GLPwatch

Dulaglutide and Insulin MicrosecretiON in Type 1 Diabetes

NCT03668470 · Completed

Last updated 2026-05-28

This clinical trial is testing whether dulaglutide, a diabetes medication, can help adults with type 1 diabetes who still produce small amounts of insulin.

Status Completed The study has finished.
Phase Phase 2 Tests whether it works and watches safety in a moderate group.
Type Interventional (clinical trial)
Design Randomized, quadruple-blind treatment study
Participants 45 people
Who can join Ages 20–60 · all sexes
Timeline Started 2019-01 · est. completion 2021-02
Where 7 sites · France

What this study is testing ClinicalTrials.gov NCT03668470 ↗

Description as written by the study sponsor.

Some patients with type 1 diabetes (T1D) can still have some remaining insulin-positive cells in the pancreas and secrete little amounts of insulin. Despite the presence of residual beta cells, the HbA1C levels remain at high levels due to functional defects of insulin secretion associated with glucotoxicity. Previous trials have indicated that treatment with a Glucagon-like peptide 1 (GLP-1 )receptor agonist in T1D with some residual beta-cell function might improve glycemic control, reduce dose of insulin and risk of hypoglycemia. The general hypothesis of DIAMOND-GLP1 is that GLP1-R agonists will improve blood glucose After initial screening to select insulin microsecretors and a run-in period of one month, patients will be randomized into two arms and followed in parallel for 24 weeks : * Experimental group receiving 1.5 mg Dulaglutide s.c weekly in addition to their usual insulin regimen * Control group receiving placebo s.c weekly in addition to their usual insulin regimen. The primary endpoint is HbA1c value at 24 weeks

Treatments tested

Main thing measuredHbA1c level
SponsorHospices Civils de Lyon
Conditions studiedAdult Subjects With Type1Diabetes and Insulin Microsecretion
GLP-1 drugs dulaglutide

Full protocol, eligibility, and contacts on ClinicalTrials.gov NCT03668470 ↗