Mealtime or Post-meal Dosing of URLi in Medtronic 780G Hybrid Closed Loop System

Summary

This is a pilot study to compare premeal to postmeal dosing of ultra rapid lispro insulin (URLi) used in a MiniMed 780G system hybrid closed loop system. Subjects with type 1 diabetes mellitus (T1DM) already using a 780G hybrid closed loop system with URLi will be included. After signing a remote digital informed consent, a baseline record of the MiniMed 780G system will be downloaded from the Medtronic digital platform (Carelink system \[1\]) and subjects will be asked to fill an online questionnaire regarding their time of insulin dosing preferences and a 3-day online food diary \[2\]. During the intervention period subjects will be asked to provide a bolus dose of insulin only at the end of meals for up to 4 weeks. During the last week of the intervention period, subjects will be asked to fill out a 3-day online food diary \[2\]. At the end of the intervention period- a Carelink report \[1\] will be collected remotely and subjects will be asked to fill again the online questionnaire regarding their time of dosing preferences. 1. Primary Objective: To assess the efficacy of premeal dosing to post-meal dosing on parameters of glycemic control as obtained from continuous glucose monitoring. 2. Secondary Objective: To assess patient dosing preferences and the effect of premeal dosing vs. post-meal dosing on patient reported outcomes Ref: 1. carelink.medtronic.eu 2. NutRatio.com.

Timeline

Start

2024-10-06

Primary completion

2025-09-21

Completion

2025-10-21

Publications

• Results Petrovski G, Campbell J, Pasha M, Day E, Hussain K, Khalifa A, van den Heuvel T. Simplified Meal Announcement Versus Precise Carbohydrate Counting in Adolescents With Type 1 Diabetes Using the MiniMed 780G Advanced Hybrid Closed Loop System: A Randomized Controlled Trial Comparing Glucose Control. Diabetes Care. 2023 Mar 1;46(3):544-550. doi: 10.2337/dc22-1692.
• Results Petrovski G, Campbell J, Pasha M, Hussain K, Khalifa A, Umer F, Almajaly D, Hamdar M, Heuvel TVD, Edd SN. Twelve-Month Follow-up from a Randomized Controlled Trial of Simplified Meal Announcement Versus Precise Carbohydrate Counting in Adolescents with Type 1 Diabetes Using the MiniMed 780G Advanced Hybrid Closed-Loop System. Diabetes Technol Ther. 2024 Mar;26(S3):76-83. doi: 10.1089/dia.2023.0429.
• Results Warren M, Bode B, Cho JI, Liu R, Tobian J, Hardy T, Chigutsa F, Phillip M, Horowitz B, Ignaut D. Improved postprandial glucose control with ultra rapid lispro versus lispro with continuous subcutaneous insulin infusion in type 1 diabetes: PRONTO-Pump-2. Diabetes Obes Metab. 2021 Jul;23(7):1552-1561. doi: 10.1111/dom.14368. Epub 2021 Mar 23.
• Results Datye KA, Boyle CT, Simmons J, Moore DJ, Jaser SS, Sheanon N, Kittelsrud JM, Woerner SE, Miller KM; T1D Exchange. Timing of Meal Insulin and Its Relation to Adherence to Therapy in Type 1 Diabetes. J Diabetes Sci Technol. 2018 Mar;12(2):349-355. doi: 10.1177/1932296817728525. Epub 2017 Sep 12.
• Results Arrieta A, Battelino T, Scaramuzza AE, Da Silva J, Castaneda J, Cordero TL, Shin J, Cohen O. Comparison of MiniMed 780G system performance in users aged younger and older than 15 years: Evidence from 12 870 real-world users. Diabetes Obes Metab. 2022 Jul;24(7):1370-1379. doi: 10.1111/dom.14714. Epub 2022 May 12.
• Results Bergenstal RM, Beck RW, Close KL, Grunberger G, Sacks DB, Kowalski A, Brown AS, Heinemann L, Aleppo G, Ryan DB, Riddlesworth TD, Cefalu WT. Glucose Management Indicator (GMI): A New Term for Estimating A1C From Continuous Glucose Monitoring. Diabetes Care. 2018 Nov;41(11):2275-2280. doi: 10.2337/dc18-1581. Epub 2018 Sep 17.
• Results Choudhary P, Kolassa R, Keuthage W, Kroeger J, Thivolet C, Evans M, Re R, de Portu S, Vorrink L, Shin J, Habteab A, Castaneda J, da Silva J, Cohen O; ADAPT study Group. Advanced hybrid closed loop therapy versus conventional treatment in adults with type 1 diabetes (ADAPT): a randomised controlled study. Lancet Diabetes Endocrinol. 2022 Oct;10(10):720-731. doi: 10.1016/S2213-8587(22)00212-1. Epub 2022 Sep 1.

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