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CompletedNCT00069615Updated Sep 5, 2016

Pilot Study of the GlucoWatch G2 Biographer for the Management of Type 1 Diabetes in Children

A Phase 4 interventional study of GlucoWatch® G2™ Biographer (GW2B) and Continuous Glucose Monitoring System™ (CGMS) in Diabetes Mellitus, Insulin-Dependent, sponsored by Jaeb Center for Health Research. Completed at 6 sites in United States. Open to participants aged 7 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-09-05.

Sponsored by Jaeb Center for Health Research · Phase 4 and Interventional

Phase
Phase 4
Study type
Interventional
Enrollment
15
Allocation
Non-randomized
Ages
7 Years to 17 Years
Sex
All
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Study summary

Devices such as the GlucoWatch G2 Biographer (GW2B), which constantly measure blood sugar levels, may improve the treatment of Type 1 diabetes mellitus in children. This study evaluated the GW2B when used by children in their homes.

Read the detailed description

The proper role of the GW2B in the management of Type 1 diabetes in children has not been determined. As a prelude to a large-scale randomized clinical trial (RCT) to compare the effect on glycemic control, hypoglycemia, and quality of life of using a GW2B versus standard care, the DirecNet Study Group conducted a pilot study to assess the feasibility of the protocol planned for the RCT and to collect data on changes in HbA1c, frequency of hypoglycemia, frequency of skin reactions, and quality of life after using the GW2B for three months.

Fifteen children and adolescents with Type 1 diabetes participated in this study. Each patient was provided with a personal computer for weekly downloading of the GW2B and for completion of questionnaires regarding hypoglycemia and GW2B use. Participants received study telephone calls after 1, 2, and 4 weeks and every 4 weeks thereafter to review their diabetes management. Participants had a follow-up visit at Week 29. The Continuous Glucose Monitoring System was inserted at this visit to assess hypoglycemia over three days. A follow-up visit was performed at Week 30 to measure HbA1c and administer psychosocial questionnaires.

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Conditions studied

  • Diabetes Mellitus, Insulin-Dependent

Keywords

  • Diabetes Mellitus, Insulin-Dependent
  • Type 1 Diabetes
  • Continuous Glucose Monitoring Devices
  • Electronic Data Collection
03

In context

Diabetes Mellitus, Type 1

3,614 studies on the registry are indexed under Diabetes Mellitus, Type 1; 586 are open to participants now.

This study's enrollment of 15 is below the median of 40 across 2,718 interventional studies indexed under Diabetes Mellitus, Type 1.

Browse Diabetes Mellitus, Type 1 studies →

Lead sponsor

Jaeb Center for Health Research is the lead sponsor of 129 studies on the registry; 16 are open to participants now.

Of its 17 completed or terminated interventional studies of FDA-regulated products, 15 (88%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
7 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of Type 1 diabetes
  • Duration of diabetes > 1 year
  • Daily insulin therapy (pump or at least 2 injections/day)
  • Stable insulin regimen; not expected to change administration modality within the next 3 months (e.g., injection user switching to pump)

Exclusion criteria

Exclusion Criteria

  • The presence of skin abnormalities or 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.
  • Prior use of a GWB prescribed for home use (Prior use of a GWB as part of a research study is allowable)
  • The presence of any of the following diseases:

    • Asthma if treated with systemic or inhaled corticosteroids in the last 6 months
    • Cystic fibrosis
    • Other major illness that in the judgment of the investigator might interfere with the completion of the protocol
    • Adequately treated thyroid disease and celiac disease do not exclude
  • 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 use of oral/inhaled glucocorticoids or other medications, which in the judgment of the investigator would be a contraindication to participation in the study.
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Study design

Phase
Phase 4
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants

Interventions

  • DeviceGlucoWatch® G2™ Biographer (GW2B)
  • DeviceContinuous Glucose Monitoring System™ (CGMS)
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What researchers measure

Primary outcomes

  1. Feasibility of using the GlucoWatch G2 Biographer

  2. Feasibility of collecting data from home computers

07

Study locations

6 sites
  • Division of Pediatric Endocrinology and Diabetes, Stanford University
    Stanford, California 94305-5208, United States
  • Barbara Davis Center for Childhood Diabetes, University of Colorado
    Denver, Colorado 80262, United States
  • Department of Pediatrics, Yale University School of Medicine
    New Haven, Connecticut 06519, United States
  • Nemours Children's Clinic
    Jacksonville, Florida 32207, United States
  • Jaeb Center for Health Research
    Tampa, Florida 33647, United States
  • Department of Pediatrics, University of Iowa Carver College of Medicine
    Iowa City, Iowa 52242, United States
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References and documents

Publications

  • Stuart Weinzimer, Katrina Ruedy, Jennifer Fisher, Linda Larson, Jennifer Block, Elizabeth Boland, Keisha Bird, and the Diabetes Research in Children Network (DirecNet) Study Group: Diabetes Research in Children Network (DirecNet) Outpatient Pilot Study to Evaluate the GlucoWatch G2 Biographer (GW2B) in the Management of Type 1 Diabetes (T1DM) in Children. Diabetes Technol Ther 2004; 6(2):280.
  • Stuart Weinzimer, Katrina Ruedy, Linda Larson, Jennifer Block, Jennifer Fisher, Elizabeth Doyle, Keisha Bird, and the Diabetes Research in Children Network (DirecNet) Study Group: Diabetes Research in Children Network (DirecNet) Outpatient Pilot Study to Evaluate the Feasibility of Computer-Based Data Acquisition and Transmission. Pediatr Res 2004; 55 (4 Pt 2):138A.
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 5, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00069615
Responsible party
Sponsor
First posted
Sep 30, 2003
Start date
Feb 2003
Completion
Jun 2003
Last update
Sep 5, 2016

Study contacts

William V Tamborlane, MD
study chair · Yale University
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2016. You cannot join it, but the record below documents what was studied.

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