- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03970889
Real-time Reminders To Decrease Late or Missed Meal Boluses (Klue)
August 31, 2021 updated by: Bruce Buckingham, Stanford University
Pilot Study to Test Efficacy of Real-time Reminders on Apple Watch To Decrease Late or Missed Meal Boluses
This study is examining whether the Klue app is effective in detecting missed or late meal boluses in patients with Type 1 diabetes.
The app is programmed onto an Apple Watch and will detect potential missed boluses from hand motion.
It will send text alerts to the user asking if they have bolused.
This is a pilot study and will assess whether there is a change in the number of missed meal boluses in the two weeks prior to each visit.
If the findings are significant, this software can be integrated in future closed-loop algorithms for automatic insulin delivery.
Study Overview
Detailed Description
This will be a randomized, cross-over, unblinded study with subjects randomized upon entry into the study to either begin using the Klue software for 6 weeks or to continue with their usual care for 6 weeks.
Subjects are eligible for enrollment if they are using a continuous glucose monitor (CGM) and insulin pumps or an insulin pen with memory and CGM, are missing or late in giving at least 4 food boluses in the previous two weeks, and they have an iPhone.
Missing or late meal boluses will be assessed through their pump/pen and sensor downloads.
This is a pilot study.
The investigators do not have preliminary data to do a true power calculation.
The primary outcome will be the change in the number of missed meal boluses in the two weeks prior to each visit.
Secondary outcome measures will be the number of missed meal boluses in each month of the study, change in HbA1c levels (measured every 6 weeks), accuracy of the Klue software in detecting meals (true positive and false positive rates), and a user satisfaction survey.
Study Type
Interventional
Enrollment (Actual)
24
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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California
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Palo Alto, California, United States, 94305
- Stanford
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
13 years and older (Child, Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Age 13 and over
- On an insulin pump for at least 3 months and using CGM or using an insulin pen with memory and a CGM
- Willing to wear a CGM at least 70% of the time while in the study
- Using an iPhone
- Willing to wear an Apple watch on their dominant hand while awake
- Missing or late in giving at least four food boluses in the previous two weeks
- Understanding and willingness to follow the protocol and sign informed consent
- Ability to speak, read and write in the language of the investigators
Exclusion Criteria:
- Pregnant or lactating
- A known medical condition that in the judgment of the investigator might interfere with the completion of the protocol
- Current treatment for a seizure disorder
- Inpatient psychiatric treatment in the past 6 months
Note: Adequately treated thyroid disease and celiac disease do not exclude subjects from enrollment. They may be participating in another trial, if this study is approved by the investigators of the other trial.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: Standard Care
Participants will be in their usual care, wearing a continuous glucose sensor and taking insulin by pump or by pens with memory
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Experimental: Klue
Subjects will wear an Apple watch on their dominant hand and receive alerts when eating behavior is detected by the Klue software.
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Klue is a software program the uses an Apple watch to detect hand motions which are indicative of eating.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in the number of missed meal boluses
Time Frame: The two weeks prior to each study visit
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A missed meal bolus is defined by no insulin dose within 2 hours from the start of the CGM rise.
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The two weeks prior to each study visit
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in time in range
Time Frame: data for 1 month prior to each study visit at baseline, 6 weeks and 12 weeks of this 12 week study for each subject
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sensor glucose values between 70-180 mg/dl
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data for 1 month prior to each study visit at baseline, 6 weeks and 12 weeks of this 12 week study for each subject
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Positive predictive value of a Klue meal alert
Time Frame: All data for the 6 weeks on the Klue intervention arm when Klue is active
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Percent of time a meal alert signaled a meal
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All data for the 6 weeks on the Klue intervention arm when Klue is active
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Burdick J, Chase HP, Slover RH, Knievel K, Scrimgeour L, Maniatis AK, Klingensmith GJ. Missed insulin meal boluses and elevated hemoglobin A1c levels in children receiving insulin pump therapy. Pediatrics. 2004 Mar;113(3 Pt 1):e221-4. doi: 10.1542/peds.113.3.e221.
- Olinder AL, Kernell A, Smide B. Missed bolus doses: devastating for metabolic control in CSII-treated adolescents with type 1 diabetes. Pediatr Diabetes. 2009 Apr;10(2):142-8. doi: 10.1111/j.1399-5448.2008.00462.x. Epub 2008 Oct 24.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
October 12, 2018
Primary Completion (Actual)
March 19, 2020
Study Completion (Actual)
March 30, 2020
Study Registration Dates
First Submitted
August 23, 2018
First Submitted That Met QC Criteria
May 30, 2019
First Posted (Actual)
June 3, 2019
Study Record Updates
Last Update Posted (Actual)
September 2, 2021
Last Update Submitted That Met QC Criteria
August 31, 2021
Last Verified
August 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 47137
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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