The Pediatric Artificial Pancreas (PEDAP) Trial of Control-IQ Technology in Young Children in Type 1 Diabetes

Marc Breton

Status: Completed

Conditions: Type 1 Diabetes

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

Study type: Interventional

Funder types: Other; Industry; NIH

Identifiers

NCT04796779

RFA-DK-19-036 (Other Grant/Funding Number)

1U01DK127551-01 (U.S. NIH Grant/Contract)

200433

Details and patient eligibility

About

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.

Full description

Participants will be randomized to closed loop control (CLC) system (t:slim X2 with Control-IQ Technology) or to standard of care where the children will continue to use his or her personal insulin pump or multiple daily injections. Both groups will use a continuous glucose monitor (CGM) throughout the study. The study system will also use a study insulin pump and a software algorithm to automatically give insulin and control blood glucose. This system is also sometimes called a "closed-loop" system.

This study will take about 6-7 months for the child to complete. Study visits can be completed from home via videoconference (e.g. Zoom) without visiting the clinic or in-person at the clinic.

A subset of participants will be asked to join an ancillary study with Meal Bolus and Exercise challenges during the extension phase. Data collected from the start of each of these challenges until the following morning will be excluded from the analysis of the extension phase.

Enrollment: 102 patients

Sex: All

Ages: 24 to 71 months old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Clinical diagnosis, based on investigator assessment, of type 1 diabetes for at least 6 months and using insulin for at least 6 months

2. Familiarity and use of a carbohydrate ratio for meal boluses.

3. Age ≥2 and <6 years old

4. Living with one or more parent/legal guardian knowledgeable about emergency procedures for severe hypoglycemia and able to contact emergency services and study staff.

5. Investigator has confidence that the parent can successfully operate all study devices and is capable of adhering to the protocol

6. 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

7. Total daily insulin dose (TDD) at least 5 U/day

8. Body weight at least 20 lbs.

9. Willingness not to start any new non-insulin glucose-lowering agent during the course of the trial (see section 2.3)

10. Participant and parent(s)/guardian(s) willingness to participate in all training sessions as directed by study staff.

11. Parent/guardian proficient in reading and writing English.

Exclusion criteria

1. 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).
2. Hemophilia or any other bleeding disorder
3. History of >1 severe hypoglycemic event with seizure or loss of consciousness in the last 3 months
4. History of >1 DKA event in the last 6 months not related to illness, infusion set failure, or initial diagnosis
5. History of chronic renal disease or currently on hemodialysis
6. History of adrenal insufficiency
7. Hypothyroidism that is not adequately treated
8. Use of oral or injectable steroids within the last 8 weeks
9. Known, ongoing adhesive intolerance
10. Plans to receive blood transfusions or erythropoietin injections during the course of the study
11. 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)
12. Currently using any closed-loop system, or using an insulin pump that is incompatible with use of the study CGM
13. Participation in another pharmaceutical or device trial at the time of enrollment or during the study
14. 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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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102 participants in 2 patient groups

CLC Group

Experimental group

Description:

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).

Treatment:

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

Device: Tandem t:slim X2 with Control-IQ Technology Pro

SC Group

Active Comparator group

Description:

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).

Treatment:

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

Device: Standard Care (SC)