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RecruitingNCT05908708Updated Apr 9, 2026

Closed-loop Medtronic 780G System in Youth With Type 1 Diabetes

An observational study in Type 1 Diabetes and Child, Only, sponsored by Sheba Medical Center. Recruiting at 1 site in Israel. Open to participants aged 1 Year to 21 Years. Per ClinicalTrials.gov, last updated 2026-04-09.

Sponsored by Sheba Medical Center · Observational

From the registry’s dates

  • Primary completion was expected by Jul 2026, 3 months ago, but the record still lists the study as recruiting.
  • Started Jun 2023; still recruiting 3 years 4 months later.
Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
120
Ages
1 Year to 21 Years
Sex
All
01

Study summary

The goal of this observational study is to describe data on Israeli children and youth using the 780G system including data regarding glycemic control parameters, various questionnaires, sleep data, bioimpedance measures, and dietary parameters. The main questions it aims to answer are: • whether the 780G system will improve glycemic control • whether the psychosocial aspects will improve. Participants will be followed once connected to 780G, at baseline, one, three, six months, 1 year, and two years after the connection.

Read the detailed description

Patients and Methods:

The study population will include individuals with type 1 diabetes ages 7-18 years who are managed by the pediatric diabetes teams from the AWeSoMe Study Group (five pediatric diabetes multidisciplinary clinics in Israel; Dana-Dwek Children's Hospital, Edmond and Lily Safra Children's Hospital, Maccabi National Juvenile Diabetes Center, Shamir Medical Center and Wolfson Medical Center) and who chose to purchase 780G out-of-pocket as part of their diabetes care, or are eligible according to the updated Israeli basket to receive it. The decision to use 780G will be made prior to and independent of their entrance to the study, and will be based on preferences of the patients and their parents.

Study design:

A prospective multi-center study (AWeSoMe Study Group) of type 1 diabetes patients using the closed-loop Medtronic 780G system as compared to their previous treatment regimen.

Data will be collected at 6 timepoints: baseline (at initiation of 780G system), after 1 month, three months and 6 months, 1 year, and 2 years of the closed-loop Medtronic 780G system usage.

Data collection:

All the data collected are available for healthcare providers (doctors, nurses and dieticians) as part of the routine diabetes clinic visit. The information retrieved from the medical files will include sociodemographic characteristics (current age, sex, socioeconomic position by home address, parent's education level, marital status of parents), anthropometric parameters (height, weight and body mass index), pubertal status, physical activity levels and diabetes-related characteristics. Diabetes-related characteristics: age at diagnosis, autoimmune co-morbidities (thyroid disease and Celiac), glycated hemoglobin (HbA1c) and acute complications (severe hypoglycemic episodes and DKA). Insulin pump and CGM downloaded data retrieved during the 2 weeks prior to the clinic visit: mode of insulin therapy (previous and current), total daily insulin dose (Units/kg/day), total daily carbohydrates (grams/day) and CGM metrics. CGM metrics will include: percent time CGM active, mean glucose level, standard deviation (SD), coefficient of variability (CV), time in range (TIR), time above range (TAR), time below range (TBR) and glucose management indicator (GMI). Closed-loop Medtronic 780G system user evaluation: reason for switching from conventional treatment to closed-loop, automode system exits and patient's/parent's perception of closed-loop system.

In addition to the data mentioned above the following data will be collected:

  1. Questionnaires for the:

    1. Patients - the quality of life, anxiety, fear of hypoglycemia - child, diabetes management, and nutrition knowledge in diabetes. All of the questionnaires are validated and were translated into Hebrew using the globally-accepted linguistic validation procedure.
    2. Parents - the quality of life, fear of hypoglycemia - parent, diabetes management, sleep quality, and nutrition knowledge in diabetes. All of the questionnaires are validated and were translated into Hebrew using the globally-accepted linguistic validation procedure.
  2. Bioimpedance parameters
  3. Diet - nutrition evaluation through 3-daily diet notes
  4. Sleep - sleep evaluation through parents' 3-daily sleep diaries
02

Conditions studied

  • Type 1 Diabetes
  • Child, Only

Keywords

  • Technology
  • Insulin pump
03

In context

Diabetes Mellitus, Type 1

3,522 studies on the registry are indexed under Diabetes Mellitus, Type 1; 577 are open to participants now.

This study's planned enrollment of 120 is close to the median of 120 across 748 observational studies indexed under Diabetes Mellitus, Type 1.

Browse Diabetes Mellitus, Type 1 studies →

Lead sponsor

Sheba Medical Center is the lead sponsor of 660 studies on the registry; 63 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year to 21 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study population will include individuals with type 1 diabetes ages 1-21 years who are managed by the pediatric diabetes teams from the AWeSoMe Study Group (five pediatric diabetes multidisciplinary clinics in Israel; Dana-Dwek Children's Hospital, Edmond and Lily Safra Children's Hospital, Maccabi National Juvenile Diabetes Center, Shamir Medical Center and Wolfson Medical Center) and who chose to purchase 780G out-of-pocket as part of their diabetes care, or are eligible according to the updated Israeli basket to receive it. The decision to use 780G will be made prior to and independent of their entrance to the study, and will be based on preferences of the patients and their parents.

