Diabetes technology

A Randomized Trial of Automated Insulin Delivery in Type 2 Diabetes

N Engl J MedPublished Randomised controlled trial

Primary result · HbA1cResult — go to the resultMean adjusted difference −0.6 percentage points 95% CI −0.8 to −0.4

Authors' conclusion

In this 13-week, randomized, controlled trial involving adults with insulin-treated type 2 diabetes, AID was associated with a greater reduction in glycated hemoglobin levels than CGM alone.

Study context

Population
Adults with insulin-treated T2Drandomized 2:1
Participants
319 adults
Comparison
Automated insulin delivery (AID) vs continuation of pretrial insulin-delivery method; both with continuous glucose monitoring (CGM)
Primary endpoint
Glycated hemoglobin level
Follow-up
13 weeks
Methodological detailsmulticentre
  • Multicentre

Primary result

HbA1c

Mean adjusted difference

−0.6 percentage points

95% CI −0.8 to −0.4

P < 0.001

By group

AIDvs Control
mean adjusted difference −0.6 percentage points (95% CI −0.8 to −0.4); P < 0.001

As reported in the abstract

Further findings

OutcomeAIDControlMean difference (percentage points) (95% CI)P value
Time in target glucose range 70–180 mg/dL (TIR) · 13 weeksmean 64 ± 16 %mean 52 ± 21 %14 (11–17)P < 0.001
Baseline48±24%51±21%

Other multiplicity-controlled CGM hyperglycemia outcomes

All significantly better with AID than control

Safety

OutcomeAID
Hypoglycemia
Severe hypoglycemia eventone patient

Hypoglycemia

CGM-measured hypoglycemia frequency low in both groups

Original publication

A Randomized Trial of Automated Insulin Delivery in Type 2 Diabetes. N Engl J Med. Published 19 March 2025. doi:10.1056/nejmoa2415948

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