Assessment of Left-sided Cardiac Sparing Through the Use of 3-dimensional Surface Matching-based Deep Inspiration Breath Hold and Active Breathing Control

Left-Sided Breast Cancer Clinical Trial

Official title:

Assessment of Left-sided Cardiac Sparing Through the Use of 3-dimensional Surface Matching-based Deep Inspiration Breath Hold and Active Breathing Control

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03459898
• Other study ID #: 268-2017
• Status: Completed
• Phase: N/A
• Start date: May 19, 2018
• Est. completion date: January 30, 2022

Study information

• Verified date: May 2022
• Source: Sunnybrook Health Sciences Centre
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The standard treatment for breast cancer is surgery followed by adjuvant breast radiation therapy in most cases. For left sided breast cancers, the heart dose delivered by the radiation treatment is often of particular concern. In order to spare the heart, different strategies are currently available, including active breathing control (ABC) and voluntary deep in inspiration breath hold (DIBH) (both strategies are currently being used at our centre). To perform accurate heart-sparing treatments, it is important to ensure that patients are positioned consistently. One available approach is through surface imaging which tracks the position of a portion of the skin surface, known as the AlignRT system (VisionRT Ltd, London, UK).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 40
• Est. completion date: January 30, 2022
• Est. primary completion date: December 31, 2021
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Women with diagnosis of left-sided breast malignancy
• Women who require left chest wall or breast irradiation status post mastectomy or lumpectomy
• Treatment with modified wide tangents to include IMCs
• Treatment with four-field technique
• Age >18 years
• Performance status ECOG <3
• Patient must be able to maintain a 30 second breath hold
• Conventional chest wall or breast radiation delivery dose of 50Gy/25 or hypofractionated chest wall/breast radiation delivery dose of 42.56Gy/16 with or without a boost

Exclusion Criteria:

• Right sided breast cancer patients
• Treatment with partial breast irradiation
• Previous left breast/chest wall irradiation
• Locally advanced breast cancer
• Pregnant patients
• Unable to follow commands

Related Conditions & MeSH terms

• Left-Sided Breast Cancer

Intervention

Device:
• AlignRT system (VisionRT Ltd., London, UK)
To review our institutional clinical experience of applying the AlignRT system to monitor patient setup and reproducibility when using ABC and DIBH techniques in the treatment of left-sided breast cancer patients.

Locations

Country	Name	City	State
Canada	Sunnybrook Health Sciences Centre	Toronto	Ontario

Sponsors (1)

Lead Sponsor	Collaborator
Sunnybrook Health Sciences Centre

Country where clinical trial is conducted

Canada, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Reproducibility of ABC or vDIBH set-up as measured by Align RT.	Reproducibility of set-up will be evaluated by determining discrepancies in patient's surface between treatment and CT simulation which will be acquired with the Align RT system using multiple measures along with daily portal images during treatment and weekly CBCTs.	2 years
Primary	Mean heart dose as determined using Align RT.	Estimate the change in mean heart dose for each breath-hold/heart sparing strategy by: i. Converting differences in heart position on 2D portal images acquired during treatment to 3D volumes on Pinnacle plans.; ii. Using the CBCT images (acquired weekly), to recalculate dose to heart based on the patient's position and anatomy that day.	2 years
Secondary	The impact of Align RT with vDIBH as compared to vDIBH without AlignRT on quality of life as assessed by the EORTC core QoL questionnaire.	QoL will be assessed using the EORTC core QoL questionnaire (QLQ-C30) which is a well-validated and widely used QoL questionnaire available in multiple languages (12,13). QLQ-C30 is composed of 30 questions that represent 5 functional scales (physical, role, cognitive, emotional and social), 3 symptom scales (fatigue, nausea and vomiting, and pain), and a global health / QoL scale. The questionnaire will be completed by patients at time of radiation simulation as baseline, at completion of RT (during routine review) and at the 6-8 week follow-up.	2 years