Study of MiniMed 640G Insulin Pump with SmartGuard in Prevention of Low Glucose Events in Adults with Type 1 Diabetes (SMILE): Design of a Hypoglycemia Prevention Trial with Continuous Glucose Monitoring Data as Outcomes

Harold W. De Valk, Sandrine Lablanche, Emanuele Bosi, Pratik Choudhary, Julien Da Silva, Javier Castaneda, Linda Vorrink, Simona De Portu, Ohad Cohen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Background: Sensor-integrated pump systems with low-glucose suspend (also known as threshold suspend) functions have markedly transformed the management of type 1 diabetes, but most studies to date have excluded patients at high risk of hypoglycemia. The SMILE study is investigating the efficacy of the MiniMed™ 640G insulin pump with the SmartGuard™ predictive low-glucose management (PLGM) feature in the prevention of hypoglycemia in adults with type 1 diabetes, who are at high risk of hypoglycemia. Methods: SMILE is a prospective, randomized, open-label, controlled trial being undertaken in four European countries and Canada. Following a 2-week run-in phase, eligible participants will be randomized to use either the MiniMed 640G system with continuous glucose monitoring (CGM) and the SmartGuard PLGM feature on continuously for 24 weeks (treatment arm), or the MiniMed 640G without CGM and with blinded continuous glucose measurements between weeks 10-12, 16-18, and 22-24 (control arm). The primary endpoint is the mean number of hypoglycemic events, defined as sensor glucose ≤55 mg/dL (≤3.0 mmol/L) for >20 consecutive minutes. Secondary endpoints include various glycemic indices in the hypoglycemic and hyperglycemic ranges, as well as glycated hemoglobin. Data on patient-reported outcomes such as hypoglycemia awareness and treatment satisfaction will also be collected. Conclusions: It is anticipated that the SMILE study will provide important insights into the effectiveness of SmartGuard technology in adult patients with type 1 diabetes.

Original languageEnglish
Pages (from-to)758-766
Number of pages9
JournalDiabetes Technology and Therapeutics
Volume20
Issue number11
DOIs
StatePublished - Nov 2018
Externally publishedYes

Funding

FundersFunder number
MScript Ltd.
Medtronic International Trading Sàrl

    Keywords

    • Continuous glucose monitoring
    • Hypoglycemia
    • Insulin pump therapy
    • Sensor-integrated pump therapy
    • Type 1 diabetes mellitus

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