Comparison of Real-tiMe ContInuous gLucosE moNitoriNg With Self-monitorIng of Blood Glucose in Young AduLts With Type 1 diabeteS (MILLENNIALS)

NHS Foundation Trust

Status: Completed

Conditions: Diabetes Mellitus, Type 1

Treatments: Device: Self-monitoring of blood glucose; Device: Real-time continuous glucose monitoring

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT03445377

R04778

Details and patient eligibility

About

The main objective of this study is to determine whether real-time continuous glucose monitoring (CGM) for 8 weeks is more efficacious compared to self-monitoring of blood glucose (SMBG) in young adults with type 1 diabetes.

Full description

This is an open-label, multi-centre, randomised, crossover design study, involving a 2-week run-in period with blinded CGM, followed by two 8 weeks study periods during which subjects will monitor daily glucose levels either with real-time CGM or SMBG in random order. Subjects will wear a blinded CGM for a 3-week period during the Control phase. A total of up to 40 subjects (aiming for 30 completed subjects) aged 16 to 24 years with T1D will be recruited through diabetes clinics and other established methods in participating centres. Subjects who drop out of the study within the first 2 weeks of the first intervention period will be replaced.

Subjects will receive appropriate training in the use of real-time CGM. Subjects will have regular contact with the study team during the study.

The primary outcome is time spent in target range between 3.9 and 10.0 mmol/L as recorded by CGM. Secondary outcomes are the HbA1c, time spent with glucose levels above and below target, as recorded by CGM, and other CGM-based metrics. Measures of subject's responses in terms of daily diabetes management, diabetes distress and diabetes technology use and acceptance will also be evaluated in this study.

Enrollment: 32 patients

Sex: All

Ages: 16 years to 297 months old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Age between 16 - 24 years old (inclusive)
2. Type 1 diabetes, as defined by WHO for at least 1 year or is confirmed C-peptide negative
3. HbA1c 7.5 - 14.0% based on analysis from local laboratory or equivalent within 1 months of enrolment
4. Treated with insulin pump or MDI
5. Has a Smart phone compatible with Dexcom G5 or similar
6. Willingness to wear study devices
7. Willing to follow study specific instructions
8. Literate in English

Exclusion criteria

1. Non-type 1 diabetes mellitus including those secondary to chronic disease
2. Any other physical or psychological disease likely to interfere with the normal conduct of the study
3. Untreated celiac disease or hypothyroidism
4. Current or planned users of real-time or flash (Libre) glucose monitoring sensors
5. Current treatment with drugs known to interfere with glucose metabolism, e.g. systemic corticosteroids, Metformin, SGLT2 inhibitors, GLP-1 agonists, non-selective beta-blockers and MAO inhibitors etc.
6. Regular use of acetaminophen
7. Medically documented allergy towards the adhesive (glue) of plasters or unable to tolerate tape adhesive in the area of sensor placement
8. Serious skin diseases (e.g. psoriasis vulgaris, bacterial skin diseases) located at places of the body, which could potentially be used for localisation of the glucose sensor)
9. Lack of reliable telephone facility for contact
10. Known or suspected allergy against insulin
11. Severe visual impairment
12. Severe hearing impairment
13. Subject not proficient in English

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: None (Open label)

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32 participants in 2 patient groups, including a placebo group

Real-time continuous glucose monitoring

Active Comparator group

Description:

Subjects will be reviewed and a blood sample will be taken for the measurement of HbA1c. Training on the use of DEXCOM G5 or similar will be provided by the research team. Competency on the use of the system will be evaluated. Participants will be advised to use real-time CGM continuously for the next 8 weeks. At the end of the first intervention, a blood sample for the measurement of HbA1c will be taken. Validated questionnaires evaluating diabetes-related distress, management and user acceptance will be completed.

Treatment:

Device: Real-time continuous glucose monitoring

Self-monitoring of blood glucose

Placebo Comparator group

Description:

Subjects will be reviewed and a blood sample will be taken for the measurement of HbA1c. During the Control Period, masked CGM will be applied for one week, during Week 1, 4 and 8. At the end of this, a blood sample for the measurement of HbA1c will be taken. Validated questionnaires evaluating diabetes-related distress, management and user acceptance will be completed.

Treatment:

Device: Self-monitoring of blood glucose