Diabetes technology

Trial of Hybrid Closed-Loop Control in Young Children with Type 1 Diabetes

N Engl J MedPublished Randomised controlled trial

Primary result · Time in range 70 to 180 mg/dLResult — go to the resultMean adjusted difference 12.4 percentage points 95% CI 9.5–15.3

Authors' conclusion

In this trial involving young children with type 1 diabetes, the glucose level was in the target range for a greater percentage of time with a closed-loop system than with standard care.

Study context

Population
Children aged ≥2 to <6 years with T1D; baseline HbA1c 5.2 to 11.5%randomized 2:1
Participants
102 children
Comparison
Closed-loop insulin delivery vs standard care
  • Closed-loopn = 68
  • Standard caren = 34reference
Primary endpoint
Percentage of time with glucose in target range 70 to 180 mg/dL, by CGM
Follow-up
13-week follow-up
Methodological detailsmulticenter, randomized 2:1, Closed-loop initiation virtual in 55 patients (81%)
  • Multicenter
  • Randomized 2:1
  • Closed-loop initiation virtual in 55 patients (81%)

Primary result

Time in range 70 to 180 mg/dL

Mean adjusted difference

12.4 percentage points

95% CI 9.5–15.3

P < 0.001

By group

Closed-loopvs Standard care
mean adjusted difference 12.4 percentage points (95% CI 9.5–15.3); P < 0.001

As reported in the abstract

Secondary outcomes

Time in range at baseline

Time >250 mg/dL, mean glucose, HbA1c, time <70 mg/dL

Similar treatment effects favoring closed-loop on time >250 mg/dL, mean glucose and HbA1c
No significant between-group difference in time <70 mg/dL

Safety

Events

OutcomeClosed-loopStandard care
Severe hypoglycemia21
DKA1— not stated in the abstract

— not stated in the abstract

Original publication

Trial of Hybrid Closed-Loop Control in Young Children with Type 1 Diabetes. N Engl J Med. Published 16 March 2023. doi:10.1056/nejmoa2210834

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