CGM Intervention in Teens and Young Adults With Type 1 Diabetes (T1D)
Public ClinicalTrials.gov record NCT03263494. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
CGM Intervention in Teens and Young Adults With T1D (CITY): A Randomized Clinical Trial to Assess the Efficacy and Safety of Continuous Glucose Monitoring in Young Adults 14-<25 With Type 1 Diabetes
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Adolescents and young adults with T1D and poor glycemic control (age 14-\< 25 years, T1D duration \>12 months, HbA1c 7.5-\<11.0%, using an insulin pump or MDI)) will be randomly assigned to either CGM or BGM. Sample size will be 150. The primary outcome assessment will be HbA1c after 6 months. Secondary outcomes will include HbA1c, CGM metrics (control group will wear blinded CGM at 13 and 24 weeks), and quality of life measures. The randomized trial will be followed by a 6-month extension study during which the RCT control group will initiate CGM and the RCT CGM group will continue CGM.
Study identification
- NCT ID
- NCT03263494
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 153 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 14 Years to 24 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jan 25, 2018 (Actual)
- Primary completion
- May 8, 2019 (Actual)
- Completion
- Nov 7, 2019 (Actual)
- Last update posted
- Jul 9, 2026
2018 – 2019
United States locations
- U.S. sites
- 14
- U.S. states
- 12
- U.S. cities
- 14
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Children's Hospital Los Angeles | Los Angeles | California | 90027 | — |
| Stanford University | Palo Alto | California | 94304 | — |
| Barbara Davis Center--University of Colorado | Aurora | Colorado | 80045 | — |
| Yale University | New Haven | Connecticut | 06511 | — |
| Rocky Mountain Diabetes & Osteoporosis Center | Idaho Falls | Idaho | 83404 | — |
| Joslin Diabetes Center | Boston | Massachusetts | 02215 | — |
| IDC at Park Nicollet | Saint Louis Park | Minnesota | 55416 | — |
| Children's Mercy Hospital | Kansas City | Missouri | 64111 | — |
| Naomi Berrie Diabetes Center at Columbia University | New York | New York | 10032 | — |
| SUNY Upstate Medical University | Syracuse | New York | 13210 | — |
| University of North Carolina | Chapel Hill | North Carolina | 27713 | — |
| Children's Hospital of Philadelphia | Philadelphia | Pennsylvania | 19104 | — |
| Vanderbilt University | Nashville | Tennessee | 37212 | — |
| Baylor College of Medicine | Houston | Texas | 77030 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03263494, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 9, 2026 · Synced Oct 19, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT03263494 live on ClinicalTrials.gov.