NCT06150560

Brief Summary

The purpose of this study is to evaluate the effectiveness and mechanism of action of Losartan in the treatment of coarctation of aorta.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
120

participants targeted

Target at P25-P50 for phase_3

Timeline
25mo left

Started Apr 2024

Typical duration for phase_3

Geographic Reach
1 country

1 active site

Status
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 Progress50%
Apr 2024Jun 2028

First Submitted

Initial submission to the registry

November 21, 2023

Completed
8 days until next milestone

First Posted

Study publicly available on registry

November 29, 2023

Completed
4 months until next milestone

Study Start

First participant enrolled

April 1, 2024

Completed
4.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2028

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2028

Last Updated

August 3, 2025

Status Verified

July 1, 2025

Enrollment Period

4.2 years

First QC Date

November 21, 2023

Last Update Submit

July 30, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Left Ventricular (LV) Fibrosis

    LV fibrosis will be measured via indexed Extracellular Volume (iECV) which will be calculated as extracellular volume fraction (ECV%) x LV End Diastolic Volume Index as evaluated during Cardiac Magnetic Resonance Imaging (CMRI).

    Baseline; Week 52

Secondary Outcomes (1)

  • Change in Exercise Capacity (peak VO2)

    Baseline; Week 52

Study Arms (3)

Losartan Group

EXPERIMENTAL

Subjects with Coarctation of Aorta (COA) and high blood pressure will receive Losartan.

Drug: Losartan

Amlodipine Group

ACTIVE COMPARATOR

Subjects with Coarctation of Aorta (COA) and high blood pressure will receive Amlodipine.

Drug: Amlodipine

Placebo Group

PLACEBO COMPARATOR

Subjects with Coarctation of Aorta (COA) and high blood pressure will receive Placebo.

Drug: Placebo

Interventions

50mg administered orally once daily for 52 weeks.

Also known as: Cozaar
Losartan Group

5mg Amlodipine administered orally once daily for 52 weeks.

Amlodipine Group

Oral capsules that contain no active drug ingredients administered orally once daily for 52 weeks.

Placebo Group

Eligibility Criteria

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

You may qualify if:

  • B/S1 hypertension
  • SBP 100-139 average based on 3 office measurements.
  • Age 18 or Older
  • Previous COA Repair

You may not qualify if:

  • Currently on beta blocker (BB) therapy
  • Pregnancy/lactating
  • eGFR\<30
  • Hyperkalemia (serum potassium \>5.5mmol/L)
  • Severe Aortic or Mitral valve stenosis or regurgitation
  • Epicardial CAD diagnosis
  • Received antihypertensive medications within the past year

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mayo Clinic in Rochester

Rochester, Minnesota, 55905, United States

RECRUITING

MeSH Terms

Conditions

Aortic CoarctationHypertension

Interventions

LosartanAmlodipine

Condition Hierarchy (Ancestors)

Heart Defects, CongenitalCardiovascular AbnormalitiesCardiovascular DiseasesHeart DiseasesCongenital AbnormalitiesCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesVascular Diseases

Intervention Hierarchy (Ancestors)

Biphenyl CompoundsBenzene DerivativesHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsOrganic ChemicalsImidazolesAzolesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsTetrazolesDihydropyridinesPyridines

Study Officials

  • Alexander Egbe, MBBS, MPH

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Central Study Contacts

ACHD Research Program

CONTACT

Alexander Egbe, MBBS, MPH

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

November 21, 2023

First Posted

November 29, 2023

Study Start

April 1, 2024

Primary Completion (Estimated)

June 1, 2028

Study Completion (Estimated)

June 1, 2028

Last Updated

August 3, 2025

Record last verified: 2025-07

Data Sharing

IPD Sharing
Will not share

Locations