Type 1 Diabetes Mellitus study: Teplizumab
Official title A 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
ClinicalTrials.gov ID: NCT07088068
What this study is testing
What is Teplizumab?
an investigational intravenous infusion being studied as a potential treatment for type 1 diabetes mellitus is designed to modulate the activity of T cells by targeting the CD3 receptor
Also referred to as SAR446681, TZIELD.
Plain-language explanation of the investigational treatment. It is being studied and is not an approved or proven therapy. The study team can confirm the details.
- What it's testing
- The study wants to see if teplizumab improves blood‑sugar control and reduces the need for mealtime insulin over one year compared with a placebo.
- Who it's for
- People aged 1 to 25 who have recently been diagnosed with stage 3 type 1 diabetes and are already using insulin.
- What's involved
- Participants receive an IV (intravenous) infusion of either teplizumab or a placebo and continue their usual insulin therapy, with regular check‑ups and blood tests.
- Time commitment
- The trial lasts about 52 weeks and includes scheduled infusion visits and follow‑up appointments throughout the year.
- Phase 3: a large, late-stage study
- Time commitment: about 52 weeks
- You might receive a placebo (an inactive treatment) instead of the study drug, decided by chance. You may not know which one you got.
A plain-language read of the study's public ClinicalTrials.gov listing. The study team confirms the details.
Who can take part
Ages 1 to 25
You may be able to join if
- Participant must be 1 to 25 years of age inclusive, at the time of signing the informed consent.
- Participants diagnosed with T1D Stage 3 according to American Diabetes Association 2025 criteria
- Participants able to be assigned by chance and initiate study drug within 8 weeks (56 days) of the Stage 3 T1D diagnosis
- Glutamic acid decarboxylase (GAD-65),
- Insulinoma Antigen-2 (IA-2),
You likely can't join if
- Participant has diabetes other than autoimmune T1D that includes but is not limited to genetic forms of diabetes, maturity-onset diabetes of the...
- Participant has an active serious infection and/or fever ≥38.5°C (101.3°F) within the 48 hours prior to the first dose (except if localized skin...
- At screening, participant has laboratory or clinical evidence of acute or clinically active infection with Epstein-Barr virus (EBV), cytomegalovirus...
- At screening, participant has positive serology for human immunodeficiency virus (HIV), hepatitis B (HBV), or hepatitis C (HCV).
- Participant has evidence of active or latent tuberculosis (TB) as documented by medical history and examination, chest X-rays (posterior anterior and...
- Has other autoimmune diseases, (eg, rheumatoid arthritis, polyarticular juvenile idiopathic arthritis, psoriatic arthritis, ankylosing spondylitis...
See the full eligibility criteria
Who can join
- Participant must be 1 to 25 years of age inclusive, at the time of signing the informed consent.
- Participants diagnosed with T1D Stage 3 according to American Diabetes Association 2025 criteria
- Participants able to be assigned by chance and initiate study drug within 8 weeks (56 days) of the Stage 3 T1D diagnosis
- Glutamic acid decarboxylase (GAD-65),
- Insulinoma Antigen-2 (IA-2),
- Zinc-transporter 8 (ZnT8), or
- Insulin (if obtained not later than 14 days after exogenous insulin therapy initiation).
- Islet cell cytoplasmic autoantibodies (ICAs)
- Have random C-peptide level ≥0.2 nmol/L obtained at screening
- Enter Sex
- Both male and female participants are eligible.
- Contraceptive use by women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
- Is a woman of nonchildbearing potential (WONCBP) OR
- Is a woman of childbearing potential (WOCBP) and agrees to use a contraceptive method that is highly effective, with a failure rate of \<1% during the study intervention period (to be effective before starting the...
- A WOCBP must have a negative highly sensitive pregnancy test at screening (serum) and within 24 hours (urine or serum as required by local regulations) before the first administration of study intervention.
- Lactating woman must interrupt breastfeeding and pump and discard breast milk during and for 20 days after last administration of study intervention.
- Capable of giving signed informed consent as described in Appendix 1 of the protocol which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in the protocol.
What rules you out
- Participant has diabetes other than autoimmune T1D that includes but is not limited to genetic forms of diabetes, maturity-onset diabetes of the young (MODY), diabetes secondary to medications or surgery and type 2...
- Participant has an active serious infection and/or fever ≥38.5°C (101.3°F) within the 48 hours prior to the first dose (except if localized skin infection), or has chronic, recurrent or opportunistic infectious disease.
