Unique ID issued by UMIN | UMIN000050208 |
---|---|
Receipt number | R000057177 |
Scientific Title | A prospective study to examine the expression status of circulating tumor DNA in patients with high-risk early breast cancer and its association with metastasis and recurrence |
Date of disclosure of the study information | 2023/02/13 |
Last modified on | 2023/02/13 17:26:43 |
A prospective study to examine the expression status of circulating tumor DNA in patients with high-risk early breast cancer and its association with metastasis and recurrence
Breast cancer ctDNA Landmark study
A prospective study to examine the expression status of circulating tumor DNA in patients with high-risk early breast cancer and its association with metastasis and recurrence
Breast cancer ctDNA Landmark study
Japan |
Breast Cancer
Breast surgery |
Malignancy
YES
To investigate the correlation between MRD detection frequency and recurrence by ctDNA analysis (Guardant Revea) in patients with high-risk recurrent breast cancer after completion of perioperative treatment
Efficacy
Exploratory
Not applicable
ctDNA positive rate at 1-6 months after completion of definitive treatment
Observational
20 | years-old | <= |
Not applicable |
Male and Female
1. Age at the time of obtaining written consent is 20 years or older
2. Histologically diagnosed invasive breast cancer
3. Stage I-III without distant metastasis, see below for eligibility criteria for each subtype
4. Planned, undergoing, or after surgery and standard definitive treatment
Standard curative treatments include radiotherapy, chemotherapy, anti-HER2 therapy, immune checkpoint inhibitors, PARP inhibitors, CDK4/6 inhibitors, etc. Endocrine therapy is not considered. Treatment selection is based on the judgment of the attending physician in accordance with various guidelines. Patients with a high risk of recurrence who cannot be treated with standard systemic drug therapy for any reason, such as age or pre-existing conditions, are eligible if surgery has been performed.
5. Satisfy any definition of high risk of recurrence by subtype below
i. ER positive/HER2 negative
a. 4 or more lymph node metastases
b. 1-3 lymph node metastases with either tumor diameter >=5 cm or histological grade >=3 or Ki-67 >=20%
c. Remaining invasive cancer in the breast or axillary lymph nodes at the time of surgery if preoperative chemotherapy was performed
d. Diagnosed as high risk of recurrence by polygene assay
ii. HER2 positive
a. Lymph node metastasis positive
b. Tumor diameter >=2 cm
c. Remaining invasive cancer in the breast or axillary lymph nodes after preoperative chemotherapy
iii. ER/PgR/HER2 negative
a. Lymph node metastasis positive
b. Tumor diameter >=2 cm
c. Remaining invasive cancer in the breast or axillary lymph nodes after preoperative chemotherapy
1 More than 6 months have passed since the completion of radical treatment
2 Having multiple cancers (excludes carcinoma in situ of the skin other than malignant melanoma)
3. Pregnancy, history of organ transplantation, or other conditions that affect ctDNA analysis
200
1st name | Masakazu |
Middle name | |
Last name | Toi |
Graduate School of Medicine, Kyoto University
Department of Breast Surgery
6068507
54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, Japan
075-751-3660
toi@kuhp.kyoto-u.ac.jp
1st name | Masahiro |
Middle name | |
Last name | Takada |
Graduate School of Medicine, Kyoto University
Department of Breast Surgery
6068507
54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, Japan
075-751-3660
masahiro@kuhp.kyoto-u.ac.jp
Kyoto University
Guardant Health
Profit organization
Kyoto University Graduate School and Faculty of Medicine, Ethics Committee
Konoe-cho, Yoshida, Sakyo-ku, Kyoto, Japan
075-753-4680
ethcom@kuhp.kyoto-u.ac.jp
NO
2023 | Year | 02 | Month | 13 | Day |
Unpublished
Preinitiation
2022 | Year | 12 | Month | 08 | Day |
2023 | Year | 01 | Month | 17 | Day |
2023 | Year | 02 | Month | 20 | Day |
2026 | Year | 02 | Month | 19 | Day |
none
2023 | Year | 02 | Month | 01 | Day |
2023 | Year | 02 | Month | 13 | Day |
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000057177