Anti-viral Action Against Type 1 Diabetes Autoimmunity

The study GPPAD-05 AVAnT1A is a phase 4 clinical trial intending to enroll 2252 children, who will be randomly assigned to receive COVID-19 vaccination (Comirnaty® 3 μg Omicron XBB.1.5 or new variant Comirnaty vaccines ) or placebo from age 6 months. The study is an investigator initiated, randomized, controlled, multicentre, multinational, primary prevention trial for children at increased risk of type 1 diabetes. The primary objective is to determine whether vaccination of children with elevated genetic risk for type 1 diabetes against COVID-19 from 6 months of age reduces the cumulative incidence of islet autoantibodies or type 1 diabetes in childhood. Secondary objectives are: 1. to determine whether vaccination against COVID-19 similarly reduces the cumulative incidence of multiple islet autoantibodies in childhood. 2. to determine whether vaccination against COVID-19 similarly reduces the cumulative incidence of type 1 diabetes in childhood and 3. to determine whether vaccination against COVID-19 similarly reduces the cumulative incidence of celiac disease-associated transglutaminase autoantibodies in childhood. Further exploratory objectives are described in the study protocol. Study participants will be identified through an ongoing study screening for genetic risk of type 1 diabetes using a polygenic risk score (NCT03316261). Eligible participants will be enrolled at age 3.00 to 4.00 months (baseline visit). Randomization to vaccine or placebo will occur at age 6.00 to 7.00 months at visit 2. Consent will be obtained by the custodial parents prior to enrollment.

NCT Number	NCT06452654
Lead Sponsor	Technical University of Munich Collaborators: Helmholtz Zentrum München, University Hospital Carl Gustav Carus, Kinderkrankenhaus auf der Bult, Skane University Hospital, Universitaire Ziekenhuizen KU Leuven, Newcastle-upon-Tyne Hospitals NHS Trust, Cambridge University Hospitals NHS Foundation Trust, Birmingham Women's and Children's NHS Foundation Trust
Conditions	Diabetes Mellitus, Type 1
Enrollment	2,252 participants
Start Date	2024-05-08
Primary Completion	2027-10 (estimated)
Study Completion	2027-10 (estimated)
Updated on ClinicalTrials.gov	2025-09-23