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Clinical Trial Summary

The study hopes to determine whether patients with left-sided breast cancer are at an increased risk of cardiac changes due to radiation to the breast +/- Anthracycline-based chemotherapy +/- Herceptin and whether a deep inspiration breath hold (DIBH) technique during radiotherapy treatments would further reduce dosimetric dose to the heart as compared to the conventional free breathing (FB) technique thus reducing cardiac toxicity as measured by cardiac MRI using left ventricular end-diastolic volume (LVEDV) as a metric. Bio fluid samples will also be collected to investigate specific biomarkers of breast cancer: BNP, PIIINP and CITP


Clinical Trial Description

Patients with left-sided breast cancer who receive adjuvant breast or chest wall radiation have increased risk of treatment related cardiovascular morbidity. The risk of cardiac morbidity and mortality is increased when a patient receives radiation following adjuvant chemotherapy and Herceptin. The dose-volume histogram (DVH) parameters associated with increased cardiac toxicity include volume of heart irradiated, total radiation dose received by the left ventricle (LV), V25 and mean cardiac dose. Even though modern RT treatments like 3DCRT and IMRT can reduce the mean dose to the heart, the maximum dose to the left side of the heart/LV may not be reduced if the target is close to the heart. The hypothesis is that DIBH RT can safely and effectively reduce the heart dose, especially the dose to the LV, that could lead to reduction in the incidence of radiation induced cardiovascular morbidity and mortality.

Radiotherapy has detrimental effects on cardiac function due to remodeling of the cardiac tissue that receive radiation. We believe that the radiation related acute effects on heart tissue can be detected with cardiac functional MRI. The study will quantify the acute RT related effects. To our knowledge, cardiac MRI has not been explored as a non invasive technique to quantify RT +/- chemotherapy related effects. ;


Study Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Related Conditions & MeSH terms


NCT number NCT02052102
Study type Interventional
Source AHS Cancer Control Alberta
Contact Kurian Joseph, MB, FFRRCSI, FRCR, FRCPC
Phone 780-432-8755
Email kurian.joseph@albertahealthservices.ca
Status Recruiting
Phase Phase 2
Start date October 2014
Completion date March 2017

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