OFS in Premenopausal Node+ Breast Cancer With Low Genomic Risk

NCT ID: NCT05333328

Last Updated: 2025-05-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE4

Total Enrollment

418 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-02-06

Study Completion Date

2033-01-31

Brief Summary

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Among ER+HER2- premenopausal patients with N1 who undergoes primary breast surgery, we will identify the patients with a genomic low risk using the multigene-assay (OncoFREE®).

In these, ovarian function suppression with endocrine therapies including either tamoxifen or aromatase-inhibitors will be administered for 5 years.

Detailed Description

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* Among ER+HER2- premenopausal patients with N1 who undergoes primary breast surgery, we will identify the patients with a genomic low risk using the multigene-assay (OncoFREE®).
* In these, ovarian function suppression (OFS) with endocrine therapies including either tamoxifen or aromatase-inhibitors will be administered for 5 years.
* Either goserelin acetate or leuprorelin Acetate is allowed.
* These patients are able to choose bilateral salpingo-oophorectomy instead of OFS.
* Chemotherapy is omitted in these patients.

Conditions

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Breast Cancer Estrogen Receptor Positive Tumor HER2-negative Breast Cancer Premenopausal Breast Cancer Node-positive Breast Cancer

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

De-escalating treatment as ovarian-function suppression with endocrine treatments alone in ER+HER2- premenopausal women with N1
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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OFS with endocrine

Among ER+HER2- premenopausal patients with N1 who undergoes primary breast surgery, the patients with a genomic low risk using the multigene-assay (OncoFREE®) will be included in this arm.

Group Type EXPERIMENTAL

Ovarian function suppression with endocrine treatments

Intervention Type DRUG

* Ovarian function suppression (OFS) with endocrine therapies including either tamoxifen or aromatase-inhibitors will be administered for 5 years.
* Either goserelin acetate or leuprorelin Acetate is allowed.
* These patients are able to choose bilateral salpingo-oophorectomy instead of OFS.
* Chemotherapy is omitted in these patients.

Interventions

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Ovarian function suppression with endocrine treatments

* Ovarian function suppression (OFS) with endocrine therapies including either tamoxifen or aromatase-inhibitors will be administered for 5 years.
* Either goserelin acetate or leuprorelin Acetate is allowed.
* These patients are able to choose bilateral salpingo-oophorectomy instead of OFS.
* Chemotherapy is omitted in these patients.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* ER+HER2- breast cancer
* Premenopausal and age \<=50
* T1 or T2
* N1 including micrometastasis
* Genomic Low Risk by OncoFREE test® (1-20)

Exclusion Criteria

* Postmenopausal women
* ER-negative breast cancer
Minimum Eligible Age

20 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Seoul National University

OTHER

Sponsor Role collaborator

Gangnam Severance Hospital

OTHER

Sponsor Role lead

Responsible Party

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Sung Gwe Ahn

Associated Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Sung Gwe Ahn, M.D.,Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Gangnam Severance Hospital

Locations

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Gangnam Severance Hospital

Seoul, Korea, South Korea

Site Status RECRUITING

Seoul National University Hospital

Seoul, , South Korea

Site Status NOT_YET_RECRUITING

Countries

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South Korea

Central Contacts

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Sung Gwe Ahn, M.D.,Ph.D.

Role: CONTACT

0220193370

Facility Contacts

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Sung Gwe Ahn, MD, PhD

Role: primary

0220193370

Role: backup

Hyeoung Gon Moon

Role: primary

Other Identifiers

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2021-1151-002

Identifier Type: -

Identifier Source: org_study_id

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