Breast Cancer, HER2
Conditions
Keywords
breast cancer,HER2
Brief summary
This retrospective study aims to estimate the prevalence of different HER2 expression levels (HER2+, HER2-low, HER2 Ø) in approximately 200 breast cancer patients at FUSCC through the year of 2015 and 3000 breast cancer patients from about 10 medical centres in China between July 2021 and July 2022
Detailed description
This is a multicenter, retrospective study to estimate the prevalence of different HER2 expression levels (HER2+, HER2-low, HER2 Ø) in approximately 200 breast cancer patients at FUSCC through the year of 2015 and 3000 breast cancer patients from about 10 medical centres in China between July 2021 and July 2022. This study will be divided into two parts： The first part will include 200 subjects who were pathologically diagnosed with breast cancer at FUSCC between Jan 2015 and Dec 2015 (PART 1).This part will collect rescored HER2 expression level results based on the archived HER2 IHC slides and re-staining and re-scoring HER-2 IHC while relative demographic, treatment, and clinicopathologic data will be extracted from the FUSCC Breast Cancer Single Disease Database. The second part will include 3000 patients from all sites in China who were pathologically diagnosed with breast cancer between July 2021 and July 2022 (PART 2). This part will collect re-assessed HER2 expression level results based on the archived HER2 IHC slides. The general information of patients, diagnosis, clinicopathological information were collected from medical records, Hospital Information System (HIS) and Laboratory Information Management System (LIS). In PART 2, among 3000 patients, 270 from all participating sites except FUSCC should have enough tumor tissue for re-staining and re-scoring HER-2 IHC at FUSCC to analyse the concordance between leading site and other centers. In PART 2, among 3000 patients, 800 HER-2 IHC samples will be selected for the validation through AI-assisted HER2 assessment system
Interventions
None listed
Sponsors
AstraZeneca
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
Patients fulfilling all of the following criteria will be eligible for this study: * Male and female patients must have a histological confirmed diagnosis of BC * The patients must be ≥18 years old at the diagnosis. * In PART 1, all patients should be diagnosed at FUSCC between Jan 2015 and Dec 2015. * In PART 2, all patients should be diagnosed at all participating sites between July 2021 and July 2022. * Provision of at least 1 archived HER2 IHC slides associated with confirmed diagnosis of BC, which are in good condition for rescoring. * FISH result is available for HER2 IHC2+ in primary scoring.
Exclusion criteria
Patients who meet any of the following criteria will be disqualified from entering the study: * Absence of all demographic, histopathologic, clinicopathologic information . * Have a history of other malignancies, other than basal cell carcinoma of the skin and squamous cell carcinoma of the skin.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The Prevalence of different HER2 expression levels | Within one year | To estimate the prevalence of different HER2 expression levels (HER2+, HER2-low(defined as IHC 1+,2+/ISH-), HER2 Ø) in Chinese breast cancer patients in PART 2. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| ER status of histopathological | Within one year | ER status by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| HER2 IHC score of histopathological | Within one year | HER2 IHC score by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| FISH status of histopathological | Within one year | FISH status by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| The concordance between historical scoring and reassess scoring in each IHC score category (IHC score Ø, 1+, 2+and 3+) | Within one year | To estimate the concordance between historical scoring and reassess scoring in each IHC score category (IHC score Ø, 1+, 2+and 3+) in PART 2 |
| The concordance of HER2 expression between manual and AI assisted HER2 interpretation | Within one year | To estimate the concordance of HER2 expression between manual and AI assisted HER2 interpretation among 800 patients in PART 2 |
| The concordance of HER2 expression between leading site (FUSCC) and other centers | Within one year | To estimate the concordance of HER2 expression between leading site (FUSCC) and other centers among 270 patients in PART 2 |
| Tumor size of histopathological | Within one year | Tumor size of Histopathological characteristic by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| Positive lymph node number of the histopathological | Within one year | Positive lymph node number of histopathological characteristic by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| TNM stage by different HER2 expression levels | Within one year | TNM stage by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| Pathological type of histopathological | Within one year | Pathological type by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| Histological grade of histopathological | Within one year | Histological grade by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| Multi-focal of histopathological | Within one year | Multi-focal by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| ER percentage by different HER2 expression levels. | Within one year | ER percentage by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| PR status of histopathological | Within one year | PR status by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| PR percentage by different HER2 expression levels. | Within one year | PR(Progesterone Receptor) percentage by different HER2 expression level (Ø /Low/High) in PART 1 and PART 2 |
| Ki-67 percentage by different HER2 expression levels. | Within one year | Histopathological and clinicopathological characteristics by different HER2 expression level (Ø /Low/High) including: Ki-67 percentage,in PART 1 and PART 2 |
Other
| Measure | Time frame | Description |
|---|---|---|
| BMI of patients' demographic at baseline | At baseline | BMI of patients' demographic at baseline by different HER2 expression level in PART 1 |
| Menopause or not of patients' demographic at baseline | At baseline | Menopause or not of patients' demographic at baseline by different HER2 expression level in PART 1 |
| The baseline treatment patterns across patients with different HER2 expression levels | At baseline | Patients' treatment patterns at baseline, by different HER2 expression level in PART 1 |
| The prevalence of HER2 IHC0 and HER2 IHC >0<1+ | Within one year | To estimate the prevalence of HER2 IHC0 and HER2 IHC \>0\<1+ in PART 2 |
| Age at diagnosis of patients' demographic at baseline | At baseline | Age at diagnosis of patients' demographic at baseline by different HER2 expression level in PART 1 |
Countries
China
Outcome results
None listed