Recent-Onset Type 1 Diabetes Extension Study Evaluating the Long-Term Safety of Teplizumab (PROTECT Extension)

Provention Bio, a Sanofi Company

Status

Active, not recruiting

Conditions

Diabetes Mellitus, Type 1

Treatments

Other: Placebo

Biological: Teplizumab

Study type

Observational

Funder types

Industry

Identifiers

NCT04598893

PRV-031-003

Details and patient eligibility

About

The purpose of this non-interventional extension study is to continue to collect long-term safety and other clinical data for an additional 42 months in participants who completed the PROTECT study.

Full description

This study is the long-term extension of the PRV-031-001 (PROTECT) study. PROTECT is a Phase 3, randomized, double-blind, placebo-controlled, multinational, multi-center study to evaluate the efficacy and safety of teplizumab, a humanized, anti-CD3 monoclonal antibody, in children and adolescents ages 8 through 17 recently diagnosed with type 1 diabetes (within 6 weeks of diagnosis) in which approximately 300 participants were randomized at a ratio of 2:1 to the teplizumab or placebo and received two courses of treatment administered 6 or 12 months apart with final follow-up at approximately 18 months (78 weeks) after the first dose.

Participants who complete the PROTECT study are invited to enroll in this observational, extension study to collect long-term safety and other clinical data. The decision to participate can be made within 12 months of completing the PROTECT study.

No study drug will be administered during this extension study. Participants will continue to receive standard care for type 1 diabetes from their primary physicians.

Participants will return to the study sites for assessments once every 6 months through Month 42. Therefore, the combined duration of the PROTECT and PROTECT Extension studies will be 60 months.

Enrollment

188 patients

Sex

All

Ages

9 to 19 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Completion of the PRV-031-001 (PROTECT) study by completing the Week 78 visit in that study, regardless of how many doses of study drug were administered.
Provide written informed consent within 12 months of the Week 78 in the PRV-031-001 study. Written assent will be obtained for participants under 18 years of age at the time of enrollment, according to applicable regulations. If possible, written informed consent and/or assent for the current PROTECT Extension study (PRV-031-003) should be obtained at the final (Week 78) visit in the PROTECT study.

Exclusion criteria

1. Premature discontinuation from the PRV-031-001 (PROTECT) study for any reason.