4
Study of vedolizumab for ulcerative colitis or Crohn's disease
This study tests a medication called vedolizumab for people with moderate to severe ulcerative colitis or Crohn's disease. The goal is to see how well it works in a regular community setting, and it may help control symptoms if other treatments haven't worked.
Escondido, CaliforniaAges 18–80 - NCT06710067Recruiting
Urine chemicals for diagnosing disease
This study looks at chemicals in urine to help find new ways to diagnose diseases. You give one urine sample and answer a few questions—no treatment or long-term follow-up needed.
Encinitas, CaliforniaAges 18 years+ - NCT02103361Recruiting
Pregnancy registry for Stelara or Tremfya exposure
This study is a pregnancy exposure registry. It collects information to better understand pregnancy outcomes after exposure to Stelara or Tremfya (medicines used for autoimmune diseases).
La Jolla, CaliforniaAges Any age - NCT06495658Recruiting
Prebiotics for ulcerative colitis symptoms
This trial tests whether a prebiotic supplement can improve symptoms of ulcerative colitis. It may be a good option for people with active symptoms who are already on stable medications.
Los Angeles, CaliforniaAges 18–85 - NCT05660746RecruitingPhase 2/Phase 3
Infliximab dose tailored to control Crohn’s inflammation
This trial tests a more precise way to start infliximab (a Crohn’s medicine) and adjust dosing based on how your body responds. It aims to better control Crohn’s inflammation early and keep it under control.
Palo Alto, CaliforniaAges 6–22 - NCT05230173Recruiting
Treat to endoscopic remission in inflammatory bowel disease
This study tests whether switching to a different treatment for inflammatory bowel disease (IBD) can achieve healing of the gut lining. It is for people whose symptoms are under control but who still have significant inflammation in their bowel.
Irvine, CaliforniaAges 18 years+
Crohn’s disease trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting crohn’s disease studies listed above.
- Cedars-Sinai Medical Center · 3 studies
- Om Research LLC · 3 studies
- United Medical Doctors · 3 studies
- Clinnova Research · 2 studies
- Hoag Hospital · 2 studies
- Southern California Research Center · 2 studies
- UC San Diego Moores Cancer Center · 2 studies
- University of California San Diego · 2 studies
What taking part in a crohn’s disease study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Crohn’s disease trials in other states
Common questions
- Are there crohn’s disease clinical trials in California?
- Yes. We're currently tracking 43 recruiting crohn’s disease studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a crohn’s disease study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a crohn’s disease trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New crohn’s disease studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.