RECRUITING Phase 1 / Phase 2 ClinicalTrials.gov

CNP-103 in Adolescent and Adult Subjects Ages 12-35 With Recently Diagnosed (Within 6 Months) Stage 3 Type 1 Diabetes (T1D)

Sponsor: COUR Pharmaceutical Development Company, Inc. • ClinicalTrials.gov ID: NCT06783309

Registry updated: 2026-09-11

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Description

This study is a Phase 1b/2a First-in-Human (FIH) clinical trial to assess the safety, tolerability, pharmacodynamics (PD), and efficacy of multiple ascending doses of CNP-103. The approximately 393-days study consists of a Screening Period (28 days), Treatment Period (90 days), and Post-Dose Evaluations (275 days).

Interventions

CNP-103 (Drug)
CNP-103
Placebo (Drug)
0.9% sodium chloride for injection

Eligibility criteria

Inclusion Criteria: 1. Participants who are willing and able to provide Institutional Review Board (IRB) approved written informed consent and privacy language as per national regulations. 2. Men and non-pregnant, non-breast-feeding women ages 12-35 years inclusive. 3. Documented diagnosis of Stage 3 T1D within 180 days prior to study enrollment according to American Diabetes Association (ADA) criteria. 4. Participants must be on standard of care diabetes management including insulin therapy as a routine and also consisting of a nutrition plan, regular exercise, or other relevant specialty care as required on a patient-by-patient basis. 5. Participants with a peak stimulated C-peptide of \>0.2 nmol/L measured from a screening mixed meal tolerance test (MMTT). 6. Participants with an episode of diabetic ketoacidosis (DKA) must have a MMTT performed no sooner than 2 weeks after resolution of the DKA event to have a qualifying C-peptide reading. 7. Participants on systemic corticosteroids or any medication used to treat the symptoms of T1D (other than insulin) must undergo a washout period of at least two weeks prior to enrollment and must agree to use a non-steroid alternative throughout the trial, if necessary, for any disorder requiring corticosteroids. In addition, participants must be on a stable dose of any other medications, other than insulin, for a minimum of 1 month prior to enrollment and must agree not to increase their dose from the Screening Visit through the End of Study Visit unless reviewed and approved by the medical monitor and the principal investigator. 8. Female participants of non-childbearing potential (e.g., surgical sterilization, no menses for a year). 9. Women of childbearing potential (WOCBP) who have agreed not to become pregnant during the study, have a negative pregnancy test at Screening Visit, and agree to use 1 highly effective form of birth control starting at initial screening and continuing throughout the entire study to Day 365. 10. Female participants who agree to not breastfeed starting at initial Screening and throughout the entire study to Day 365. 11. Female participants who agree to not donate ova, including autologous, starting at initial Screening and throughout the entire study to Day 365. 12. Male participant and with a spouse or partner of childbearing potential, who themselves and their spouse or partner agree to practice an effective form of birth control as discussed with the study doctor or study staff starting at Screening and throughout the entire study to Day 365. 13. Participants must weigh \>35 kg at Screening for Cohort 1 (100 mg) and Cohort 2 (300 mg); participants must weigh \>50 kg at Screening for Cohort 3 (600 mg). 14. Body mass index (BMI): 1. Participants 12-17 years: BMI Z-Score within 5th and 95th percentile based on participant's age (e.g., Baylor College of Medicine Age-based Pediatric Growth Reference Charts: BMI Z-Score and Percentile Calculator) 2. Participants 18-35 years: 18.0-30.0 (not inclusive) Exclusion Criteria: 1. Participants unable to comply with prohibited medication outlined in the protocol. 2. Exclusion of additional immunomodulation will be at the discretion of the Medical Monitor and study site Investigator. 3. Participants with a history of tuberculosis or positive Quantiferon test. 4. Participants who received vaccinations in the following time frame: 1. Any live vaccine within 28 days prior to Screening. 2. Any subunit vaccine within 14 days prior to Screening. 3. Any COVID-19 vaccine series within 14 days prior to Screening. 4. Any other planned vaccine starting 14 days prior to Screening and through study Day 90 and 1 week after. (Note: The annual influenza vaccine is not an exclusion criterion.) 5. Known or suspected acute infection, including COVID-19 at the time of Screening or within 2 weeks prior to Screening. After confirmed recent COVID-19 infection, a minimum of 2 weeks of recovery post-acute infection is required. 6. Participants with Screening laboratory test results that are outside the normal limits and considered by the Investigator to be clinically significant. 7. Participants with positive test results for hepatitis B surface antigen (HBsAg), hepatitis C virus (HCV) antibody, or human immunodeficiency virus (HIV) antigen/antibody as determined at Screening. 8. Participants with a history of or currently active immune disorders other than T1D (including autoimmune disease) unless the condition, after discussion with the Medical Monitor, has been deemed to be acceptable for the participant's participation in this study. 9. Participants with a clinical history of significant cardiovascular disease in the past 12 months. 10. Participants with a complication or medical history of malignant tumor, other than basal cell or squamous cell carcinomas of the skin. 11. Participants who, in the Investigator's opinion, will be unable to adhere to study visits and procedures. 12. Participants who have received investigational therapy other than CNP-103 within 28 days or 5 half-lives, whichever is longer, prior to Screening. 13. Participants with any known active condition which, in the Investigator's opinion, makes the participant unsuitable for study participation. 14. Known sensitivity to any components of CNP-103.

