In Children and Adolescents with Type 1 Diabetes, G7 Continuous Glucose Monitoring System Maintains Accuracy Across Wear Days, Glucose Ranges, and Rates of Glucose Change

In children and adolescents with type 1 diabetes (T1D), the G7 real-time continuous glucose monitoring (RT-CGM) system demonstrated accuracy across wear days, glucose ranges, and rates of glucose change. Over 10.5 days, RT-CGM data from 28 participants aged 2 to 6 years and 127 participants aged 7 to 17 were collected and compared with blood glucose measurements. In young children aged 2 to 6, overall MARD and %20/20 agreement rates were 9.3% and 91.5%, respectively. In older children and adolescents aged 7 to 17 years, arm- and abdomen-placed G7 sensor MARD values were 8.1% and 9.0%, respectively, and overall %20/20 values were 95.3% and 92.9%, respectively. These results are consistent with those of the G6 system in children and adolescents with T1D and with an earlier study of the G5 system that evaluated accuracy at different insertion sites. Compared with the G6 RT-CGM system, the G7 has a shorter warm-up period (27 minutes vs 2 hours), making it possible for youth and caregivers of young children to obtain glucose data more quickly for diabetes management decisions. According to the authors, while day 1 accuracy tends to be lower across CGM devices, the accuracy of the G7—coupled with its shorter warm-up period—should improve the sensor experience in young users. The G7 RT-CGM was recently FDA approved for use in all individuals with diabetes aged 2 years and older, and having data specific to use in children and adolescents can be of value for managed care and payer professionals in developing coverage policies.

Laffel LM, Bailey TS, Christiansen MP, Reid JL, Beck SE. Accuracy of a Seventh-Generation Continuous Glucose Monitoring System in Children and Adolescents with Type 1 Diabetes. J Diabetes Sci Technol. 2022:19322968221091816.