NCT04796779

Brief Summary

The purpose of this study is to learn whether an investigational automated insulin delivery system ("study system") for young children (2 yo to less than 6 yo) with type 1 diabetes can safely improve blood glucose (sometimes called blood sugar) control.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
102

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Apr 2021

Geographic Reach
1 country

3 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 15, 2021

Completed
28 days until next milestone

First Posted

Study publicly available on registry

March 15, 2021

Completed
1 month until next milestone

Study Start

First participant enrolled

April 21, 2021

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 12, 2022

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 31, 2022

Completed
11 months until next milestone

Results Posted

Study results publicly available

June 28, 2023

Completed
Last Updated

June 28, 2023

Status Verified

June 1, 2023

Enrollment Period

12 months

First QC Date

February 15, 2021

Results QC Date

April 10, 2023

Last Update Submit

June 5, 2023

Conditions

Keywords

Control-IQ TechnologyInsulin PumpClosed Loop Control (CLC)Continuous Glucose Monitor (CGM)Multiple Daily Injections (MDI)

Outcome Measures

Primary Outcomes (1)

  • Time in Range

    Time in range is the amount of time spent in the target glucose range-between 70 and 180 mg/dL-as measured by CGM

    13 weeks

Secondary Outcomes (5)

  • CGM-measured Percent Above 250 mg/dL

    13 weeks

  • CGM-measured Mean Glucose

    13 weeks

  • HbA1c at 13 Weeks

    13 weeks

  • CGM-measured Percent Below 70 mg/dL

    13 weeks

  • CGM-measured Percent Below 54 mg/dL

    13 weeks

Other Outcomes (46)

  • Percent Above 180 mg/dL

    13 weeks

  • Percent in Range 70-140 mg/dL

    13 weeks

  • Glucose Variability Measured With the Coefficient of Variation (CV)

    13 weeks

  • +43 more other outcomes

Study Arms (2)

CLC Group

EXPERIMENTAL

Participants who skip or successfully complete the run-in will be randomly assigned 2:1 to the use of closed-loop control (CLC group) system using Tandem t:slim X2 with Control-IQ Technology vs Standard of Care (SC group) for 3 weeks. Participants randomized to the intervention group will use the Tandem t:slim X2 with Control-IQ Technology v1.0 during the first 13 weeks of the study (RCT phase, weeks 1-13) and then use Tandem t:slim X2 insulin pump with Control-IQ Technology v1.5 for the remaining 13 weeks of the study (extension phase, weeks 14-26).

Device: Tandem t:slim X2 with Control-IQ Technology ProDevice: Tandem t:slim X2 with Control-IQ Technology V1.5

SC Group

ACTIVE COMPARATOR

Participants who skip or successfully complete the run-in will be randomly assigned 2:1 to the use of closed-loop control (CLC group) system using Tandem t:slim X2 with Control-IQ Technology vs Standard of Care (SC group) for 3 weeks. Participants randomized to the SC group will use their existing insulin therapy in conjunction with study Dexcom G6 CGM during the first 13 weeks of the study (RCT phase, weeks 1-13). The SC group will then transition to using the Tandem t:slim X2 insulin pump with Control-IQ Technology v1.5 and study Dexcom G6 CGM for the remaining 13 weeks of the study (weeks 14-26).

Device: Standard Care (SC)Device: Tandem t:slim X2 with Control-IQ Technology V1.5

Interventions

The Tandem t:slim X2 with Control-IQ Technology Pro is an "artificial pancreas" (AP) application that uses advanced closed loop control algorithms to automatically manage blood glucose levels for people with Type 1 Diabetes. The system modulates insulin to keep blood glucose in a targeted range. The system components include the t:slim X2 with Control-IQ Technology and the Dexcom G6 CGM. The system is very similar to the commercially available t:sli X2 with Control-IQ but modified to accept the lower weight and Total Daily Insulin of the studied population.

CLC Group

Standard of Care consists in the participant existing insulin therapy (prior to enrollment) in conjunction with a study Dexcom G6 CGM. Existing insulin therapies are defined as multiple daily injections of insulin (MDI) or use of an insulin pump without hybrid closed-loop control capabilities (low-glucose suspend or predictive low-glucose suspend functionality is permitted).

SC Group

The Tandem t:slim X2 with Control-IQ Technology V1.5 is an "artificial pancreas" (AP) application that uses advanced closed loop control algorithms to automatically manage blood glucose levels for people with Type 1 Diabetes. The system modulates insulin to keep blood glucose in a targeted range. The system components include the t:slim X2 with Control-IQ Technology and the Dexcom G6 CGM. The system is derived from the commercially available t:slim X2 with Control-IQ, with additional features.

