Pilot Study 1 of Outpatient Control-to-Range - System and Monitoring Testing

Type 1 Diabetes Mellitus Clinical Trial

Official title: Feasibility Study of a Portable Artificial Pancreas System in Type 1 Diabetes

Status Completed

Clinical Trial Summary

A single arm, single treatment study is proposed to assess the feasibility of a portable artificial pancreas system outside of a hospital based clinical research center.

Adult T1DM patients will use a newly developed platform in conjunction with a subcutaneous insulin infusion pump and a continuous glucose monitor for 18 hours is quasi free conditions (hotel).

Clinical Trial Description

Automated closed-loop control (CLC), known as "artificial pancreas" (AP) can have tremendous impact on the health and lives of people with type 1 diabetes (T1D). Our inter-institutional and international research team has been on the forefront of CLC developments since the beginning of the JDRF Artificial Pancreas initiative in 2006. Thus far, we have conducted three closed-loop control clinical trials (totaling 60 subjects with T1D), which demonstrated significantly more time in an acceptable "target" blood glucose range during CLC, and significantly fewer hypoglycemic events during CLC compared to open loop. Our overall objective is to sequentially test, validate, obtain regulatory approval for, and deploy at home, a closed-loop Control-to-Range (CTR) system comprised of two algorithmic components: a Safety Supervision Module (SSM) and an automated Range Correction Module (RCM). The SSM will monitor the safety of the subject's continuous subcutaneous insulin infusion pump (CSII) to prevent hypoglycemia, and will also monitor the integrity of continuous glucose monitor (CGM) data for signal sensor deviations or loss of sensitivity. The RCM will be responsible for the optimal regulation of postprandial hyperglycemic excursions through correction boluses.

The first phase to address our overall objective is a pilot study that will test the ability of a cell-phone-based system to (1) run CTR in an outpatient setting, and (2) be remotely monitored. Specifically, this pilot study entails a hybrid hotel/hospital design targeting adults with T1D that are experienced insulin pump users. Subjects will spend one night in a local hotel, during which the phone-based system will be remotely monitored in an adjacent hotel room for validation that remote system monitoring can successfully occur. Subjects will spend the following day in the hospital, where CTR will be activated, and challenged with meals and a CGM sensor replacement . Subjects will then spend a second night in the hotel for continued evaluation of remote system monitoring, along with outpatient testing of the CTR system run on the phone-based system. This series of admissions will address the first major hurdles that need to be overcome for home deployment of a closed loop CTR system:

Specific Aim 1: The phone-based CTR system can be remotely monitored by nurses/physicians/technicians to confirm appropriate functioning outside of the hospital setting.

Specific Aim 2: The CTR can be deployed outside of the hospital setting. ;

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Diabetes Mellitus, Type 1
• Type 1 Diabetes Mellitus

• NCT number: NCT01470807
• Study type: Interventional
• Source: University of Virginia
• Status: Completed
• Phase: N/A
• Start date: October 2011
• Completion date: December 2011