Diabetes Mellitus, Type 1 Clinical Trial
Official title:
A Randomized, Controlled, Crossover Trial to Assess a Fully Automated, Dual-hormone (Insulin-and-pramlintide) Delivery System Without Carbohydrate Counting in Regulating Glucose Levels in Adults With Type 1 Diabetes.
The aim of this clinical trial is to investigate whether a fully automated Lyumjev-and-pramlintide delivery system improves glycemic outcomes in adults with type 1 diabetes. The main question we aim to answer is whether a Lyumjev-pramlintide fully closed loop system improves time in range compared to a hybrid closed loop system with carbohydrate counting. We also aim to find the optimal insulin to pramlintide ratio for glycemic control in the fully automated system. In this cross-over study, patients will undergo the following three interventions in a random order: (i) fully automated Lyumjev insulin-and-pramlintide (8 μg/u) (ii) fully automated Lyumjev insulin-and-pramlintide (10 μg/u) (iii) rapid automated Lyumjev insulin-and-placebo with carbohydrate-matched boluses For all interventions, participants will be required to wear two Ypsomed pumps programmed by our developed EuGlide system.
The aim of this study is to conduct an outpatient, randomized, crossover clinical trial to compare the glycemic outcomes of a fully automated Lyumjev-pramlintide delivery system to a hybrid automated Lyumjev-placebo delivery system with carbohydrate counting in 26 adults with type 1 diabetes. Design- All participants will undergo three interventions in a random order: (i) Fully automated Lyumjev insulin-pramlintide delivery system. Ratio of 1 unit of inulin for 8μg of pramlintide. (ii) Fully automated Lyumjev insulin-pramlintide delivery system. Ratio of 1 unit of insulin for 10μg of pramlintide. (iii) Hybrid automated Lyumjev insulin-placebo delivery system with carbohydrate-matched boluses. Study drugs- Lyumjev is a Health Canada insulin for treatment of type 1 diabetes. Participants who do not currently use Lyumjev will be switched to it for the duration of the study. Pramlintide is an FDA-approved drug used in the treatment of type 1 diabetes. It contributes to regulating glucose levels by delaying gastric emptying, suppressing nutrient-stimulated glucagon secretion and increasing satiety. It is not approved for commercial use by Health Canada, but has been approved for the purpose of the study. Study Devices- For the duration of the study, participants will use a Dexcom G6 Continuous Glucose Monitor (GCM), two YpsoPumps (for insulin and pramlintide) as well as a study smartphone with the Euglide application installed. The automated insulin delivery (AID) system will integrate these sets of devices to automate insulin (and pramlintide) delivery in response to an individual's glucose levels. Treatment Period- Each intervention will last three weeks and be preceded by a 5-day at-home run-in period. After both the second and third interventions, there will be a 14-45 day washout period. Participants will be followed-up with remotely on days 2 (+/-1) and 5 of each run-in and on days 2(+/-1), 3(+/-1) and 7(+/-2) of each intervention. Remote contact can be performed via phone, email, text message or another reasonable communication channel. After each intervention, participants will be interviewed and asked to complete questionnaires assessing diabetes control and quality of life. Participants will need approximately 15-30 weeks to complete the study. The study will enroll up to 4 pilot participants, as well as 26 main study participants who meet the eligibility criteria. ;
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