Automated Insulin Delivery Amongst Pregnant Women With Type 1 Diabetes (AiDAPT)

Norfolk and Norwich University Hospitals NHS Foundation Trust

Status: Completed

Conditions: Diabetes

Treatments: Device: Automated closed-loop insulin delivery (AiD); Device: A standard insulin delivery system

Study type: Interventional

Funder types: Other

Identifiers

NCT04938557

240380

Details and patient eligibility

About

Evaluation of the biomedical and psychosocial impact of automated Closed-Loop (Artificial Pancreas) insulin delivery in women with type 1 diabetes during pregnancy

Full description

An open-label, multi-centre, randomized, two-arm parallel group trial comparing automated closed-loop and standard insulin delivery.

124 pregnant women between 18 and 45 years of age with Type 1 Diabetes of at least 12 months' duration on standard insulin delivery (CSII or MDI) will be recruited through outpatient antenatal diabetes clinics. Women fulfilling the eligibility criteria will be randomized to automated insulin delivery (AiD) or to continue standard patient-directed insulin delivery (CSII or MDI) without AiD. The study will take place within the home and NHS antenatal clinical settings.

Additional blood samples for the research will be obtained at the 24th and 34th week of pregnancy and questionnaires will also be completed by the participant at the 34th week of pregnancy. Following this we will collect information on the birth.

25 of the woman randomised to the closed loop insulin delivery system will also be interviewed to gain more information on, among other things, their existing diabetes management practices, everyday work and family lives and their experience with the device.

Enrollment: 124 patients

Sex: Female

Ages: 18 to 45 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Between 18 and 45 years of age (inclusive).
2. A diagnosis of type 1 diabetes (T1D), as defined by WHO for at least 12 months.
3. A viable pregnancy confirmed by ultrasound, up to 13 weeks and 6 days gestation.
4. Currently on intensive insulin therapy (≥3 injections or CSII).
5. Willingness to use the study devices throughout the trial.
6. HbA1c level ≥48 mmol/mol (≥6.5%) at booking (first antenatal contact) and ≤86 mmol/mol (≤10%) at point of randomization.
7. Able to provide informed consent.
8. Have access to email.

Exclusion criteria

1. Non-type 1 diabetes.
2. Any other physical or psychological disease which, in the opinion of the investigator, is likely to interfere with the normal conduct and interpretation of the study results e.g. untreated coeliac disease or untreated hypothyroidism.
3. Current treatment with drugs known to interfere with glucose metabolism as judged by the investigator such as high dose systemic corticosteroids, non-selective beta-blockers and MAO inhibitors.
4. Known or suspected allergy against insulin.
5. Women with advanced nephropathy (eGFR <45), severe autonomic neuropathy, uncontrolled gastroparesis or severe proliferative retinopathy, as judged by the investigator, that is likely to interfere with the normal conduct of the study and interpretation of study results.
6. Very good or very poor glycaemic control i.e. first antenatal HbA1c <48 mmol/mol (<6.5%) and current HbA1c >10% (>86 mmol/mol). Women who enter pregnancy with HbA1c >10% (>86 mmol/mol) may participate if they achieve HbA1c ≤10% (≤86 mmol/mol) before randomization.
7. Total daily insulin dose 1.5 IU/kg.
8. Severe visual or hearing impairment.
9. Unable to speak and understand English.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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124 participants in 2 patient groups

An Automated Closed-loop Insulin Delivery (AiD) System.

Experimental group

Description:

The intervention being evaluated in this trial is automated closed-loop insulin delivery (AiD). The closed-loop system comprises of three components: an insulin pump, a continuous glucose monitor (CGM) and a computer-based model predictive control (MPC) algorithm to compute information from the CGM into a recommended insulin dose.

Treatment:

Device: Automated closed-loop insulin delivery (AiD)

A Standard Insulin Delivery System

Active Comparator group

Description:

This can include either: an insulin pump (Continuous Subcutaneous Insulin Infusion - CSII) or multiple daily injections (MDI) without closed-loop.

Treatment:

Device: A standard insulin delivery system