- At screening, participant has laboratory or clinical evidence of acute or clinically active infection with Epstein-Barr virus (EBV), cytomegalovirus (CMV).
- At screening, participant has positive serology for human immunodeficiency virus (HIV), hepatitis B (HBV), or hepatitis C (HCV).
- Participant has evidence of active or latent tuberculosis (TB) as documented by medical history and examination, chest X-rays (posterior anterior and lateral), and/or TB testing.
- Has other autoimmune diseases, (eg, rheumatoid arthritis, polyarticular juvenile idiopathic arthritis, psoriatic arthritis, ankylosing spondylitis, multiple sclerosis, systemic lupus erythematosus etc), except...
- Any clinically significant abnormality identified either in medical/surgical history or during screening evaluation (eg, physical examination, laboratory tests, vital signs), or any adverse event (AE) during screening...
- Live-attenuated (live) vaccines (eg, varicella, measles, mumps, rubella, cold-attenuated intranasal influenza vaccine, and smallpox) within the 8 weeks before first dose of the investigational medicinal product (IMP) or...
- Inactivated or mRNA vaccines within 2 weeks before the first dose of IMP or planned required administration during treatment or up to 6 weeks after last IMP administration in any treatment course.
- Current or prior use (within 30 days before screening) of any anti-hyperglycemic agents other than insulin
- Past (within 30 days prior to screening) or current administration of any treatment that is known to cause a significant, ongoing change in the course of T1D or immunologic status, including but not limited to systemic...
- Past systemic immunosuppression medicine or immune modulatory biologic therapy (such as monoclonal antibodies), within 3 months or 5 half-lifes (whichever is longer) prior to dosing.
- Current or prior (within 30 days before screening) use of any medication known to significantly influence glucose tolerance (eg, atypical antipsychotics, diphenylhydantoin, niacin).
- Participant has previously received teplizumab or other anti-CD3 treatment.
- Other medications not compatible or interfering with IMP at discretion of Investigator.
- Current enrollment OR past participation in another investigational study in which an investigational intervention (eg, drug, vaccine, invasive device) was administered within the last 8 weeks or 5 half-lifes, whichever...
- Lymphocyte count: \<1000/µL,
- Neutrophil count: \<1500/µL (\< 1000 /µL in participants with documented Duffy-null genotype),
- Platelet count: \<150,000 platelets/µL,
- Hemoglobin: \<10 g/dL,
- Aspartate aminotransferase (AST) \>2.0 × upper limit of normal (ULN),
- Alanine aminotransferase (ALT) \>2.0 × ULN,
- Total bilirubin \>1.5 × ULN with the exception of participants with the diagnosis of Gilbert's syndrome who may be eligible provided they have no other causes leading to hyperbilirubinemia The above information is not...
The study team makes the final eligibility decision.
Where it is enrolling
- Scottsdale, Arizona, United States
- San Diego, California, United States
- San Francisco, California, United States
- Aurora, Colorado, United States
- New Haven, Connecticut, United States
- Gainesville, Florida, United States
- Hollywood, Florida, United States
- Jacksonville, Florida, United States
- Tampa, Florida, United States
- Winter Park, Florida, United States
- Atlanta, Georgia, United States
- Columbus, Georgia, United States
- Boise, Idaho, United States
- Idaho Falls, Idaho, United States
- Louisville, Kentucky, United States
- Ann Arbor, Michigan, United States
- Rochester, Minnesota, United States
- Saint Louis Park, Minnesota, United States
- Kansas City, Missouri, United States
- Buffalo, New York, United States
+ 145 more site(s).
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part, but confirm specifics with the study team.
How long does this study last?
The study runs about 52 weeks per participant, based on its public description. The team confirms the exact schedule and number of visits before you enroll.
Who can join this trial?
This study is enrolling all sexes, 1 year to 25 years. The study team makes the final eligibility decision.
Where is this trial taking place?
This study is enrolling now at Scottsdale, Arizona, United States; San Diego, California, United States; San Francisco, California, United States; Aurora, Colorado, United States; New Haven, Connecticut, United States; Gainesville, Florida, United States and 159 more locations. Enter your location above to see the nearest enrolling site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool that is independent of the study sponsor. Details come from ClinicalTrials.gov. The study team decides eligibility, and your own doctor gives medical advice.