CLC GroupSC Group

Eligibility Criteria

Age24 Months - 71 Months
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • Clinical diagnosis, based on investigator assessment, of type 1 diabetes for at least 6 months and using insulin for at least 6 months
  • Familiarity and use of a carbohydrate ratio for meal boluses.
  • Age ≥2 and \<6 years old
  • Living with one or more parent/legal guardian knowledgeable about emergency procedures for severe hypoglycemia and able to contact emergency services and study staff.
  • Investigator has confidence that the parent can successfully operate all study devices and is capable of adhering to the protocol
  • Willingness to switch to lispro (Humalog) or aspart (Novolog) if not using already, and to use no other insulin besides lispro (Humalog) or aspart (Novolog) during the study for participants using a study-provided Tandem pump during the study.
  • Study will not be providing insulin; therefore, participants will need to have access to either lispro or aspart
  • Total daily insulin dose (TDD) at least 5 U/day
  • Body weight at least 20 lbs.
  • Willingness not to start any new non-insulin glucose-lowering agent during the course of the trial (see section 2.3)
  • Participant and parent(s)/guardian(s) willingness to participate in all training sessions as directed by study staff.
  • Parent/guardian proficient in reading and writing English.

You may not qualify if:

  • Concurrent use of any non-insulin glucose-lowering agent (including Glucagon-like peptide-1 \[GLP-1\] agonists, Symlin, Dipeptidyl peptidase-4 \[DPP-4\] inhibitors, Sodium-glucose Cotransporter-2 (SGLT-2) inhibitors, sulfonylureas).
  • Hemophilia or any other bleeding disorder
  • History of \>1 severe hypoglycemic event with seizure or loss of consciousness in the last 3 months
  • History of \>1 DKA event in the last 6 months not related to illness, infusion set failure, or initial diagnosis
  • History of chronic renal disease or currently on hemodialysis
  • History of adrenal insufficiency
  • Hypothyroidism that is not adequately treated
  • Use of oral or injectable steroids within the last 8 weeks
  • Known, ongoing adhesive intolerance
  • Plans to receive blood transfusions or erythropoietin injections during the course of the study
  • A condition, which in the opinion of the investigator or designee, would put the participant or study at risk (specified in the study procedure manual)
  • Currently using any closed-loop system, or using an insulin pump that is incompatible with use of the study CGM
  • Participation in another pharmaceutical or device trial at the time of enrollment or during the study
  • Employed by, or having immediate family members employed by Tandem Diabetes Care, Inc., or having a direct supervisor at place of employment who is also directly involved in conducting the clinical trial (as a study investigator, coordinator, etc.); or having a first-degree relative who is directly involved in conducting the clinical trial

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Stanford University

Stanford, California, 94304, United States

Location

Barbara Davis Center, University of Colorado

Aurora, Colorado, 80045, United States

Location

University of Virginia Center for Diabetes Technology

Charlottesville, Virginia, 22903, United States

Location

Related Publications (2)

  • Wadwa RP, Reed ZW, Buckingham BA, DeBoer MD, Ekhlaspour L, Forlenza GP, Schoelwer M, Lum J, Kollman C, Beck RW, Breton MD; PEDAP Trial Study Group. Trial of Hybrid Closed-Loop Control in Young Children with Type 1 Diabetes. N Engl J Med. 2023 Mar 16;388(11):991-1001. doi: 10.1056/NEJMoa2210834.

    PMID: 36920756BACKGROUND
  • Beck RW, Kanapka LG, Breton MD, Brown SA, Wadwa RP, Buckingham BA, Kollman C, Kovatchev B. A Meta-Analysis of Randomized Trial Outcomes for the t:slim X2 Insulin Pump with Control-IQ Technology in Youth and Adults from Age 2 to 72. Diabetes Technol Ther. 2023 May;25(5):329-342. doi: 10.1089/dia.2022.0558. Epub 2023 Apr 12.

Related Links

MeSH Terms

Conditions

Diabetes Mellitus, Type 1

Condition Hierarchy (Ancestors)

Diabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesAutoimmune DiseasesImmune System Diseases

Results Point of Contact

Title
Marc Breton, PhD
Organization
University of Virginia

Study Officials

  • John Lum, MS

    Jaeb Center for Health Research

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

February 15, 2021

First Posted

March 15, 2021

Study Start

April 21, 2021

Primary Completion

April 12, 2022

Study Completion

July 31, 2022

Last Updated

June 28, 2023

Results First Posted

June 28, 2023

Record last verified: 2023-06

Data Sharing

IPD Sharing
Will share

Will follow the NIH Data Sharing Policy and Implementation Guidance on sharing research resources for research purposes to qualified individuals within the scientific community.

Shared Documents
STUDY PROTOCOL, SAP, ICF
Time Frame
Generally, data will be made available after the primary publications of each study.

Locations