NCT04225507

Brief Summary

Despite the efficacy of intensive lifestyle interventions in prediabetes, the incidence of diabetes is rising, and thus there is a critical need for additional strategies to prevent diabetes and to reduce its cardiovascular complications in this high-risk population. Sleep apnea is a highly common condition in prediabetes, but it has been mostly ignored and undertreated in current practice. The proposed study will be the first to assess whether adding CPAP (continuous positive air pressure) treatment to a lifestyle intervention improves cardiometabolic outcomes beyond that achieved with lifestyle alone (i.e. current standard of care) in high-risk individuals with prediabetes.

Trial Health

75
On Track

Trial Health Score

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

Enrollment
174

participants targeted

Target at P75+ for not_applicable

Timeline
2mo left

Started Apr 2021

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress97%
Apr 2021Jul 2026

First Submitted

Initial submission to the registry

January 7, 2020

Completed
6 days until next milestone

First Posted

Study publicly available on registry

January 13, 2020

Completed
1.2 years until next milestone

Study Start

First participant enrolled

April 13, 2021

Completed
5.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Last Updated

December 8, 2025

Status Verified

July 1, 2025

Enrollment Period

5.2 years

First QC Date

January 7, 2020

Last Update Submit

December 5, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change from baseline 2-hour glucose levels at 6 months

    Glucose levels will be measured at time=120min during oral glucose tolerance test

    Baseline and at 6 months

Secondary Outcomes (1)

  • Change from baseline morning blood pressure at 6 months

    Baseline and 6 months

Study Arms (2)

Lifestyle Intervention

OTHER

Diet and exercise.

Behavioral: Diet and exercise coaching

Lifestyle Plus CPAP Intervention

EXPERIMENTAL

CPAP treatment, diet and exercise.

Behavioral: Diet and exercise coachingOther: CPAP Treatment

Interventions

All participants will receive diet and exercise goals and coaching.

Lifestyle InterventionLifestyle Plus CPAP Intervention

CPAP treatment for sleep apnea and CPAP education and adherence coaching.

Lifestyle Plus CPAP Intervention

Eligibility Criteria

Age20 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Overweight or obese
  • Prediabetes
  • Sleep apnea

You may not qualify if:

  • Diabetic
  • enrolled in a formal weight loss program
  • Any underlying disease likely to limit life span and/or increase risk of interventions

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Chicago

Chicago, Illinois, 60637, United States

Location

MeSH Terms

Conditions

Sleep Apnea SyndromesPrediabetic StateOverweightObesity

Interventions

DietContinuous Positive Airway Pressure

Condition Hierarchy (Ancestors)

ApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesDiabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesOvernutritionNutrition DisordersBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Nutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological PhenomenaPositive-Pressure RespirationRespiration, ArtificialAirway ManagementTherapeuticsRespiratory Therapy

Study Officials

  • Esra Tasali, MD

    University of Chicago

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 7, 2020

First Posted

January 13, 2020

Study Start

April 13, 2021

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

July 1, 2026

Last Updated

December 8, 2025

Record last verified: 2025-07

Locations