NCT03879629

Brief Summary

Breast cancer patients undergoing trastuzumab-based HER2-directed therapy are at risk of heart function decline or heart failure symptoms, but it is unknown if, when, and for how long cardiovascular protective strategies, e.g. with a beta-blocker, could help. This study randomly assigns those taking curative-intent trastuzumab-based HER2-directed therapy to the beta-blocker carvedilol-either when significant heart function decline or subtle early signs of heart injury (either by elevation of a cardiac blood biomarker, i.e. cardiac troponin, or by an abnormal heart ultrasound marker, i.e. global longitudinal strain) are noted, or preventatively before beginning trastuzumab-based HER2-directed therapy. This study will further randomly assign those patients on carvedilol to either discontinuation at the end of trastuzumab-based HER2-directed therapy or continuation for another year, providing much needed clinical trial data on what the best strategy ("tactic") for those at risk of cardiotoxicity with trastuzumab-based HER2-directed therapy is.

Trial Health

75
On Track

Trial Health Score

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

Enrollment
184

participants targeted

Target at P75+ for phase_2 breast-cancer

Timeline
10mo left

Started Aug 2019

Longer than P75 for phase_2 breast-cancer

Geographic Reach
1 country

5 active sites

Status
active not 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 Progress89%
Aug 2019Feb 2027

First Submitted

Initial submission to the registry

March 8, 2019

Completed
11 days until next milestone

First Posted

Study publicly available on registry

March 19, 2019

Completed
5 months until next milestone

Study Start

First participant enrolled

August 21, 2019

Completed
6.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2026

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2027

Expected
Last Updated

November 20, 2025

Status Verified

November 1, 2025

Enrollment Period

6.5 years

First QC Date

March 8, 2019

Last Update Submit

November 18, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Rate of asymptomatic and symptomatic cardiac dysfunction

    Incidence of heart failure or asymptomatic decline in left-ventricular ejection fraction (LVEF) by \>10% in patients whose LVEF is ≥50% or LVEF drop ≥5% in those with a decrease to \<50% (primary outcome measure)

    1 year

  • Rate of reversible cardiac function decline

    Reversible LVEF decline to within 5% of baseline (secondary primary outcome measure)

    1 year

Secondary Outcomes (2)

  • Cardiac function changes after completion of HER2-directed therapy

    1 year

  • Gene variants and risk of cardiotoxicity and response to therapy

    2 years

Study Arms (3)

Pre-Emptive Strategy

EXPERIMENTAL

Carvedilol titrated to maximally tolerated doses (3.125 mg to 25 mg twice a day) initiated one week before start of therapy and continued until end of therapy

Drug: Carvedilol

Reactive Strategy

EXPERIMENTAL

Carvedilol titrated to maximally tolerated doses (3.125 mg to 25 mg twice a day) initiated after documentation of subclinical cardiotoxicity, defined by an abnormal global longitudinal strain (GLS) or high-sensitive cardiac troponin (hsTnI) elevation and continued until end of therapy

Drug: Carvedilol

Standard of Care

ACTIVE COMPARATOR

Carvedilol titrated to maximally tolerated doses (3.125 mg to 25 mg twice a day) initiated after documentation of a drop in LVEF by \>10% to a value less than 53% and continued until end of therapy

Drug: Carvedilol

Interventions

oral Carvedilol maximally tolerated doses 3.125 mg to 25 mg twice a day

Also known as: Coreg
Pre-Emptive StrategyReactive StrategyStandard of Care

Eligibility Criteria

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

You may qualify if:

  • ≥18 years of age,
  • new or locally recurrent diagnosis of HER2+ breast cancer that will be treated with curative intent
  • planned HER2-directed (any therapy targeting HER2 signaling including Trastuzumab +/- pertuzumab or trastuzumab-emtansine (T-DM1) Nerantinib and lapatinib will not be considered. "HER2-directed therapy" or "anti-HER-2".

You may not qualify if:

  • history of HF of any class and type, or diagnosis of cardiomyopathy in the past,
  • LVEF \<50% at screening,
  • intolerance to beta-blocker,
  • baseline use of any beta-blocker for coronary artery disease including myocardial infarction
  • current ACE inhibitor or ARB therapy for hypertension in the presence of diabetes and/or for chronic kidney disease/proteinuria,
  • on active therapy with amiodarone, sotalol, or any other antiarrhythmic
  • Diagnosis of asthma with current daily use of anti-asthmatic therapy
  • heart rate \< 50 BPM at screening (average of 3 most recent readings)
  • history of or current sick sinus syndrome,
  • AV block grade II or higher (unless patient has a permanent pacemaker) at screening,
  • systolic blood pressure \< 90 mmHg at screening (average of 3 most recent readings)
  • severe hepatic dysfunction, as defined by NCI ODWG (total bilirubin \>3x ULN, any AST elevation) or Child Pugh C class
  • pregnancy
  • Metastatic breast cancer (distant metastases)
  • Active systemic treatment for non-breast cancer

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (5)

Mayo Clinic

Phoenix, Arizona, 85054, United States

Location

Mayo Clinic in Florida

Jacksonville, Florida, 32224, United States

Location

Mayo Clinic in Rochester

Rochester, Minnesota, 55905, United States

Location

Washington University in St. Louis

St Louis, Missouri, 63110, United States

Location

MD Anderson Cancer Center

Houston, Texas, 77030, United States

Location

Related Links

MeSH Terms

Conditions

Breast Neoplasms

Interventions

Carvedilol

Condition Hierarchy (Ancestors)

Neoplasms by SiteNeoplasmsBreast DiseasesSkin DiseasesSkin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

PropanolaminesAmino AlcoholsAlcoholsOrganic ChemicalsPropanolsAminesCarbazolesIndolesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingHeterocyclic CompoundsHeterocyclic Compounds, 3-Ring

Study Officials

  • Joerg Herrmann, MD

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
NONE
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 8, 2019

First Posted

March 19, 2019

Study Start

August 21, 2019

Primary Completion

February 28, 2026

Study Completion (Estimated)

February 28, 2027

Last Updated

November 20, 2025

Record last verified: 2025-11

Data Sharing

IPD Sharing
Will not share

Locations