Anders L. Carlson, United States of America
International Diabetes Center EndocrinologyPresenter of 2 Presentations
Introducing Smart MDI Therapy and overview of the integrated Insights by InPen Data Reports
Performance of studies on advance hybrid closed-loop 780G
Abstract
Abstract Body
There have been major advancements in automated insulin delivery systems in the past several years, with hybrid closed-loop systems offering patients new means to manage their diabetes. Such systems rely on algorithms to modulate the insulin delivery, increasing or decreasing insulin delivery based upon programed target glucose, patient-entered carbohydrates and correction boluses that can be user or device initiated. The MiniMedTM Advanced Hybrid Closed Loop (AHCL) system, or MiniMedTM 780G, is a new iteration of pump therapy that has a target set point of either 100 mg/dL (5.6 mmol/L) or 120 mg/dL (6.7 mmol/L), along with automated corrections that can deliver boluses every 5 minutes as needed.
The MiniMedTM 780G system has been studied for safety and efficacy in recent trials. The largest trial was a multi-site pivotal trial of 39 adolescents (age 14-21 years) and 118 adults (>22 years) during which patients with type 1 diabetes used either the 100 mg/dL or 120 mg/dL set point for approximately 45 days, and then crossed over to the other set point for another period of about 45 days. For the overall study group, time in range (70-180 mg/dL/ 3.9 mmol/L-10 mmol/L) increased from 68.8% to 74.5% (p = 0.001). For those using the set point of 100 mg/dL and an active insulin time of 2 hours, time in range increased to 78.8%. Auto Mode was in use for 95% of the time for both set points during the study. Of the total bolus insulin delivered during the study, approximately 22% of this was administered by the auto-correction function. Time in hypoglycemia was reduced in both adolescents and adults, and there were no DKA or severe hypoglycemia events.
Additional studies have compared the MiniMedTM 780G system against both the first commercially available hybrid closed-loop system in the United States, the MiniMedTM 670G, and to a system with predictive low glucose threshold suspend MiniMedTM 640G. Both studies concluded the AHCL system provided improved glycemic control without increasing time in hypoglycemia.
The MiniMedTM 780G has consistently demonstrated improved time in range without increasing time below range, and has been safe in the trials to date. The system also seemed to have improved user experience with patient-selected targets and fewer Auto Mode exits.