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OpenTrials
Completed

NCT Number: NCT05505565

Tolerability, Acceptance, and Utility of Intermittent CGM Use in Youth With Prediabetes

We are evaluating whether intermittent use of continuous glucose monitors (CGMs) in addition to standard nutritional counseling and physical activity counseling is associated with improved metabolic health for youth with pre-diabetes (PD).

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Key information

Age range

11 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Children's of Alabama

Birmingham, Alabama, 35233, United States

About this study

The purpose of this research study is to test if CGMs are tolerable to youth with pre-diabetes (PD) and their caregivers. We are also evaluating if CGMs add benefit to standard treatment in youth with prediabetes. The CGM in question, Abbott Freestyle Libre 2 is approved by the Food and Drug Administration (FDA) to treat patients aged 4 and up with diabetes. We want to determine if this CGM may benefit people who have PD. People who enter the study will either receive standard medical care for prediabetes or receive standard medical care for prediabetes plus use a CGM for 2 weeks each month to receive real-time biofeedback on their glucose levels during the day.

There will be 3 visits over a 6-month period, baseline, 3-month, and 6-month visits. At each visit fasting labs will be obtained including: complete metabolic panel, lipid panel, pro-insulin, c-peptide, insulin. Anthropomorphics including body mass index, waist circumference, and hip circumference will be monitored.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 11 or older
  • English-speaking
  • stable metformin dose for 1 month prior to enrollment or no metformin use
  • baseline A1c of 5.7-6.4%
  • BMI > = 85% for age

Exclusion criteria

  • BMI < 85% for age
  • chronic steroid use
  • diagnosis of type 1 diabetes, type 2 diabetes, other forms of diabetes
  • current or history of malignancy

Treatment and study plan

Abbott Freestyle Libre 2

Device

Subjects will be educated on use of Abbott Freestyle Libre 2 and educated on how daily activities impact glucose.

Standard physical activity and nutritional counseling for prediabetes management

Other

Subjects will be advised on recommendations for nutrition and activity goals for preventing progression of prediabetes.

Primary outcomes

  1. CGM Acceptability

    Time frame: 6 months

    Caregiver and patient acceptability of CGM use

  2. Change in Measured % HbA1c From Baseline to 6-months

    Time frame: 6 months

    The difference in measured percentage of glycosylated hemoglobin (hemoglobin A1c) was obtained by subtracting the 6-month value from the baseline value for all subjects with paired data available. A negative result indicates a reduction (improvement) in hemoglobin A1c over the period.

Secondary outcomes

  1. Change in HOMA-IR From Baseline to 6-months.

    Time frame: 6 months

    Homeostatic model assessment of insulin resistance (HOMA-IR) at baseline and 6-month were calculated. HOMA-IR = fasting glucose (mg/dL) x fasting insulin (uIU/mL) / 405. Lower values indicate greater insulin sensitivity with values >2.5 consistent with insulin resistance. The difference in 6-month from baseline was determined for all with paired data available. A negative result indicates a reduction (improvement) in HOMA-IR over the period.

  2. Change in Triglyceride, HDL, LDL, and Total Cholesterol From Baseline to 6-month

    Time frame: 6 months

    Changes in measured triglycerides, HDL, LDL, and total cholesterol were calculated for all subjects with paired data available. A negative result indicates a reduction (improvement) in triglycerides, LDL, and total cholesterol over the period. A negative result indicates a reduction (worsening) of HDL over the same study period.

  3. Changes in Liver Enzymes From Baseline to 6-months.

    Time frame: 6 months

    Alanine transferase (ALT) and aspartate aminotransferase (AST) were measured at baseline and 6-months. A negative result indicated a decrease (improvement) in the value. While 17 CGM+Treatment subjects returned for the final visit, only 14 had liver enzymes measured. While 8 control subjects returned for the final visit, only 6 had liver enzymes measured.

  4. Glycemic Metrics

    Time frame: 6 months

    CGM metrics collected included the percentage of time in the target range and percentage of time with glucose >140mg/dL.

Sponsors and collaborators

Lead sponsor

University of Alabama at Birmingham

Other

Collaborators

  • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Registry information

Official study title

Continuous Glucose Monitors in the Management of Youth With Prediabetes

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Aug 17, 2022
Registry last updated
Jun 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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