Closed-loop Insulin Delivery in Pregnant Women With Type 1 Diabetes

NCT ID: NCT04520971

Last Updated: 2024-12-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

95 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-15

Study Completion Date

2023-05-10

Brief Summary

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Multi-centric open-label randomized controlled trial (RCT) with 11 Belgian centers and one Dutch center in pregnant women with type 1 diabetes to assess safety, efficacy, feasibility and cost-effectiveness of 780 MiniMed Medtronic hybrid closed-loop insulin system (intervention group) compared to standard of care therapy (control group).

Detailed Description

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Women will be recruited with a singleton pregnancy up to 12 weeks gestation. Participants will be randomized 1/1 to 780 pump or standard of care (continue with current treatment of insulin pump without closed-loop or multiple daily insulin injections). Participants will be stratified according to study center, baseline Hba1c, and method of insulin delivery (pump or injections). Participants will be followed-up till delivery. To account for differences in the type of continuous glucose monitoring (CGM) used between the intervention group and the control group, the same CGM system as in the 780 insulin pump group (Guardian™ Sensor 3 and once available the Guardian 4 sensor) will be used in a blinded manner in the control group to collect CGM data during at least four different time points in pregnancy: at 14-17 weeks, 20-23 weeks, 26-29 weeks and 33-36 weeks.

Conditions

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Type1 Diabetes

Keywords

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closed-loop insulin delivery

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

1/1 randomization to 780G or continue with standard of care
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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780G closed-loop

780 closed-loop insulin delivery system

Group Type EXPERIMENTAL

780G

Intervention Type DEVICE

780G closed-loop insulin delivery system (Medtronic)

standard of care

standard of care treatment (continue with current treatment of insulin pump without closed-loop or multiple daily insulin injections).

Group Type ACTIVE_COMPARATOR

standard of care

Intervention Type DEVICE

continue with standard of care treatment (pump without closed-loop or MDI)

Interventions

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780G

780G closed-loop insulin delivery system (Medtronic)

Intervention Type DEVICE

standard of care

continue with standard of care treatment (pump without closed-loop or MDI)

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Women with type 1 diabetes (T1DM), diagnosed with T1DM at least 1 year before pregnancy
* Age 18-45 years
* A singleton pregnancy confirmed by b-HCG in blood and/or ultrasound-confirmed gestational age up to 11 weeks and 6 days.
* Treated with intensive insulin treatment (either MDI or insulin pump). A closed-loop system can only be used in manual mode.
* Have a booking HbA1c (measurement taken at the first antenatal clinic visit after confirmed pregnancy) level ≤10%.
* Participants need to speak and understand Flemish, French or English and have e-mail access.

Exclusion Criteria

* The use of a closed-loop insulin delivery system in auto mode.
* A twin (multiple) pregnancy
* A physical or psychological disease likely to interfere with the conduct of the study (based on the evaluation by the treating physician)
* Medications known to interfere with glucose metabolism
* An insulin dose of ≥1.5 units/kg
* Known allergy to adhesives due to infusion set and/or CGM
Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Ghent

OTHER

Sponsor Role collaborator

Universitair Ziekenhuis Brussel

OTHER

Sponsor Role collaborator

University Hospital, Antwerp

OTHER

Sponsor Role collaborator

Imelda Hospital, Bonheiden

OTHER

Sponsor Role collaborator

AZ Sint-Jan AV

OTHER

Sponsor Role collaborator

AZ Delta

OTHER

Sponsor Role collaborator

Onze Lieve Vrouw Hospital

OTHER

Sponsor Role collaborator

General Hospital Groeninge

OTHER

Sponsor Role collaborator

AZ Nikolaas

OTHER

Sponsor Role collaborator

AZ Turnhout

OTHER

Sponsor Role collaborator

Cliniques universitaires Saint-Luc- Université Catholique de Louvain

OTHER

Sponsor Role collaborator

Amsterdam UMC

OTHER

Sponsor Role collaborator

Universitaire Ziekenhuizen KU Leuven

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Katrien Benhalima, MD PhD

Role: PRINCIPAL_INVESTIGATOR

UZ Leuven

Locations

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OLV Aalst-Asse

Aalst, Oost-Vlaanderen, Belgium

Site Status

Imelda Bonheiden

Bonheiden, , Belgium

Site Status

AZ St Jan Brugge

Bruges, , Belgium

Site Status

UZ Brussel

Brussels, , Belgium

Site Status

UCLouvain

Brussels, , Belgium

Site Status

UZ Gent

Ghent, , Belgium

Site Status

AZ Groeninge Kortrijk

Kortrijk, , Belgium

Site Status

UZ Leuven

Leuven, , Belgium

Site Status

AZ Roeselare

Roeselare, , Belgium

Site Status

AZ Nikolaas

Sint-Niklaas, , Belgium

Site Status

AZ Turnhout

Turnhout, , Belgium

Site Status

Amsterdam UMC

Amsterdam, , Netherlands

Site Status

Countries

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Belgium Netherlands

References

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Beunen K, Van Wilder N, Ballaux D, Vanhaverbeke G, Taes Y, Aers XP, Nobels F, Marlier J, Lee D, Cuypers J, Preumont V, Siegelaar SE, Painter RC, Laenen A, Gillard P, Mathieu C, Benhalima K. Closed-loop insulin delivery in pregnant women with type 1 diabetes (CRISTAL): a multicentre randomized controlled trial - study protocol. BMC Pregnancy Childbirth. 2023 Mar 16;23(1):180. doi: 10.1186/s12884-023-05481-0.

Reference Type BACKGROUND
PMID: 36927458 (View on PubMed)

Benhalima K, Beunen K, Van Wilder N, Ballaux D, Vanhaverbeke G, Taes Y, Aers XP, Nobels F, Marlier J, Lee D, Cuypers J, Preumont V, Siegelaar SE, Painter RC, Laenen A, Gillard P, Mathieu C. Comparing advanced hybrid closed loop therapy and standard insulin therapy in pregnant women with type 1 diabetes (CRISTAL): a parallel-group, open-label, randomised controlled trial. Lancet Diabetes Endocrinol. 2024 Jun;12(6):390-403. doi: 10.1016/S2213-8587(24)00089-5. Epub 2024 Apr 30.

Reference Type RESULT
PMID: 38697182 (View on PubMed)

Other Identifiers

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S64308

Identifier Type: -

Identifier Source: org_study_id