NCT07507708 · Sue Brown
Insulin Delivery With Self-Adjusting Closed-Loop and Behavioral Glycemic Control Enhanced by Prediction
(INSIGHT)
What this study is about
This study is a randomly assigned cross-over trial comparing AIDANET with Anticipation to AIDANET in FCL without Anticipation. Participants will complete 4 weeks of AID data collection which will be used to establish baseline and initialize the control algorithm.
View original scientific description
This study is a randomized cross-over trial comparing AIDANET with Anticipation to AIDANET in FCL without Anticipation. Participants will complete 4 weeks of AID data collection which will be used to establish baseline and initialize the control algorithm. Participants will then be randomized to one of two groups: Group A: AIDANET in FCL with Anticipation (AIDANET+ACL), and Group B: AIDANET in FCL without Anticipation (AIDANET+FCL). The study duration of each group is 4 weeks each. The order of these two phases will be dependent upon randomization.
Interventions
DEVICE
Automated Insulin Delivery (AID)
Usual Care
DEVICE
AIDANET + Fully Closed Loop (FCL)
All participants will use AIDANET in FCL mode with instructions to avoid announcing meal boluses whenever possible during the four weeks.
DEVICE
AIDANET + Anticipatory Closed Loop (ACL)
All insulin will be delivered automatically. The algorithm will review past behaviors to determine the amount of insulin that will be needed for a meal.
Primary outcome measures
Time in range 70-140 mg/dL as computed by the study CGM
Time frame: 8 weeks
Computed as the number of estimated glucose values ≥70mg/dL and \<140mg/dL divided by the number of valid values (defined as a number between 39 and 401)
Time in range 70-140 mg/dL as computed by the study CGM
Time frame: 8 weeks
Outcome is computed if: * \>4032 values are recorded (availability condition, 2 weeks equivalent) * AND there is \>70% values between the first recorded EGV of the analysis window and the last (density condition)
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age ≥18.0 years old at time of consent
- Clinical diagnosis, based on investigator assessment, of T1D for \> 1 year.
- Having used an FDA approved AID system within the last 6 months (can be intermittent use).
- Currently using insulin for \>6 months.
- Willingness to switch to use an FDA-approved personal insulin for the study pump (e.g., lispro or aspart, or biosimilar FDA-approved products) as directed by the study team.
- Has one or more supportive companions knowledgeable about emergency procedures for severe hypoglycemia and able to contact emergency services and study staff who either lives with participant or located within approximately 30 minutes of participant and able to locate participant in the event of an emergency.
- Participant not currently known to be pregnant or breastfeeding.
- If participant can become pregnant, they must agree to use a form of contraception to prevent pregnancy while a participant in the study. A negative serum or urine pregnancy test will be required for all participants of childbearing potential. Participants who become pregnant will be discontinued from the study. Also, participants who during the study develop and express the intention to become pregnant within the timespan of the study will be discontinued.
- Willingness to wear a Dexcom CGM during each of the study phases.
- Willingness to use the study AIDANET system (CGM, pump, and phone) during the relevant study periods.
- Willingness not to start any new non-insulin glucose-lowering agent during the trial.
- Willingness to participate in all study procedures including in person training.
- Access to internet at home and willingness to upload data during the study as needed.
- Investigator has confidence that the participant can successfully operate all study devices and can adhere to the protocol.
- Participant is proficient in reading and verbal communication in English. Participant
Exclusion criteria
- The participant must not have any exclusion criteria to be eligible to participate in the study.
- Plans to start a new non-insulin glucose-lowering agent (e.g., GLP-1 receptor agonists, Symlin, DPP-4 inhibitors,). Participants may be on a stable dose of such an agent for at least the past month.
- Current use of sulfonylurea medications.
- Uncontrolled microvascular complications such as active proliferative retinopathy not being treated or not responsive to current treatment.
- Current use of an SGLT-2 or SGLT-1/2 inhibitor due to risk of euglycemic DKA.
- Hemophilia or any other bleeding disorder.
- History of severe hypoglycemic events with seizure or loss of consciousness in the last 12 months.
- History of DKA event in the last 12 months.
- Currently on peritoneal or hemodialysis.
- Currently being treated for adrenal insufficiency.
- Currently being treated for a seizure disorder.
- Hypothyroidism or hyperthyroidism that is not adequately treated.
- Use of oral or injectable steroids at the time of enrollment.
- Known ongoing adhesive intolerance that is not well managed.
- A condition, which in the opinion of the investigator or designee, would put the participant or study at risk.
- Participation in another interventional trial at the time of enrollment.
- Participant with a direct supervisor at work/school who is involved in the conduct of the trial.
Where
- Charlottesville, Virginia
Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Tandem Diabetes Care, Inc., DexCom, Inc.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 22, 2026 · Source of record for eligibility and locations