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SuspendedNCT07132918Updated Oct 30, 2026

HEARTS Trial for Thoracic Cancers

A Phase 2 interventional study of MRgART and LINAC in Non-Small Cell Lung Cancer (Stage III), Esophageal Cancer Stage I-III and Esophagogastric Cancer Stage I-III, sponsored by University of Wisconsin, Madison. Suspended at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-30.

Sponsored by University of Wisconsin, Madison · Phase 2, Interventional, and Treatment

Why this study was suspended
Funding issues
Updated Oct 30, 2026Now SuspendedGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to compare a new way of using magnetic resonance-guided adaptive radiation therapy (MRgART) to the standard of care linear accelerator (LINAC) radiation treatment in people with cancer in the thoracic region near the heart.

The main question it aims to answer is whether MRgART affects the heart differently than LINAC.

Participants will:

  • Receive radiation therapy
  • Undergo MRIs and bloodwork
  • Complete quality of life questionnaires
Read the detailed description

This clinical trial, The cARdiac Radiation Therapy Sparing (HEARTS) trial, will compare MR-guided adaptive radiation therapy (MRgART) with substructure sparing to standard of care x-ray based linac RT with whole-heart dose metrics for patients with cancer in the thoracic region based on longitudinal changes in cardiac function using MRI, quality of life, cardiac waveforms, and blood biomarkers.

02

Conditions studied

  • Non-Small Cell Lung Cancer (Stage III)
  • Esophageal Cancer Stage I-III
  • Esophagogastric Cancer Stage I-III
  • Thymoma and Thymic Carcinoma Stage II-III
  • Other Cancers in the Thoracic Region
03

In context

Carcinoma, Non-Small-Cell Lung

7,620 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,838 are open to participants now.

This study's planned enrollment of 60 is close to the median of 62 across 6,019 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.

Browse Carcinoma, Non-Small-Cell Lung studies →

Lead sponsor

University of Wisconsin, Madison is the lead sponsor of 1,188 studies on the registry; 181 are open to participants now.

Of its 157 completed or terminated interventional studies of FDA-regulated products, 118 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age > 18 years at the time of consent.
  • Dosimetric eligibility criteria met using endpoints from QUANTEC (>10% of heart receives > 25 Gy) as determined through rapid auto-planning
  • Participants with or cytologically proven AJCC, 8th edition including:

    • Stage IIB, IIIA, IIIB, IIIC, or IV non-operable non-small cell lung cancer
    • Limited stage small cell lung cancer, once daily treatment (excluding twice per day fractionation schemes). Stage I-III N0-2 disease esophageal/esophagogastric cancer
    • Stage II or III thymoma/thymic carcinoma
    • Other cancers in the thoracic region that meet the dosimetric and other clinical trial criteria, for example lymphoma sarcoma.
  • Participants must have a course of daily fractionated RT planned of at least 15 treatment fractions, typically ranging from 1.8 to 4 Gy/fraction

Exclusion criteria

Exclusion Criteria:

  • Definitive clinical or radiologic evidence of disease with \<12 months
  • Prior thoracic radiotherapy significantly overlapping the heart region
  • to MRI
  • Severe, active co-morbidity defined as follows: Functional Classification III/IV are not eligible.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    MRgART radiation therapy

    Participants randomized to this arm will receive magnetic resonance-guided adaptive radiation therapy (MRgART)

    Radiation: MRgART

  • Experimental
    LINAC radiation therapy

    Participants randomized to this arm will receive linear accelerator (LINAC) radiation therapy

    Radiation: LINAC

Interventions

  • RadiationMRgART

    Magnetic Resonance-guided Adaptive Radiation Therapy (MRgART) is a form of MRgRT that incorporates daily adaptive planning, or making a new treatment plan each treatment, and real-time imaging during treatment delivery.

  • RadiationLINAC

    Daily 3D x-ray scans will be obtained for radiation delivery to confirm tumor and organ at risk placement.

06

What researchers measure

Primary outcomes

  1. Change in left ventricular ejection fraction (LVEF)

    Changes are measured between timepoints as determined by cardiac MRI. LVEF is calculated by dividing the left ventricular (LV) stroke volume (the amount of blood pumped out) by the end-diastolic volume (the amount of blood in the left ventricle before contraction) and multiplying by 100.

