| Unique ID issued by UMIN | UMIN000055219 |
|---|---|
| Receipt number | R000063061 |
| Scientific Title | Cross-sectional study to assess the penetration of gBRCA1/2 genetic testing within HER2-negative recurrent high-risk early-breast cancer patients (BRCAwareness) |
| Date of disclosure of the study information | 2024/08/11 |
| Last modified on | 2024/11/02 09:55:22 |
Cross-sectional study to assess the penetration of gBRCA1/2 genetic testing within HER2-negative recurrent high-risk early-breast cancer patients (BRCAwareness)
Cross-sectional study on BRCA testing in recurrent high-risk EBC
Cross-sectional study to assess the penetration of gBRCA1/2 genetic testing within HER2-negative recurrent high-risk early-breast cancer patients (BRCAwareness)
Cross-sectional study on BRCA testing in recurrent high-risk EBC
| Japan |
Recurrent high-risk HER2-negative early-breast cancer
| Hematology and clinical oncology | Breast surgery | Adult |
Malignancy
NO
Adjuvant olaparib in patients with recurrent high-risk HER2-negative early-breast cancer who have gBRCA1/2 pathogenic variant (gBRCA positive) has been reported to improve prognosis and was covered by national insurance in Japan in August 2022. However, olaparib cannot be used without companion diagnostic gBRCA1/2 genetic testing. The exact proportion of gBRCA1/2 genetic testing in patients with recurrent high-risk HER2-negative early breast cancer is not known. The identification of eligible patients is important because it can improve prognosis.
Others
To determine the proportion of gBRCA1/2 genetic testing performed in recurrent high-risk HER2-negative early-breast cancer patients who are candidate to olaparib
To explore factors associated with not taking gBRCA1/2 genetic testing
Exploratory
Explanatory
Not applicable
Proportion of gBRCA1/2 genetic testing performed
Factors associated with not taking gBRCA1/2 genetic testing
Proportion of patients with gBRCA1/2 pathogenic variants among those who underwent gBRCA1/2 genetic testing
Proportion of patients initiated on olaparib among gBRCA1/2 pathogenic variant holders
Drug therapy used other than olaparib in gBRCA1/2 pathogenic variant carriers
Observational
| 18 | years-old | <= |
| 100 | years-old | >= |
Male and Female
All of the following criteria must be met as primary enrollment.
1.Newly diagnosed invasive breast cancer
2.No distant metastasis from the time of diagnosis to surgery
3.18 years or older at the time of diagnosis
4.HER2 negative (Definition of HER2 negative: 0 or 1+ by immunohistochemistry (IHC), or HER2/CEP17 ratio <2.0 and HER2 copy number <6.0 by fluorescence in situ hybridization (FISH))
5.Underwent radical surgery (mastectomy or partial mastectomy) for breast cancer between January 1, 2023 and December 31, 2023
6.Estrogen receptor (ER)-positive (ER-positive cells account for >=1% by IHC)
6-1.Four lymph node metastases (>=pN2) after prior surgery
6-2.Non-pCR (with residual invasive cancer cells) after preoperative chemotherapy
7.ER-negative (ER-positive cells account for <1% by IHC)
7-1.Invasive tumor >2 cm in diameter (>=pT2) or one lymph node metastasis (>=pN1) after prior surgery
7-2.Non-pCR (with residual invasive cancer cells) after preoperative chemotherapy
To proceed to secondary enrollment, patients must have a CPS+EG score of at least 3 points if they meet the following criteria
6.ER-positive and 2.non-pCR after preoperative chemotherapy
Cases deemed ineligible by the attending physician
700
| 1st name | Tomoe |
| Middle name | |
| Last name | Taji |
Hyogo Prefectural Amagasaki General Medical Center
Department of Breast Surgery
660-8550
2-17-77 Higashinaniwa-cyo, Amagasaki, Hyogo, JAPAN
0664807000
tajit@hp.pref.hyogo.jp
| 1st name | Tomoe |
| Middle name | |
| Last name | Taji |
Hyogo Prefectural Amagasaki General Medical Center
Department of Breast Surgery
660-8550
2-17-77 Higashinaniwa-cyo, Amagasaki, Hyogo, JAPAN
06-6480-7000
tajit@hp.pref.hyogo.jp
Hyogo Prefectural Amagasaki General Medical Center
AstraZeneca
Profit organization
Kansai Medical University Hospital
2-3-1, Shinmachi, Hirakata, Osaka, JAPAN
072-804-0101
tajit@hp.pref.hyogo.jp
NO
| 2024 | Year | 08 | Month | 11 | Day |
Unpublished
Open public recruiting
| 2024 | Year | 08 | Month | 05 | Day |
| 2024 | Year | 10 | Month | 21 | Day |
| 2024 | Year | 11 | Month | 02 | Day |
| 2025 | Year | 07 | Month | 31 | Day |
| 2025 | Year | 07 | Month | 31 | Day |
| 2025 | Year | 12 | Month | 31 | Day |
| 2026 | Year | 06 | Month | 30 | Day |
(1) Primary registration
The following items (patient information) will be entered into the EDC (electronic data capture) from the electronic medical record for patients with recurrent high-risk HER2-negative early-breast cancer who underwent surgery between January 1, 2023 and December 31, 2023.
1.Age
2.Gender
3.Treatment strategy (prior surgery or preoperative chemotherapy)
4.Information on clinical stage (cTNM classification)
5.Information on histopathology diagnosis (ER, PgR, HER2, pTNM classification, nuclear or histological grade)
6.Date of surgery
The following items (facility information) will be collected from registered facilities.
7.Number of certified genetic counselors (full-time and part-time)
8.Number of clinical geneticists
9.Number of breast specialists
10.Number of certified breast cancer nurses
11.Description on gBRCA1/2 genetic test
12.Perioperative conferences held or not
13.Number of breast cancer surgeries per year
14.The level of accreditation of JOHBOC
(2) Secondary registration
1.Menopausal status, pregnancy, and childbearing status for women
2.Family history of cancer (breast, ovarian, pancreatic)
3.Past medical history and comorbidities
4.Information on Surgery
5.Information on drug therapy
6.Information on gBRCA1/2 genetic testing (whether test was taken, and the results of those who took the test)
7.Description of gBRCA1/2 genetic testing
The above information will be used to determine the proportion of gBRCA1/2 genetic testing among patients with recurrent high-risk HER2-negative early breast cancer. In addition, we will identify factors associated with not undergoing gBRCA1/2 genetic testing. We will also examine postoperative drug therapy among gBRCA1/2 pathogenic variant carriers.
| 2024 | Year | 08 | Month | 11 | Day |
| 2024 | Year | 11 | Month | 02 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000063061