Breast Cancer Clinical Trial
Official title:
Breast Screening Atypia and Subsequent Development of Cancer: an Observational Analysis of the Sloane Database in England (Sloane Atypia Cohort Study)
Verified date | May 2023 |
Source | University of Warwick |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
During breast screening, atypical epithelial proliferations (atypia) can be detected. These are not cancer, but may mean that a woman is more likely to develop breast cancer in the future. This study explores how atypia develop into breast cancer in terms of number of women, time to cancer development, cancer type and severity, and whether this varies for different types of atypia. The results will be used to create new guidelines for how women with atypia should be followed up.
Status | Active, not recruiting |
Enrollment | 3000 |
Est. completion date | December 30, 2023 |
Est. primary completion date | December 30, 2023 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 47 Years to 73 Years |
Eligibility | Inclusion Criteria: - Diagnosis of epithelial atypia (ADH (including AIDEP), LISN (both ALH and LCIS) and FEA) in the Sloane database between 1st January 2003 and 30th June 2018 Exclusion Criteria: - bilateral primary cases - the "best prognosis" atypia of the bilateral primaries - atypia with co-existing DCIS - pleomorphic LCIS (as these are managed akin to DCIS) - unknown type of atypia - cases not from England - patients without follow-up until 31 December 2018 |
Country | Name | City | State |
---|---|---|---|
United Kingdom | Univesity of Warwick | Coventry | Warwickshire |
Lead Sponsor | Collaborator |
---|---|
University of Warwick | King's College London, The Leeds Teaching Hospitals NHS Trust, University Hospitals Coventry and Warwickshire NHS Trust |
United Kingdom,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Invasive breast cancer at 3 years following atypia diagnosis | Invasive breast cancer rate at 3 years following atypia diagnosis (representing the first round of screening) for all atypia, by type of atypia, by level of management off atypia, by three 5-year periods (deviding study period into 2003 to 2007, 2008 to 2012 and 2013 to 2018), by location (ipsilateral, contralateral), by age group, and by complete vs incomplete reporting of atypia cases by screening centres | Cumulative incidence of invasive breast cancer with all cause mortality as a competing risk at 3 years following atypia diagnosis | |
Primary | Invasive breast cancer at 6 years following atypia diagnosis | Invasive breast cancer rate at 6 years following atypia diagnosis (representing the second round of screening) for all atypia, by type of atypia, by level of management off atypia, by three 5-year periods (deviding study period into 2003 to 2007, 2008 to 2012 and 2013 to 2018), by location (ipsilateral, contralateral), by age group, and by complete vs incomplete reporting of atypia cases by screening centres | Cumulative incidence of invasive breast cancer with all cause mortality as a competing risk at 6 years following atypia diagnosis | |
Secondary | Invasive breast cancer at 1-year following atypia diagnosis | Invasive breast cancer rate at 1-year following atypia diagnosis (representing likely missed cancers at screening) for all atypia, by type of atypia, by level of management of atypia, by three 5-year periods (deviding study period into 2003 to 2007, 2008 to 2012 and 2013 to 2018), by location (ipsilateral, contralateral), by age group, and by complete vs incomplete reporting of atypia cases by screening centres | Cumulative incidence of invasive breast cancer with all cause mortality as a competing risk at 1-year following atypia diagnosis | |
Secondary | Invasive cancer or non-invasive cancer (Ductal carcinoma in situ (DCIS)) at 1 year following atypia diagnosis | Rate of invasive breast cancer or DCIS at 1 year following atypia diagnosis for all atypia and by type and location of atypia | Cumulative incidence of invasive breast cancer or DCIS with all cause mortality as a competing risk at 1 year following atypia diagnosis | |
Secondary | Invasive cancer or non-invasive cancer (Ductal carcinoma in situ (DCIS)) at 3 years following atypia diagnosis | Rate of invasive breast cancer or DCIS at 3 years following atypia diagnosis for all atypia and by type and location of atypia | Cumulative incidence of invasive breast cancer or DCIS with all cause mortality as a competing risk at 3 years following atypia diagnosis | |
Secondary | Invasive cancer or non-invasive cancer (Ductal carcinoma in situ (DCIS)) at 6 years following atypia diagnosis | Rate of invasive breast cancer or DCIS at 6 years following atypia diagnosis for all atypia and by type and location of atypia | Cumulative incidence of invasive breast cancer or DCIS with all cause mortality as a competing risk at 6 years following atypia diagnosis |
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