Stanford School of Medicine
Endocrinology and Diabetes In the Department of Pediatrics

Clinical Study Details

Title

A Randomized Clinical Trial to Assess the Efficacy of Real-Time Continuous Glucose Monitoring in the Management of Type 1 Diabetes

THIS STUDY IS FULL AND WE ARE NOT ENROLLING

Description

This research study is expected to take approximately 1 year. The goal of this study is to find out if the use of a continuous glucose monitor that gives blood sugar readings in real time can improve blood sugar control and help prevent low blood sugar events. In addition, we are evaluating the cost-effectiveness of real-time continuous glucose monitoring. Half of the individuals in the study will start using a real-time continuous glucose monitor (RT-CGM) at the beginning of the study. The other half will continue to use just a home glucose meter for monitoring during the first six months and then be given a real-time continuous glucose monitor at the end of the first six months.

Eligibility

1. Be at least 8 years old
2. Have type 1 diabetes
3. Have used insulin at least one year
4. Use an insulin pump or multiple daily injections of insulin (at least 3 shots per day)
Your insulin regimen must have been stable for at least the last two months and you must have no plans to switch how you take your insulin during the next 6 months (e.g., if you are using multiple daily injections, you will be asked to not switch to an insulin pump during the next 6 months)
5. Have a HbA1C level of 10.0% or lower. This will be measured at the time of enrollment.
6. Speak and read English (for minors both the subject and parent or guardian must meet this criteria)
7. Not have plans to move out of this area in the next 12 months
8. Have not been part of another research study evaluating a treatment in the last six weeks
9. Have not used real-time continuous glucose monitor at home in the last 6 months
10. Be willing to use only the home glucose meter provided by the study for blood sugar testing
11. If you are female, not be pregnant or intending to become pregnant during the next year
12. Not have a medical problem or current use of medications that your doctor feels will be a problem
13. No inpatient psychiatric treatment within the past 6 months (for minors this refers to the subject and the parent or guardian)
14. No other members of the participants household is participating in the study
15. Be willing to follow the procedures that will be described in the next section

Procedures

Enrollment visit:
- answer questionnaires
- a HbA1c will be drawn by fingerstick
- become oridented to the RT-CGM systems and together you will choose the system that seems best for you. You will be taught to use the real-time continuous glucose monitor. The first sensor will be inserted by you with guidance from the study team. During the first week, the real-time continuous glucose monitor system will be blinded, meaning you will not be able to see the results from the real-time continuous glucose monitor.

Baseline visit: scheduled approximately 7-13 days after the first visit.
- Clinic staff will download the real-time continuous glucose monitor and the home glucose meter.
- HbA1c measurements will be collected by fingerstick.
- A computer program will assign you by chance to either get the real-time continuous glucose monitor now or in six months.

Home procedures: If you are in the group using the real-time continuous glucose monitor during the first six months, you should use the real-time continuous glucose monitor daily. If you are in the group that is not given the real-time continuous glucose monitor at the beginning of the study, you should not use the real-time continuous glucose monitor during the first six months. You will be asked to use a real-time continuous glucose monitor that will be blinded so that the subject will not be able to review the real time data. This will occur the week following the 13 and 26 week visit. We will give you a real-time continuous glucose monitor to use after the first six months.

For the first six months subjects in both groups will be expected to do the following:
1. Check blood sugar with the home glucose meter that the study will provide
2. Download the devices for the study. Control group will also:
3. Use a real-time continuous glucose monitor that will be blinded so that the subject will not be able to view the real time data. This will occur the week following the 13 and 26 week visit.

After six months, if you used the real-time continuous glucose monitor in the first six months, you will continue using it for the next six months. If you did not use the real-time continuous glucose monitor, you will be given a real-time continuous glucose monitor and new instructions for making diabetes management decisions based on the real-time continuous glucose monitor and home glucose meter results.

Study visits and phone calls:
First six months: You will have a visit at 1,4,8,13, 19, and 26 weeks after your Baseline Visit. At these visits the following will occur:
- Devices for the study will be downloaded and the data reviewed with you. If you use an insulin pump that can be downloaded, this will be done.
- Blood will be drawn to measure your HbA1C.
- You will complete questionnaires.

Phone calls will occur 2, 6, 10, 16, and 22 weeks after your Baseline Visit.
- If the subject is able to download their study devices at home that data will be reviewed.
- Questions regarding the subjects diabetes management will be asked.

Second six months:
During the second six months of the study if you were in the group without the real time-continuous glucose monitor in the first part of the study you will be seen 1, 2, 4, 13, and 26 weeks after the 26 week visit of the first six months of the study. If you were in the group that used the real-time-continuous glucose monitor in the first six months of the study, you will be seen 13 and 26 weeks after the 26 week visit of the first six months of the study.
- Devices for the study will be downloaded and the data reviewed with you.  If you use an insulin pump that can be downloaded, this will also be done.
- Blood will be drawn to measure your HbA1c.
- You will complete questionnaires.

Phone calls will only occur for the subjects that were without the real time-continuous glucose monitor in the first part of the study at 3 days, and 2 weeks after their week 1 visit of the second six months. The group that used the real time-continuous glucose monitor will not have any scheduled phone contacts in the second six months of the study.
- If the subject is able to download their study devices at home that data will be reviewed.
- Questions regarding the subjects diabetes management will be asked.

Contact

Contact:  If you are interested in having either you or your child participate in this study, please review the consent form.  Once you have reviewed these forms, please contact us to discuss your eligibility and any questions you may have.

Jen Block, RN, CDE                       Phone: (650) 736-8142                   Email: jblock@stanford.edu
Kari Santibanes-Benassi, FNP    Phone: (650) 736-7948                     Email: karis@stanford.edu

Please review the consent and assent forms for more information.

 

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