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Type 1 Diabetes clinical trials in California
37 studies for Type 1 Diabetes are looking for participants at sites in California.
Cities in California
- San Francisco14 studies
- San Diego6 studies
- Los Angeles6 studies
- Mountain View4 studies
- Baldwin Park4 studies
- Concord3 studies
Starting Technology in At Risk Type 1 Diabetes Study
- UCLA, Santa Monica
- Olive View-UCLA Medical Center, Sylmar
- Harbor-UCLA Medical Center, Torrance
Recruiting
Ages 18 and older · All sexes · Updated Sep 25, 2026 · NCT06453928App-Based Certified Diabetes Education Therapy (AB-CDE)
- University of Southern California, Los Angeles
Recruiting
Ages 18 and older · All sexes · Updated Sep 23, 2026 · NCT07282639A Study of Baricitinib (LY3009104) for the Delay of Stage 3 Type 1 Diabetes in At-Risk Children and Adults
- Sansum Diabetes Research Institute, Santa Barbara
RecruitingPhase 3
Ages 1 to 35 · All sexes · Updated Sep 22, 2026 · NCT07222137Type 1 Diabetes Extension Study
- UCSF School of Medicine, San Francisco
- Stanford University, Stanford
RecruitingObservational study
Ages 8 to 35 · All sexes · Updated Sep 18, 2026 · NCT02734277A Study to Investigate Efficacy and Safety of Teplizumab Compared With Placebo in Participants 1 to 25 Years of Age With Stage 3 Type 1 Diabetes
- University of California San Francisco - Mission Bay- Site Number : 8400011, San Francisco
RecruitingPhase 3
Ages 1 to 25 · All sexes · Updated Sep 14, 2026 · NCT07088068CNP-103 in Adolescent and Adult Subjects Ages 12-35 With Recently Diagnosed (Within 6 Months) Stage 3 Type 1 Diabetes (T1D)
- Hoag Memorial Hospital, Newport Beach
- Rady Children's Hospital San Diego, San Diego
- Diablo Clinical Research, Walnut Creek
RecruitingPhase 1/2
Ages 12 to 35 · All sexes · Updated Sep 11, 2026 · NCT06783309Rezpegaldesleukin (NKTR-358) in New Onset Type 1 Diabetes Mellitus
- University of California San Francisco, San Francisco
RecruitingPhase 2
Ages 8 to 45 · All sexes · Updated Sep 8, 2026 · NCT07142252C-Carbs: A CGM-guided Approach to Teaching Carb Awareness
- University of California Los Angeles, Los Angeles
Recruiting
Ages 18 and older · All sexes · Updated Sep 8, 2026 · NCT07807280The iLet Experience Study
- Beta Bionics, Irvine
RecruitingObservational study
Ages 6 and older · All sexes · Updated Sep 8, 2026 · NCT06891898A Randomized Phase 1/2 Trial of Low Dose Anti-thymocyte Globulin (ATG) With Subsequent Adalimumab or Verapamil in New Onset Type 1 Diabetes
- UCSF, San Francisco
RecruitingPhase 1/2
Ages 9 to 20 · All sexes · Updated Sep 2, 2026 · NCT07061574A Safety, Tolerability, and Efficacy Study of VX-880 and VX-017 in Participants With Type 1 Diabetes
- City of Hope, Duarte
- University of California San Francisco, San Francisco
RecruitingPhase 3
Ages 18 to 65 · All sexes · Updated Sep 1, 2026 · NCT04786262HLA Demographics Study in Adults With Type 1 Diabetes
- University of California, San Francisco, San Francisco
RecruitingObservational study
Ages 18 to 55 · All sexes · Updated Aug 28, 2026 · NCT06860516SAFety and Efficacy of Human Anti-thymocyte ImmunoGlobUlin SAB-142 ARresting Progression of Type 1 Diabetes
- University of California San Francisco Benioff Children's Hospital, San Francisco
RecruitingPhase 2
Ages 5 to 40 · All sexes · Updated Aug 24, 2026 · NCT07187531INHALE-1st: Afrezza® For Youth With Newly-Diagnosed Type 1 Diabetes
- Children's Hospital Los Angeles, Los Angeles
- University of California San Francisco, San Francisco
RecruitingPhase 2
Ages 6 to 17 · All sexes · Updated Aug 13, 2026 · NCT07224321Food Insecurity Reduction & Strategy Team
- Stanford Medicine, Palo Alto
Recruiting
Ages 18 and older · All sexes · Updated Aug 11, 2026 · NCT06329375A Study of GNTI-122 in Adults Recently Diagnosed With T1D
- City of Hope Medical Center, Duarte
- University of California - San Diego, San Diego
- University of California - San Francisco, San Francisco
RecruitingPhase 1
Ages 18 to 55 · All sexes · Updated Aug 10, 2026 · NCT06919354Efficacy of the Omnipod® 6 System Compared With the Omnipod® 5 System
- University of Southern California, Los Angeles
- Sansum Diabetes Research Institute, Santa Barbara
Recruiting
Ages 14 to 75 · All sexes · Updated Aug 3, 2026 · NCT07579702Denosumab for Type 1 Diabetes
- City of Hope Medical Center, Duarte
RecruitingPhase 1/2
Ages 18 to 50 · All sexes · Updated Jul 28, 2026 · NCT06524960Commercial or Open Source Closed Loop Impact on Pregnancy Study
- University of California, San Francisco, San Francisco
