Background: Only three studies have directly compared the efficacy of dual-hormone (DH) automated insulin delivery (AID) systems and single-hormone (SH) AID on overnight glucose management in pediatric people living with type 1 diabetes (PPWT1D) . Their conclusions differ. Pooling data could lead to stronger conclusions.

Methods: Pooled data from 3 open-label, randomized, controlled, crossover studies on comparing DH-AID and SH-AID among PPWT1D (8-17 y/o) . The primary outcome was time in range% (TIR%) overnight (00:00-06:00) based on continuous glucose monitoring. Paired t-test was applied to compare the two groups.

Results: Records from 50 PPWT1D [median (Q1-Q3) age: 14.0 years (11.8, 16.0) , mean ± SD HbA1c: 8.2 ± 0.8%] provided 246 nights of data (Table) . TIR% [ (median (IQR) ] for SH-AID and DH-AID was 91.3% (58.3, 100.0) and 94.4% (76.4, 100.0) , respectively (P=0.024) . DH-AID was superior to SH-AID in reducing time in hypo- (<3.9 mmol/L) and hyperglycemia (>13.9 mmol/L) but not glycemic variability.

Conclusion: DH-AID has the potential to provide better overnight glucose management than SH-AID in PPWT1D.


Z.Wu: Other Relationship; Eli Lilly and Company. V.Messier: None. M.Lebbar: None. R.Rabasa-lhoret: Consultant; HLS Therapeutics Inc., Pfizer Inc., Other Relationship; Abbott Diabetes, AstraZeneca, Boehringer Ingelheim International GmbH, Dexcom, Inc., Eli Lilly and Company, Insulet Corporation, Janssen Pharmaceuticals, Inc., Medtronic, Merck & Co., Inc., Novo Nordisk Canada Inc., Sanofi, Vertex Pharmaceuticals Incorporated, Research Support; Canadian Institutes of Health Research, Cystic Fibrosis Canada, Diabetes Canada, Fondation Francophone pour la Recherche en Diabète (FFRD) , JDRF, National Institutes of Health, Société Francophone du Diabète (SFD) , Speaker's Bureau; Canadian Medical & Surgical Knowledge Translation Research Group (CMS) , CPD Network, Tandem Diabetes Care, Inc.


Diabetes Canada grant (OG-2-12-3868-RR,OG-2-13-42P, OG-3-14-4500-RR) and Fondation JA De Sève

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