Inclusion criteria

Diagnosis of type 1 diabetes Diabetes duration ≥ 6 months Routine attendance at clinic visits Initiation of 780G system usage

Exclusion criteria

Exclusion Criteria:

Children under the age of 1 year Children without 780G system

05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
120 participants (estimated)
Patient registry
No

Interventions

  • DeviceMedtronic 780G® hybrid closed loop

    Medtronic 780G® hybrid closed loop system uses the commercial "auto-mode" with an insulin pump and continuous glucose monitoring.

06

What researchers measure

Primary outcomes

  1. Time spent in range (70-180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent in range (70-180 mg/dL) from baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0,3 months

  2. Time spent in range (70-180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent in range (70-180 mg/dL) from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0,6 months

  3. Time spent in range (70-180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent in range (70-180 mg/dL) from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0,12 months

  4. Time spent in range (70-180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent in range (70-180 mg/dL) from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0,24 months

Secondary outcomes

  1. HbA1c as assessed from point-of-care clinic visit

    Change in HbA1c from baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0, 3 months

  2. HbA1c as assessed from point-of-care clinic visit

    Change in HbA1c from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 6 months

  3. Time spent below range (≤ 70 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 70 mg/dL) baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0, 3 months

  4. Time spent below range (≤ 70 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 70 mg/dL and ≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 6 months

  5. Time spent below range (≤ 54 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 54 mg/dL) baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0, 3 months

  6. Time spent below range (≤ 54 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 6 months

  7. Time spent above range (> 180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent above range (\> 180 mg/dL) baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0, 3 months

  8. Time spent above range (> 180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent above range (\> 180 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 6 months

  9. Time spent above range (> 250 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent above range (\> 250 mg/dL) baseline to three months of closed-loop Medtronic 780G system

    Time frame: 0, 3 months

  10. Time spent above range (> 250 mg/dL) as assessed from closed-loop Medtronic 780G system

    Delta time spent above range (\> 250 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 6 months

  11. Quality of life - child as assessed by a questionnaire

    Change in quality of life - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 5, max score 100; the higher the score, the better quality of life.

    Time frame: 0, 6 months

  12. Quality of life - parent as assessed by a questionnaire

    Change in quality of life - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 37, max score 185; the higher the score, the better quality of life.

    Time frame: 0, 6 months

  13. Trait anxiety - child as assessed by a questionnaire

    Change in trait anxiety - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 80; the higher the score, the higher the anxiety.

    Time frame: 0, 6 months

  14. Fear of hypoglycemia - child as assessed by a questionnaire

    Change in fear of hypoglycemia - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 25, max score 100; the higher the score, the higher the fear of hypoglycemia.

    Time frame: 0, 6 months

  15. Fear of hypoglycemia - parent as assessed by a questionnaire

    Change in fear of hypoglycemia - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 25, max score 100; the higher the score, the higher the fear of hypoglycemia.

    Time frame: 0, 6 months

  16. Diabetes management - child as assessed by a questionnaire

    Change in diabetes management - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 100; the higher the score, the better the management of diabetes.

    Time frame: 0, 6 months

  17. Diabetes management - parent as assessed by a questionnaire

    Change in diabetes management - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 100; the higher the score, the better the management of diabetes.

    Time frame: 0, 6 months

  18. Nutrition diaries as assessed by a dietician

    Change in carbohydrates grams - baseline to 6 months. Assessment of carbohydrates in grams by a certified pediatric nutritionist.

    Time frame: 0, 6 months

  19. Sleep quality as assessed by a questionnaire

    Change in sleep quality - baseline to 6 months, as assessed by a validated questionnaire, as cited in the Reference section.

    Time frame: 0, 6 months

  20. HbA1c as assessed from point-of-care clinic visit

    Change in HbA1c from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 12 months

  21. HbA1c as assessed from point-of-care clinic visit

    Change in HbA1c from baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 24 months

  22. Time spent below range (≤ 70 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 70 mg/dL and ≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 12 months

  23. Time spent below range (≤ 70 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 70 mg/dL and ≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 24 months

  24. Time spent below range (≤ 54 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 12 months

  25. Time spent below range (≤ 54 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent below range (≤ 54 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 24 months

  26. Time spent above range (> 180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent above range (\> 180 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 12 months

  27. Time spent above range (> 180 mg/dL) as assessed from closed-loop Medtronic 780G system

    Change in time spent above range (\> 180 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 24 months

  28. Time spent above range (> 250 mg/dL) as assessed from closed-loop Medtronic 780G system

    Delta time spent above range (\> 250 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 12 months

  29. Time spent above range (> 250 mg/dL) as assessed from closed-loop Medtronic 780G system

    Delta time spent above range (\> 250 mg/dL) baseline to six months of closed-loop Medtronic 780G system

    Time frame: 0, 24 months

  30. Quality of life - parent as assessed by a questionnaire

    Change in quality of life - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 37, max score 185; the higher the score, the better quality of life.

