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Warming up to Sensors: Does Site Warming Improve Continuous Glucose Monitor Performance?

Primary Purpose

Type 1 Diabetes

Status
Terminated
Phase
Early Phase 1
Locations
United States
Study Type
Interventional
Intervention
Insupatch
Continuous glucose sensor
Sponsored by
Yale University
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional other trial for Type 1 Diabetes focused on measuring Type 1 diabetes, Continuous glucose sensor, Insupatch

Eligibility Criteria

8 Years - 44 Years (Child, Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Clinical diagnosis of type 1 diabetes and using daily insulin therapy for at least 12 months.
  2. Age 8 years to less than 45 years old.
  3. Subject understands the study protocol and agree to comply with it.
  4. Subject is on insulin pump or injection-based basal-bolus therapy
  5. Subject comprehends written English.
  6. For females, subject not intending to become pregnant during the study.
  7. Informed Consent Form signed by the subject
  8. No history of altered skin integrity, poor wound healing, adhesive allergy, or previous infection from sensor wear.
  9. Hemoglobin A1C ≤10%

Exclusion Criteria:

  1. The presence of a significant medical disorder that in the judgment of the investigator will affect the wearing of the sensors or the completion of any aspect of the protocol
  2. The presence of any of the following diseases:

    a. Current use of systemic corticosteroids (within the last week) b. Other major illness that in the judgment of the investigator might interfere with the completion of the protocol i. Adequately treated thyroid disease and celiac disease do not exclude subjects from enrollment

  3. Inpatient psychiatric treatment in the past 6 months for either the subject or the subject's primary care giver (i.e., parent or guardian)
  4. Current or past use of a continuous glucose sensor is not an exclusion criterion.
  5. Active skin condition that would affect sensor placement
  6. Use of acetaminophen or Vitamin C supplement within the last 7 days
  7. Subject is deemed by the Investigator to be unwilling or unable to follow the protocol;
  8. Pregnancy A negative urine pregnancy test will be required for all premenopausal women who are not surgically sterile. Subjects who become pregnant will be discontinued from the study.

    -

Sites / Locations

  • Yale University School of Medicine

Arms of the Study

Arm 1

Arm 2

Arm Type

Active Comparator

Experimental

Arm Label

Sensor alone

Sensor with Insupatch

Arm Description

Glucose sensor site will not have Insupatch

Glucose sensor site with Insupatch

Outcomes

Primary Outcome Measures

Point accuracy of the continuous glucose monitor plus Insupatch (CGM+IP) by mean absolute relative difference (MARD) calculation of sensors with and without IP use.
Point accuracy of the continuous glucose monitor plus Insupatch (CGM+IP) by mean absolute relative difference (MARD) calculation of sensors with and without IP use, comparing sensor glucose readings and signal data to serum Yellow Springs Instrument (YSI) glucose measurements, with each subject acting as his or her own control.

Secondary Outcome Measures

Full Information

First Posted
September 26, 2013
Last Updated
March 4, 2020
Sponsor
Yale University
Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
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1. Study Identification

Unique Protocol Identification Number
NCT01954459
Brief Title
Warming up to Sensors: Does Site Warming Improve Continuous Glucose Monitor Performance?
Official Title
Warming up to Sensors: Does Site Warming Improve Continuous Glucose Monitor Performance?
Study Type
Interventional

2. Study Status

Record Verification Date
March 2020
Overall Recruitment Status
Terminated
Why Stopped
unable to complete due to lack of funding
Study Start Date
September 2013 (undefined)
Primary Completion Date
June 2016 (Actual)
Study Completion Date
June 2016 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Yale University
Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
This study will investigate the effect of wearing a small warming patch, the InsuPatch, at the site of the continuous glucose monitor (CGM), also called a sensor. Specifically, we will be looking to see if using the InsuPatch (IP) improves the accuracy of the continuous glucose monitor.
Detailed Description
Hypotheses: Warming of the skin and subcutaneous tissue with the InsuPatch device will improve the accuracy of a CGM as compared to a CGM used alone when both are calibrated with a standard laboratory quality glucose measuring reference standard. Warming of the skin and subcutaneous tissue with the InsuPatch device will reduce the lag time of the CGM, as compared to a CGM used alone when both are calibrated with a standard laboratory quality glucose measuring reference standard. The combination of the InsuPatch device and a CGM will be well-tolerated and not cause skin irritation.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Type 1 Diabetes
Keywords
Type 1 diabetes, Continuous glucose sensor, Insupatch

7. Study Design

Primary Purpose
Other
Study Phase
Early Phase 1
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
11 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Sensor alone
Arm Type
Active Comparator
Arm Description
Glucose sensor site will not have Insupatch
Arm Title
Sensor with Insupatch
Arm Type
Experimental
Arm Description
Glucose sensor site with Insupatch
Intervention Type
Device
Intervention Name(s)
Insupatch
Intervention Description
Device which applies local heating at 40 degrees Celsius to the vicinity of the subcutaneous site of glucose sensor.
Intervention Type
Device
Intervention Name(s)
Continuous glucose sensor
Intervention Description
Glucose sensor inserted without warming patch
Primary Outcome Measure Information:
Title
Point accuracy of the continuous glucose monitor plus Insupatch (CGM+IP) by mean absolute relative difference (MARD) calculation of sensors with and without IP use.
Description
Point accuracy of the continuous glucose monitor plus Insupatch (CGM+IP) by mean absolute relative difference (MARD) calculation of sensors with and without IP use, comparing sensor glucose readings and signal data to serum Yellow Springs Instrument (YSI) glucose measurements, with each subject acting as his or her own control.
Time Frame
4 hours after lunch, 8 hours after breakfast

10. Eligibility

Sex
All
Minimum Age & Unit of Time
8 Years
Maximum Age & Unit of Time
44 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Clinical diagnosis of type 1 diabetes and using daily insulin therapy for at least 12 months. Age 8 years to less than 45 years old. Subject understands the study protocol and agree to comply with it. Subject is on insulin pump or injection-based basal-bolus therapy Subject comprehends written English. For females, subject not intending to become pregnant during the study. Informed Consent Form signed by the subject No history of altered skin integrity, poor wound healing, adhesive allergy, or previous infection from sensor wear. Hemoglobin A1C ≤10% Exclusion Criteria: The presence of a significant medical disorder that in the judgment of the investigator will affect the wearing of the sensors or the completion of any aspect of the protocol The presence of any of the following diseases: a. Current use of systemic corticosteroids (within the last week) b. Other major illness that in the judgment of the investigator might interfere with the completion of the protocol i. Adequately treated thyroid disease and celiac disease do not exclude subjects from enrollment Inpatient psychiatric treatment in the past 6 months for either the subject or the subject's primary care giver (i.e., parent or guardian) Current or past use of a continuous glucose sensor is not an exclusion criterion. Active skin condition that would affect sensor placement Use of acetaminophen or Vitamin C supplement within the last 7 days Subject is deemed by the Investigator to be unwilling or unable to follow the protocol; Pregnancy A negative urine pregnancy test will be required for all premenopausal women who are not surgically sterile. Subjects who become pregnant will be discontinued from the study. -
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Camille Michaud, MD
Organizational Affiliation
Yale University
Official's Role
Principal Investigator
Facility Information:
Facility Name
Yale University School of Medicine
City
New Haven
State/Province
Connecticut
ZIP/Postal Code
06520
Country
United States

12. IPD Sharing Statement

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Warming up to Sensors: Does Site Warming Improve Continuous Glucose Monitor Performance?

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