NCT06273072

Brief Summary

This is a randomized clinical trial of metformin among overweight or obese adults with not well-controlled asthma despite maintenance inhaler therapy.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
100

participants targeted

Target at P50-P75 for phase_2 asthma

Timeline
32mo left

Started Dec 2024

Longer than P75 for phase_2 asthma

Geographic Reach
1 country

2 active sites

Status
recruiting

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress35%
Dec 2024Dec 2028

First Submitted

Initial submission to the registry

February 15, 2024

Completed
7 days until next milestone

First Posted

Study publicly available on registry

February 22, 2024

Completed
10 months until next milestone

Study Start

First participant enrolled

December 9, 2024

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2026

Expected
2.3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2028

Last Updated

January 16, 2026

Status Verified

January 1, 2026

Enrollment Period

1.8 years

First QC Date

February 15, 2024

Last Update Submit

January 15, 2026

Conditions

Outcome Measures

Primary Outcomes (3)

  • Number of completed telemedicine visits

    Number of participants completing at least 3 out of the 4 monitoring telemedicine visits

    Baseline to week 24

  • Adherence to study drug

    Adherence will be measured by pill count

    Baseline to week 24

  • Retention rate

    Investigators will collect data on the number of subjects screened, randomized, and complete the final in-person visit

    Baseline to week 24

Secondary Outcomes (5)

  • Asthma control as assessed by the Asthma Control Test (ACT) score

    Baseline to week 24

  • Change in Asthma exacerbations rate

    Baseline to week 24

  • Pre-bronchodilator lung function

    Baseline to week 24

  • Fractional exhaled nitric oxide (FeNO)

    Baseline to week 24

  • Airways hyperresponsiveness

    Baseline to week 24

Study Arms (2)

Metformin hydrochloride extended-release tablets

ACTIVE COMPARATOR

Metformin hydrochloride extended-release tablets 2000 mg once daily

Drug: Metformin hydrochloride extended-release tablets

Visually identical placebo tablets

PLACEBO COMPARATOR

Placebo tablet once daily

Drug: Visually identical placebo Metformin hydrochloride extended-release tablets

Interventions

titrated to 2000 mg once daily

Metformin hydrochloride extended-release tablets

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Physician-diagnosed asthma on maintenance therapy
  • Not well-controlled asthma (ACT score \<20, or at least one asthma exacerbation requiring corticosteroids in the prior 12 months)
  • Overweight or obesity: Body mass index ≥25kg/m2
  • Adult: Age ≥18

You may not qualify if:

  • Currently pregnant, expect to become pregnant in the next 6 months or are currently breastfeeding
  • Major cardiovascular disease: heart failure, heart attack or stroke within the last 6 months
  • Other chronic lung disease, inclusive of chronic obstructive pulmonary disease, bronchiectasis, interstitial lung disease, pulmonary fibrosis
  • Active smoking or former smoker with ≥20 pack-year smoking history
  • Chronic kidney disease: estimated glomerular filtration rate ≤60 mL/min/1.73 m2
  • Heavy alcohol use: in a typical week, 8 or more drinks for a woman or 15 or more drinks for a man
  • Liver disease: elevation in aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \> 2x the upper limit of normal or prior diagnosis of liver disease
  • Anemia: hemoglobin \< 13 g/dl in males and hemoglobin \< 11 g/dl in females
  • Taking Glucagon Like Peptide 1(GLP-1) medications for weight loss
  • Diabetes (Hemoglobin A1C ≥ 6.5% or taking metformin or other medications used to treat diabetes)
  • Participation in any other clinical trial (observational studies are permitted)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Johns Hopkins University

Baltimore, Maryland, 21224, United States

RECRUITING

Baylor College of Medicine

Houston, Texas, 77030, United States

RECRUITING

MeSH Terms

Conditions

AsthmaOverweightObesity

Condition Hierarchy (Ancestors)

Bronchial DiseasesRespiratory Tract DiseasesLung Diseases, ObstructiveLung DiseasesRespiratory HypersensitivityHypersensitivity, ImmediateHypersensitivityImmune System DiseasesOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Meredith C McCormack, M.D., M.H.S.

    Johns Hopkins University

    PRINCIPAL INVESTIGATOR
  • Tianshi D Wu, M.D., M.H.S.

    Baylor College of Medicine

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Rachelle Koehl, M.S.

CONTACT

Meredith C McCormack, M.D., M.H.S.

CONTACT

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 15, 2024

First Posted

February 22, 2024

Study Start

December 9, 2024

Primary Completion (Estimated)

September 30, 2026

Study Completion (Estimated)

December 31, 2028

Last Updated

January 16, 2026

Record last verified: 2026-01

Locations