Automated insulin delivery during the first 6 months postpartum (AiDAPT): A prespecified extension study

Lee, Tara T. M., Collett, Corinne, Bergford, Simon, Hartnell, Sara, Scott, Eleanor M., Lindsay, Robert S., Hunt, Katharine F., McCance, David R., Reynolds, Rebecca M., Wilinska, Malgorzata E., Sibayan, Judy, Kollman, Craig, Hovorka, Roman and Murphy, Helen R. and AiDAPT Collaborative Group (2025) Automated insulin delivery during the first 6 months postpartum (AiDAPT): A prespecified extension study. The Lancet Diabetes & Endocrinology. ISSN 2213-8587

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Abstract

Background: Clinical guidelines in the UK and elsewhere do not specifically address hybrid closed loop (HCL) use in the postpartum period when the demands of caring for a newborn are paramount. Our aim was to evaluate the safety and efficacy of HCL use during the first 6 months postpartum compared with standard care. Methods: In this prespecified extension to a multicentre, randomised controlled trial, pregnant women with type 1 diabetes at nine UK sites were followed up for 6 months postpartum. Eligible participants (AiDAPT participants recruited after the implementation of the postpartum protocol amendment approval, those still pregnant or within six months of delivery at the time of amendment implementation and still using HCL or continuous glucose monitoring [CGM] therapy) continued their randomly assigned treatment, either standard insulin therapy with CGM or HCL therapy (CamAPS FX system version 0.3.1, CamDiab, Cambridge, UK). Participants were randomised in a 1:1 ratio with stratification by clinical site using randomly permuted block sizes of 2 or 4. The primary outcome was the between-group difference in percentage time in range ([TIR] 3·9–10·0 mmol/L [70–180mg/dL]), measured during the periods of month 0 up to 3, months 3 to 6, and over 6 months postpartum. The study is registered at ClinicalTrials.gov (ISRCTN56898625) and is complete. Findings: Of the 124 AiDAPT trial participants, 66 (53%) were ineligible for inclusion in the postpartum extension, and 57 participants consented to continue their treatment per original random allocation. The mean age was 31 years (SD 4), and all participants had early pregnancy HbA1c 59·4 mmol/mol (SD 10·5 [7·6% SD 1·0%]). In the 6 months postpartum, mean time with glucose levels within the target range was higher in the HCL group compared with the standard care group (72% [SD 12%] vs 54% [17%]), with an adjusted treatment difference of 15% (95% CI 7 to 22). Results for hyperglycaemia (>10·0 mmol/L) and mean CGM glucose also favoured HCL (–14% [95% CI –23% to –6%] and –1·3 mmol/L [–2·3 to –0·3], respectively). Hypoglycaemia rates were low, with no between-group differences (2·4% vs 2·6%). There were no treatment effect changes depending on postpartum period (0 up to 3 months vs 3 to 6 months) and no unanticipated safety problems. Interpretation: Participants in the HCL group maintained 70% TIR during the first 6 months postpartum, supporting continued use of HCL rather than standard insulin therapy for people with diabetes once they have given birth.

Item Type: Article
Additional Information: Funding information: The trial is funded by the National Institute for Health Research (NIHR) Efficacy and Mechanism Evaluation programme (NIHR EME reference 16/35/01). The views expressed in this publication are those of the authors and not necessarily those of the UK National Health Service, the NIHR, or the UK Department of Health. CGM devices were provided by Dexcom at a discounted price. Data management and statistical centre support from JDRF awards #22‑2013‑266 and #2‑RSC‑2019‑828‑M‑N. TTML is funded by a Diabetes Research & Wellness Foundation Sutherland‑Earl Clinical Fellowship (reference SECF/21).
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Faculty of Medicine and Health Sciences > School of Health Sciences
UEA Research Groups: Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health
Faculty of Medicine and Health Sciences > Research Centres > Population Health
Faculty of Medicine and Health Sciences > Research Groups > Norwich Clinical Trials Unit
Faculty of Medicine and Health Sciences > Research Groups > Cardiovascular and Metabolic Health
Faculty of Science > Research Groups > Norwich Epidemiology Centre
Faculty of Medicine and Health Sciences > Research Groups > Norwich Epidemiology Centre
Faculty of Medicine and Health Sciences > Research Groups > Epidemiology and Public Health
Faculty of Medicine and Health Sciences > Research Groups > Health Services and Primary Care
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Depositing User: LivePure Connector
Date Deposited: 29 Jan 2025 15:36
Last Modified: 30 Jan 2025 01:42
URI: https://ueaeprints.uea.ac.uk/id/eprint/98333
DOI:

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