Conditions

Type 1 Diabetes Mellitus T1D T1DM T1DM - Type 1 Diabetes Mellitus Type 1 Diabetes in Adolescence Type 1 Diabetes in Children Type 1 Diabetes (Juvenile Onset) Type 1 Diabetes Type 1 Diabetes Patients Type 1 Diabetes Mellitis

Locations

Wake Research - Tucson — Tucson, Arizona, United States
Liver Institute PLLC — Tucson, Arizona, United States
Hoag Memorial Hospital — Newport Beach, California, United States
Rady Children's Hospital San Diego — San Diego, California, United States
Diablo Clinical Research — Walnut Creek, California, United States
Barbara Davis Center for Childhood Diabetes — Aurora, Colorado, United States
Southwest General Healthcare Center — Fort Myers, Florida, United States
University of Florida — Gainesville, Florida, United States
Evolution Research Center — Hialeah, Florida, United States
Nemours Children's Health — Jacksonville, Florida, United States
University of Miami — Miami, Florida, United States
DY Professional Research Center — Miami, Florida, United States
University of South Florida — Tampa, Florida, United States
Atlanta Diabetes Association — Atlanta, Georgia, United States
Emory University — Atlanta, Georgia, United States
Children's Healthcare of Atlanta — Atlanta, Georgia, United States
Rocky Mountain Diabetes and Osteoporosis Center — Idaho Falls, Idaho, United States
Ann & Robert H. Lurie Children's Hospital — Chicago, Illinois, United States
Northwestern University — Chicago, Illinois, United States
Southern Illinois University School of Medicine — Springfield, Illinois, United States
Riley Hospital for Children- Indiana University — Indianapolis, Indiana, United States
Barry J. Reiner, MD, LLC — Baltimore, Maryland, United States
Joslin Diabetes Center — Boston, Massachusetts, United States
University of Michigan — Ann Arbor, Michigan, United States
Embassy Research Network — Bloomfield Township, Michigan, United States
University of Minnesota — Minneapolis, Minnesota, United States
Children's Mercy Hospital — Kansas City, Missouri, United States
Washington University School of Medicine — St Louis, Missouri, United States
UBMD Pediatrics - University of Buffalo — Buffalo, New York, United States
Hassenfield Children's Hospital — New York, New York, United States
NYU Langone Diabetes & Endocrine Associates — New York, New York, United States
Duke University — Durham, North Carolina, United States
Physicians East, PA — Greenville, North Carolina, United States
Wake Research - Raleigh — Raleigh, North Carolina, United States
Superior Clinical Research — Smithfield, North Carolina, United States
University Hospitals Cleveland Medical Center — Cleveland, Ohio, United States
University Diabetes & Endocrine Consultants — Chattanooga, Tennessee, United States
Le Bonhuer Children's — Memphis, Tennessee, United States
Texas Diabetes & Endocrinology — Austin, Texas, United States
M3 Wake Research - Dallas — Dallas, Texas, United States
Accurate Clinical Research, Inc — Humble, Texas, United States
Diabetes & Glandular Disease (DGD) Clinic, P.A. — San Antonio, Texas, United States
TopLine Clinical, Inc — Waxahachie, Texas, United States
Benaroya Research Institute — Seattle, Washington, United States
University of Washington Diabetes Institute — Seattle, Washington, United States

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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