Safety of Ultra-hypofractionated Whole Breast Irradiation After Breast-conserving Surgery (SAFE-FORWARD)

  • STATUS
    Recruiting
  • End date
    Dec 23, 2022
  • participants needed
    60
  • sponsor
    Azienda Ospedaliero-Universitaria Careggi
Updated on 23 March 2022
carcinoma
endocrine therapy
hormone therapy
carcinoma in situ
mastectomy
ductal carcinoma in situ
breast-conserving surgery
ductal carcinoma
breast reconstruction

Summary

SAFE-FORWARD is an observational prospective cohort study. Patient population included both invasive and ductal carcinoma in situ (DCIS) breast cancer receiving ultra-hypofractionated whole breast irradiation (26 Gy in 5 fractions) after breast conserving surgery, as per physician choice. Adjuvant endocrine therapy as per local policy is allowed. Main exclusion criteria are mastectomy with or without breast reconstruction, neoadjuvant and/or adjuvant chemotherapy, and needs for a tumor bed radiation boost.

All enrolled patients will be prospectively monitored for 12 months, receiving a complex cardiological assessment before radiation therapy (RT) start (baseline), and at 2-, 6-, and 12-month after RT end of treatment. Both acute- , defined as adverse events recorded within the first 90 days since RT start, and early-late toxicity, will be scored according to EORTC (European Organisation for Research and Treatment of Cancer)/Radiation Therapy Oncology Group (RTOG) and CTCAE (v.5) scales.

Patients will undergo six-monthly follow-up clinical visits for the first 5 years and annual follow-up visits thereafter up to 10 year, as per clinical local practice. Breast cosmesis will be evaluated through the use of BCCT.core tool and assessment of the health-related quality of life will be performed through the EORTC quality of life questionnaire (QLQ) C30 and BR45 modules questionnaires at baseline, at the end of RT treatment, at 2- and 6-month.

Description

This prospective cohort study aims to assess heart toxicity and safety using a 1-week radiation schedule regimen of 26 Gy in five daily fractions.

The primary endpoint was defined as detection of any subclinical impairment in myocardial function and deformation (decrease ≥10%) measured with standard and 3-dimensional (3D) echocardiography and left ventricular (LV) global longitudinal strain (GLS).

Cardiac assessment. Medical history, electrocardiogram (EKG), clinical examination with specific attention to signs of heart failure, New York Heart Association (NYHA) class and Canadian angina grading scale score were recorded during each visit. Transthoracic echocardiography was performed with a commercially available system (EPIQ, X5-1 transducer, Philips Healthcare, Andover, Massachusetts). All measurements were performed and reported accordingly to the American Society of Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI) recommendations. Each measure was averaged over three cardiac cycles. Two-dimensional LVEF (2D-LVEF) was measured by Simpson rule, throughout apical 4- and 2-chamber views. LV mass was calculated from LV oriented M-mode tracings using the Devereux formula, ASE convention, and was indexed to body surface area (BSA). Diastolic function was evaluated by left atrial volume index, systolic pulmonary pressure, mitral inflow E/A pattern, E/A ratio, E velocity deceleration time, annular tissue Doppler e', and E/e' ratio. After optimizing image quality, maximizing frame rate, and minimizing foreshortening, which are all critical to reduce measurement variability, GLS measurements were made in the three standard apical views and averaged. LV 4-, 3-, and 2-chamber views were acquired during breath hold. From apical long-axis view to visualize aortic valve closure, using opening and closing clicks of the aortic valve the timing of aortic valve opening and closing on continuous wave (CW) Doppler imaging respect to EKG R wave was measured. Full-volume six-cycles gated acquisition breath hold images of left ventricle were acquired for Q-lab analysis to obtain end-diastolic volume, end systolic volume, indexed to BSA (EDVI and ESVI) and 3D-LVEF. Q-lab version in this study was 10.5. All echocardiography data was stored including the original Digital Imaging and Communications in Medicine (DICOM) images. All scans were read jointly by two experienced board certified echocardiographers who were blinded to all clinical characteristics. Systemic arterial pressure was measured simultaneously with echo measurements, by means of an arm-cuff sphygmomanometer.

Details
Condition Breast Cancer, Radiotherapy Side Effect
Treatment whole breast irradiation
Clinical Study IdentifierNCT04842409
SponsorAzienda Ospedaliero-Universitaria Careggi
Last Modified on23 March 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Invasive and ductal carcinoma in situ (DCIS) breast cancer
Indication to ultra-hypofractionated whole breast irradiation
Written informed consent
Aged more than 18 years old

Exclusion Criteria

Neoadjuvant and adjuvant chemotherapy
Tumor bed radiation boost prescription
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