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Study details
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Extended Bolus for Meals in a Closed-loop System

University of California, San Francisco
NCT IDNCT05454891ClinicalTrials.gov data as of Apr 2026
Phase

Phase 4

Target enrollment

30

Study length

about 3.2 years

Ages

13–19

Locations

1 site in CA

What this study is about

This trial is testing whether giving more insulin at once (extended bolus) before meals, using a closed-loop system, can help control blood sugar levels better than standard insulin dosing. The goal is to see if the extended bolus helps prevent high or low blood sugar after eating.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Receive Extended bolus of insulin then standard bolus of insulin
  • 2.Receive Standard bolus of insulin then extended bolus of insulin

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Injection / IVInjection / IV

How treatment is administered

Treatment Assignment
Randomized (Open Label)

You are randomly assigned, but you will know your treatment.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Drug routes

injection

Endpoints

Primary: Glucose Area Under Curve [AUC]

Body systems

Endocrinology