Long-Term Outcomes of Teplizumab in Routine Clinical Care

This is an observational, prospective cohort study designed to evaluate the outcomes after teplizumab treatment in participants with Stage 2 Type 1 Diabetes (T1D) for delaying the onset of Stage 3 T1D. The study will monitor participants receiving teplizumab as part of routine clinical care across multiple sites. Additionally, patient-reported outcomes (PROs) will be evaluated to further assess the treatment's impact on participant's quality of life including emotional and psychosocial aspects associated with T1D. This approach will provide a more comprehensive understanding of how the treatment performs over time and across diverse patient populations, providing valuable insights into the sustained effects of teplizumab and offering a real world picture of its impact on the long-term management of T1D.

Enrolled participants will be followed for up to 10 years depending on the time the participants are included after initiating teplizumab treatment.

Inclusion Criteria - * Participants who have received at least 1 teplizumab infusion within 6 weeks prior to enrollment. * Participants must have a confirmed diagnosis of Stage 2 T1D according to the treating physician at the time of the first infusion of teplizumab. (Note: Participants who progress to Stage 3 T1D by Week 6 will still be eligible, provided they were in Stage 2 at the time of the first teplizumab infusion.) • Participants (or their legal guardians, as applicable) who provide appropriate written or electronic informed consent/assent as applicable for the age of the participant and as per local regulations. Exclusion Criteria - * Participants who had participated in a previous clinical trial for teplizumab. * Participants enrolled in a clinical trial within 6 months prior to study enrollment. (Note: Participants enrolled in other observational studies may be included.) The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.