    Time frame: Pre-treatment, 3 months post-treatment, 6 months post-treatment

Secondary outcomes

  1. Change in right ventricular function (RVEF)

    Changes are measured between timepoints as determined by cardiac MRI. RVEF is calculated by dividing the right ventricular (RV) stroke volume (the amount of blood pumped out) by the end-diastolic volume (the amount of blood in the right ventricle before contraction) and multiplying by 100.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  2. Change in left and right ventricular (LV/RV) volumes

    Volumes of LV and RV chamber - each derived from tracing the endocardial borders at end-diastole and end-systole in a cardiac MRI scan.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  3. Change in myocardial strain

    Myocardial strain measures how much the heart muscle stretches or contracts during a heartbeat. Strain is measured on cardiac MRI images by tracking myocardial deformation using feature tracking techniques, which analyze changes in myocardial length or orientation between end-diastole and end-systole to calculate strain values.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  4. Change in T1 Mapping

    By acquiring a series of images at different inversion times (Modified Look-Locker Inversion recovery sequence), the longitudinal relaxation time of myocardial tissue on a pixel-by-pixel basis to derive the T1 map.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  5. Change in extracellular volume fraction (ECV)

    Extracellular volume fraction (ECV) is measured in cardiac MRI by first acquiring T1 maps of the heart before and after administering a gadolinium-based contrast agent, then using the change in T1 values of both the myocardium and blood pool-along with the patient's hematocrit-to calculate the proportion of the heart tissue made up of extracellular space.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  6. Change in T2 mapping

    T2 maps are derived by acquiring images at multiple echo times using a T2-prepared sequence and analyzed.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  7. Change in semi-quantitative perfusion

    Semi-quantitative perfusion analysis in cardiac MRI is used to assess myocardial blood flow by analyzing the dynamic passage of contrast agent through the heart muscle. The process involves acquiring first-pass contrast-enhanced images, defining myocardial and blood pool contours, segmenting the myocardium, and generating signal intensity curves to extract parameters such as upslope and time to peak-providing insight into regional perfusion

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  8. Change in late gadolinium enhancement

    Late gadolinium enhancement (LGE) in cardiac MRI is measured by acquiring inversion recovery images post-contrast, nulling normal myocardium, and quantifying enhancing regions using signal intensity thresholds relative to remote myocardium to assess myocardial scar or fibrosis.

    Time frame: Pre-treatment, 3 months, 6 months post-treatment

  9. Change Kansas City Cardiomyopathy Questionnaire (KCCQ-12) score

    Using the abbreviated Kansas City Cardiomyopathy Questionnaire (KCCQ-12) quality of life will be measured. The KCCQ-12 is a heart failure-specific health status measure that provides scores for physical limitation, symptom frequency, quality of life, and social limitation. Scores range from 0 to 100, with higher scores indicating better health. Ranges like "very poor to poor" (0-24), "poor to fair" (25-49), "fair to good" (50-74), and "good to excellent" (75-100), can add further categorization.

    Time frame: Baseline to 12 months post-treatment (up to 14 months)

  10. Change in Functional Assessment of Cancer Therapy - Lung (FACT-L) Score

    The FACT-L Scale is a 36-item self-report instrument that measures multidimensional quality of life. It is scored on a 5-point Likert scale ranging from 0-4, with 0 = not at all and 4 = very much. Scores range from 0-144 where higher scores indicate greater quality of life.

    Time frame: Baseline to 12 months post-treatment (up to 14 months)

  11. Toxicity related to cancer

    Toxicity will be measured by number of adverse events

    Time frame: Baseline, mid-treatment, end of treatment, 3, 6,9, and 12 months post-treatment

07

Study locations

1 site
  • University of Wisconsin - Madison
    Madison, Wisconsin 53705, United States
08

References and documents

Individual participant data

Plan to share: Yes — De-identified individual participant data (IPD) collected during the study will be shared in accordance with the NIH Data Management and Sharing Policy. Data will be made available to qualified researchers for the purpose of secondary analyses that are consistent with the informed consent provided by participants. The data will be de-identified to protect participant privacy and confidentiality.

Supporting information: Study protocol, Statistical analysis plan

Time frame: Data will be made available no later than 12 months after the primary completion date or upon publication of the primary results, whichever comes first. Data will remain available for a minimum of 5 years

Access criteria: Researchers must submit a data access request that includes a research proposal, data use plan, and institutional review board (IRB) approval or exemption. Access will be granted through a controlled-access repository following review and approval by a data access committee. A Data Use Agreement (DUA) must be signed prior to data release.

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Status
Recruiting→Suspended Funding issues
changed Oct 30, 2026
Show all 1 update
  1. Oct 30, 2026
    Recruiting→Suspended
    Why stopped Funding issues
    + 2 other changes: contact details and site details

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07132918
Responsible party
Sponsor
First posted
Aug 20, 2025
Start date
Oct 8, 2025
Primary completion
Mar 2029 (estimated)
Completion
Mar 2029 (estimated)
Last update
Oct 30, 2026

Study contacts

Carri Glide-Hurst, PhD, DABR, FAAPM
principal investigator · University of Wisconsin, Madison

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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