    Time frame: 0, 24 months

  31. Trait anxiety - child as assessed by a questionnaire

    Change in trait anxiety - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 80; the higher the score, the higher the anxiety.

    Time frame: 0, 24 months

  32. Fear of hypoglycemia - child as assessed by a questionnaire

    Change in fear of hypoglycemia - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 25, max score 100; the higher the score, the higher the fear of hypoglycemia.

    Time frame: 0, 24 months

  33. Fear of hypoglycemia - parent as assessed by a questionnaire

    Change in fear of hypoglycemia - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 25, max score 100; the higher the score, the higher the fear of hypoglycemia.

    Time frame: 0, 24 months

  34. Diabetes management - child as assessed by a questionnaire

    Change in diabetes management - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 100; the higher the score, the better the management of diabetes.

    Time frame: 0, 24 months

  35. Diabetes management - parent as assessed by a questionnaire

    Change in diabetes management - baseline to 6 months. A validated questionnaire, as cited in the Reference section. Min score 20, max score 100; the higher the score, the better the management of diabetes.

    Time frame: 0, 24 months

  36. Nutrition diaries as assessed by a dietician

    Change in carbohydrates grams - baseline to 6 months. Assessment of carbohydrates in grams by a certified pediatric nutritionist.

    Time frame: 0, 24 months

  37. Sleep quality as assessed by a questionnaire

    Change in sleep quality - baseline to 6 months, as assessed by a validated questionnaire, as cited in the Reference section.

    Time frame: 0, 24 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Mehta SN, Nansel TR, Volkening LK, Butler DA, Haynie DL, Laffel LM. Validation of a contemporary adherence measure for children with Type 1 diabetes: the Diabetes Management Questionnaire. Diabet Med. 2015 Sep;32(9):1232-8. doi: 10.1111/dme.12682. Epub 2015 Jan 30. PubMed 26280463 ↗
  • Skinner TC, Hoey H, McGee HM, Skovlund SE; Hvidore Study Group on Childhood Diabetes. A short form of the Diabetes Quality of Life for Youth questionnaire: exploratory and confirmatory analysis in a sample of 2,077 young people with type 1 diabetes mellitus. Diabetologia. 2006 Apr;49(4):621-8. doi: 10.1007/s00125-005-0124-0. Epub 2006 Jan 26. PubMed 16525844 ↗
  • Gaudry E, Vagg P, Spielberger CD. Validation of the State-Trait Distinction in Anxiety Research. Multivariate Behav Res. 1975 Jul 1;10(3):331-41. doi: 10.1207/s15327906mbr1003_6. PubMed 26829634 ↗
  • Gonder-Frederick L, Nyer M, Shepard JA, Vajda K, Clarke W. Assessing fear of hypoglycemia in children with Type 1 diabetes and their parents. Diabetes Manag (Lond). 2011;1(6):627-639. doi: 10.2217/DMT.11.60. PubMed 22180760 ↗
  • Rovner AJ, Nansel TR, Mehta SN, Higgins LA, Haynie DL, Laffel LM. Development and validation of the type 1 diabetes nutrition knowledge survey. Diabetes Care. 2012 Aug;35(8):1643-7. doi: 10.2337/dc11-2371. Epub 2012 Jun 4. PubMed 22665217 ↗
  • Buysse DJ, Reynolds CF 3rd, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res. 1989 May;28(2):193-213. doi: 10.1016/0165-1781(89)90047-4. PubMed 2748771 ↗
  • Gruber N, Wittenberg A, Brener A, Abiri S, Mazor-Aronovitch K, Yackobovitch-Gavan M, Averbuch S, Ben Ari T, Levek N, Levran N, Landau Z, Rachmiel M, Pinhas-Hamiel O, Lebenthal Y. Real-Life Achievements of MiniMed 780G Advanced Closed-Loop System in Youth with Type 1 Diabetes: AWeSoMe Study Group Multicenter Prospective Trial. Diabetes Technol Ther. 2024 Nov;26(11):869-880. doi: 10.1089/dia.2024.0148. Epub 2024 May 31. PubMed 38758194 ↗

Individual participant data

Plan to share: Undecided — If requested, we will share the data collection system as needed.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 9, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05908708
Lead sponsor
Sheba Medical Center
Collaborators
Tel-Aviv Sourasky Medical Center, Maccabi Healthcare Services, Israel, Wolfson Medical Center, Assaf-Harofeh Medical Center
Responsible party
Dr. Noah Gruber (Pediatric endocrinologist, Sheba Medical Center) — Principal investigator
First posted
Jun 18, 2023
Start date
Jun 1, 2023
Primary completion
Jul 1, 2026 (estimated)
Completion
Jul 1, 2026 (estimated)
Last update
Apr 9, 2026

Study contacts

Noah Gruber, MD
Contact
noah.gruber@sheba.health.gov.il
+972507181666
Elinor Mauda, BSc
Contact
Elinor.Mauda@sheba.health.gov.il
+972543550783

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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