RecruitingObservational study
Ages 18 and older · Women · Updated Jul 27, 2026 · NCT06654713Automated Insulin for Management of Intrapartum Glycemia
- University of California, Los Angeles, Los Angeles
- University of California, San Diego, San Diego
- University of California, San Francisco, San Francisco
Recruiting
Ages 18 to 55 · Women · Updated Jul 13, 2026 · NCT06883344Safety and Efficacy of Adjunct Therapies in Adults With Type 1 Diabetes: Multicenter, Registry Study
- Hoag Memorial Hospital, Newport Beach
RecruitingObservational study
Ages 18 and older · All sexes · Updated Jun 30, 2026 · NCT07676565A Study to Evaluate Safety, Tolerability and Pharmacokinetics of Orally Administered TIX100 in Healthy Subjects
- ProSciento, INC, Chula Vista
RecruitingPhase 1Healthy volunteers welcome
Ages 18 to 70 · All sexes · Updated Jun 30, 2026 · NCT07675590ACT1VATE: Addressing Emotional Distress to Improve Outcomes Among Diverse Adults With Type 1 Diabetes
- Scripps Whittier Diabetes Institute, San Diego
RecruitingPhase 2
Ages 18 and older · All sexes · Updated May 29, 2026 · NCT04933851A Single Bolus, 12-hour Euglycemic Clamp Study of the Safety, Pharmacokinetics (PK) and Glucodynamics (GD) of Intraperitoneal (IP) Portal Insulin U-500
- ProSciento, Inc., Chula Vista
RecruitingPhase 1
Ages 18 to 60 · All sexes · Updated Apr 28, 2026 · NCT07341373Gemini Study: A Prospective, Multicenter Evaluation of Performance and Safety of the Eversense Gemini System With Flash Glucose Measurement Feature
- Headlands Research - AMCR Institute, Escondido
Recruiting
Ages 18 and older · All sexes · Updated Apr 21, 2026 · NCT07386340Registry for Stage 2 Type 1 Diabetes
- University of California Los Angeles Health- Site Number : 8400020, Los Angeles
- University of California San Francisco - Mission Bay- Site Number : 8400005, San Francisco
RecruitingObservational study
All ages · All sexes · Updated Apr 13, 2026 · NCT06481904Accuracy and Precision of the Continuous Glucose Monitoring System 'CareSens Air 3' in Adult Patients With T1DM
- Headlands Research AMCR, Escondido
- Diablo Clinical Research, Walnut Creek
Recruiting
Ages 18 to 65 · All sexes · Updated Apr 9, 2026 · NCT07296276Pharmacokinetic and Early Efficacy of OPT101 in Patients With Type 1 Diabetes Mellitus
- Diablo Clinical Research Center, Walnut Creek
RecruitingPhase 2
Ages 18 to 50 · All sexes · Updated Apr 6, 2026 · NCT06964087Sotagliflozin to Slow Kidney Function Decline in Persons With Type 1 Diabetes and Diabetic Kidney Disease
- Stanford University Medical Center, Stanford
RecruitingPhase 3
Ages 18 to 75 · All sexes · Updated Mar 24, 2026 · NCT06217302Closed Loop and Education for Hypoglycemia Awareness Restoration
- University of California, San Diego, La Jolla
Recruiting
Ages 18 to 75 · All sexes · Updated Mar 3, 2026 · NCT06325202Improving Islet Transplantation Outcomes With Gastrin for Type I Diabetes
- City of Hope Medical Center, Duarte
RecruitingPhase 1/2
Ages 18 to 68 · All sexes · Updated Feb 23, 2026 · NCT03746769Use of CGM in Kidney Transplant Recipients
- UC Davis Health, Sacramento
Recruiting
Ages 18 and older · All sexes · Updated Jan 29, 2026 · NCT04783441A Longitudinal, Observational Study Comparing Real-World Experiences of Teplizumab-Treated and Untreated Participants With Stage 2 Type 1 Diabetes in the United States
- Investigational Site, San Francisco
RecruitingObservational study
Ages 8 and older · All sexes · Updated Dec 3, 2025 · NCT07260110High Dose Aflibercept in Diabetic Macular Edema in Patients With Previous Vitrectomy
- Retina Consultants of Orange County, Fullerton
RecruitingPhase 4
Ages 21 and older · All sexes · Updated Jul 10, 2025 · NCT06662994TrialNet Pathway to Prevention of T1D
- Childrens Hospital of Orange County, Orange
- University of California San Francisco, San Francisco
- Stanford University Medical Center, Stanford
RecruitingObservational studyHealthy volunteers welcome
Ages 2 to 45 · All sexes · Updated Jul 1, 2025 · NCT00097292Acetazolamide in Persons With Type 1 Diabetes - Crossover Trial
- UC San Diego Altman Clinical & Translational Research Institute, La Jolla
RecruitingPhase 2
Ages 18 and older · All sexes · Updated Jun 17, 2025 · NCT06981234Randomized Trial of Supplemental Synchronous and Asynchronous Telehealth to Improve Glycemic Control for Pediatric Patients With Type 1 Diabetes
- University of California-Davis, Sacramento
Recruiting
Ages 5 to 18 · All sexes · Updated Mar 27, 2025 · NCT04428658From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.