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CGM Use in Poorly Controlled Youth With Type 1 Diabetes

IMPaCT: IMPlementing Continuous Glucose Monitoring in High-risk, Poorly Controlled Children With Type 1 Diabetes

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04721145
Acronym
IMPaCT
Enrollment
26
Registered
2021-01-22
Start date
2021-01-25
Completion date
2022-06-28
Last updated
2023-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

High Blood Sugar, Hypoglycemia, Type 1 Diabetes

Keywords

Continuous Glucose Monitoring, Time in range, Hemoglobin A1c

Brief summary

The purpose of this prospective study is to determine if trial use of a Dexcom G6 CGM system for a 10 day wear period in high risk, poorly controlled pediatric Type 1 diabetes patients increases uptake of personal CGM use, and improves short-term time in range glucose control.

Interventions

Eligible patients will have a Dexcom G6 Continuous Glucose Monitor placed for 10 days.

Sponsors

Johns Hopkins University
Lead SponsorOTHER
DexCom, Inc.
CollaboratorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
5 Years to 21 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of Type 1 diabetes for \>3 months

Exclusion criteria

* CGM use in the last 6 months

Design outcomes

Primary

MeasureTime frameDescription
Change in Personal CGM UseBaseline and 3 monthsEvaluate whether there is any change in uptake of personal CGM after 10-day trial.

Secondary

MeasureTime frameDescription
Change in the Percent Time in Range Glucose Control1-5 days and 6-10 daysChanges in time in range glucose control from 1-5 days to 6-10 days from the Dexcom CGM
Change in Hemoglobin A1cBaseline, 3-6 monthsChanges in HbA1c from baseline to next available A1c at 3-6 month follow up visit
Using Personal CGM3-6 monthsPercentage of participants using CGM at time of follow up, of those who reported wanting a personal CGM

Countries

United States

Participant flow

Participants by arm

ArmCount
Dexcom G6 Continuous Glucose Monitor
Children with type 1 diabetes will wear a continuous glucose monitor (CGM) for 10 days. Dexcom G6 Continuous Glucose Monitor: Eligible patients will have a Dexcom G6 Continuous Glucose Monitor placed for 10 days.
26
Total26

Baseline characteristics

CharacteristicDexcom G6 Continuous Glucose Monitor
Age, Continuous14.1 years
STANDARD_DEVIATION 2.9
HbA1c10.7 Percentage
STANDARD_DEVIATION 2.4
Insurance
Private Insurance
9 Participants
Insurance
Public Insurance
17 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Hispanic
3 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Multi-racial (American Indian / White)
1 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Non-Hispanic Black
11 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Non-Hispanic White
11 Participants
Region of Enrollment
United States
26 Participants
Sex: Female, Male
Female
9 Participants
Sex: Female, Male
Male
17 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 26
other
Total, other adverse events
1 / 26
serious
Total, serious adverse events
5 / 26

Outcome results

Primary

Change in Personal CGM Use

Evaluate whether there is any change in uptake of personal CGM after 10-day trial.

Time frame: Baseline and 3 months

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Dexcom G6 Continuous Glucose MonitorChange in Personal CGM UseWants a personal CGM22 Participants
Dexcom G6 Continuous Glucose MonitorChange in Personal CGM UseDoes not want a personal CGM4 Participants
Secondary

Change in Hemoglobin A1c

Changes in HbA1c from baseline to next available A1c at 3-6 month follow up visit

Time frame: Baseline, 3-6 months

Population: 20/26 participants had a follow up A1c lab available.

ArmMeasureGroupValue (MEAN)Dispersion
Dexcom G6 Continuous Glucose MonitorChange in Hemoglobin A1cBaseline10.9 PercentageStandard Deviation 2.6
Dexcom G6 Continuous Glucose MonitorChange in Hemoglobin A1c3-6 month follow up10.8 PercentageStandard Deviation 2.6
Secondary

Change in the Percent Time in Range Glucose Control

Changes in time in range glucose control from 1-5 days to 6-10 days from the Dexcom CGM

Time frame: 1-5 days and 6-10 days

Population: Only 15/26 participants had data from both periods

ArmMeasureGroupValue (MEAN)Dispersion
Dexcom G6 Continuous Glucose MonitorChange in the Percent Time in Range Glucose Control1-5 days41.9 Percentage of time in rangeStandard Deviation 21.2
Dexcom G6 Continuous Glucose MonitorChange in the Percent Time in Range Glucose Control6-10 days32.8 Percentage of time in rangeStandard Deviation 15.2
Secondary

Using Personal CGM

Percentage of participants using CGM at time of follow up, of those who reported wanting a personal CGM

Time frame: 3-6 months

Population: 21/26 participants wanted a personal CGM AND completed 3-6 month follow-up. (Of the total participants 4 participants did not want CGM. 1 participant had no 3-6 month follow up. Thus, this analysis includes the remaining 21 participants.)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Dexcom G6 Continuous Glucose MonitorUsing Personal CGM9 Participants

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026