Breast Cancer Long-term Outcomes on Cardiac Functioning: a Longitudinal Study
BLOC-II
1 other identifier
observational
455
1 country
1
Brief Summary
Rationale: In addition to surgery, effective breast cancer (BC) treatment typically requires chemotherapy, radiotherapy, or both. However, it is still unclear whether patients with BC are at increased risk of long-term cardiac dysfunction due to the adverse effects of these therapies. In a cross-sectional study in primary care, a comparison on cardiac dysfunction between 350 BC survivors and 350 age- and general practitioner (GP)- matched controls without cancer was made. In that study, BC survivors were at increased risk of mild systolic cardiac dysfunction (left ventricle ejection fraction (LVEF)\< 54%). By contrast, there was no significant difference in an LVEF \< 50% or in diastolic dysfunction. To date it remains uncertain whether the mild or subclinical dysfunction we observed predicts further cardiac deterioration. Consequently, the translation of these results into guidelines for the daily practice of the GP is unclear. Objective: The aim of the here proposed study is to clarify whether cardiac function in survivors of BC should be monitored by GPs, by assessing whether an unselected population of long-term BC survivors is at increased risk of developing cardiac dysfunction, whether in this group at-risk subgroups exists, and what factors are associated with the highest risk. Study design: A new assessment of cardiac function among women included in the BLOC-I study. This produces a longitudinal matched cohort design consisting of two cohorts in primary care. Study population: Survivors of BC, diagnosed ≥11 years ago who received chemotherapy and/or radiotherapy, and a matched reference population with no history of cancer. All participants participated in the Breast cancer Long-term Outcome of Cardiac function (BLOC-I) study. Main study parameters/endpoints: Left ventricular systolic dysfunction. Systolic cardiac dysfunction is defined as a LVEF \<54/50/45%.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Sep 2022
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
September 1, 2022
CompletedFirst Submitted
Initial submission to the registry
November 14, 2022
CompletedFirst Posted
Study publicly available on registry
May 9, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2026
ExpectedMay 29, 2024
May 1, 2024
3.3 years
November 14, 2022
May 28, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Left ventricular systolic dysfunction
Prevalance of systolic cardiac dysfunction defined as a LVEF \<54%
through study completion (from Ocotober 2022 - December 2024)
Secondary Outcomes (4)
Clinically used LVEF cut-off points <45% and <50%
through study completion (from Ocotober 2022 - December 2024)
Course of cardiac function
through study completion (from Ocotober 2022 - December 2024)
Cardiovascular diseases
through study completion (from Ocotober 2022 - December 2024)
Symptoms of hearth failure
through study completion (from Ocotober 2022 - December 2024)
Other Outcomes (7)
Patient characteristics
through study completion (from Ocotober 2022 - December 2024)
Physical activity
through study completion (from Ocotober 2022 - December 2024)
Depression
through study completion (from Ocotober 2022 - December 2024)
- +4 more other outcomes
Study Arms (2)
Breast cancer survivors
Survivors of BC, diagnosed ≥11 years ago, who received chemotherapy and/or radiotherapy
Reference population
Age and GP matched reference population without a history of cancer
Interventions
During echocardiography, the following parameters will be assessed: * Dimensions * Left ventricle function * Right ventricle function * Valves: Aorta valve and pulmonic valve * Other findings such as: frequency, rhythm, quality
Eligibility Criteria
BC survivors were matched with women of the same age (±1 year) who had the same GP, but who had no history of cancer or cancer treatment (chemotherapy or radiotherapy). A longitudinal matched cohort design consisting of two cohorts in primary care: one with survivors of BC, diagnosed ≥11 years ago who received chemotherapy and/or radiotherapy, and one with a matched reference population with no history of cancer.
You may qualify if:
- Patients who previously took part in de BLOC-I study will be included. These criteria were:
- females diagnosed with stage I-III BC at least five years ago or local or locoregional recurrence of BC at least five years ago
- treatment with chemotherapy and/or radiotherapy.
You may not qualify if:
- Patients unfit to travel to the hospital due to severe mental or physical illness, based on assessment by their GP.
- metastatic disease at the time of BC diagnosis;
- BC treatment after 80 years of age;
- history of treatment for other types of cancer.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University Medical Center Groningen
Groningen, 9700 AD, Netherlands
Related Publications (1)
Boerman LM, Maass SWMC, van der Meer P, Gietema JA, Maduro JH, Hummel YM, Berger MY, de Bock GH, Berendsen AJ. Long-term outcome of cardiac function in a population-based cohort of breast cancer survivors: A cross-sectional study. Eur J Cancer. 2017 Aug;81:56-65. doi: 10.1016/j.ejca.2017.05.013. Epub 2017 Jun 8.
PMID: 28601706BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- CROSS SECTIONAL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 14, 2022
First Posted
May 9, 2023
Study Start
September 1, 2022
Primary Completion
December 31, 2025
Study Completion (Estimated)
December 31, 2026
Last Updated
May 29, 2024
Record last verified: 2024-05