Local Treatment in ER-positive/HER2-negative Oligo-metastatic Breast Cancer (CLEAR)
Local Treatment in Addition to Endocrine Therapy in ER-positive/HER2-negative Oligo-metastatic Breast Cancer (CLEAR): a Multicentre, Single -Arm, Phase 2 Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Local treatment included surgical resection, stereotactic body radiotherapy, palliative radiotherapy, and radiofrequency ablation. Stereotactic body radiotherapy is preferred as a radiation modality.
Endocrine therapies with/without target therapy including CDK4/6 inhibitors or mTOR inhibitors are the mainstay of 1st line treatment for ER-positive/HER2-negative metastatic breast cancer.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Sung Gwe Ahn, Ph.D.
- Phone Number: 82-2-2019-4402
- Email: asg2004@yuhs.ac
Study Contact Backup
- Name: Joon Jeong, Ph.D.
- Phone Number: 82-2-2019-3379
- Email: gsjjoon@yuhs.ac
Study Locations
-
-
-
Seoul, Korea, Republic of, 135720
- Recruiting
- Gangnam Severance Hospital
-
Contact:
- Joon Jeong, M.D.,Ph.D.
- Phone Number: 82220193370
- Email: gsjjoon@yuhs.ac
-
Contact:
- Sung Gwe Ahn, M.D.
- Phone Number: 82220193370
- Email: asg2004@yuhs.ac
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
-ER-positive/HER2-negative in primary tumor
- Oligometastases: ≤ 2 lesions in single organ or site (lung, bone, liver, adrenal glands, distant LNs)
- Recurrent cancer after completion of primary treatment (RFI≥1year)
- Metastatic lesions are feasible for resection or radiotherapy (Size≤3cm)
Exclusion Criteria:
- De Novo metastatic cancer at initial diganosis
- Recurrence-free inverval < 1 year
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Experimental: Endocrine and local treatments
Endocrine therapy is a standard-of-care for 1st line treatment in the patients with ER+/HER2- metastatic breast cancer. Endocrine options included aromatase inhibitors, aromatase inhibitors with CDK4/6 inhibitors, fulvestrant, fulvestrant with CDK4/6 inhibitors, everolimus with exemestane, tamoxifen. For premenopausal women, agents for ovarian function suppression using GnRH agonists or surgical ovarian ablation including bilateral salpingo-oophorectomy are allowed. Local treatments for metastatic lesions will be added in this group. Local treatments include modalities described below: i) Surgical resection: the achievement of tumor-free margin is not obligatory. ii) Stereotactic body radiotherapy iii) Radiofrequency ablation |
Surgical resection for their metastatic lesions will be performed.
Achievement of tumor-free margin is not mandatory.
Deliver appropriate metastasis directed radiotherapy while minimizing exposure of surrounding normal tissues.
Total radiation dose and fractions are various according to metastatic lesions (57~97.5Gy/6~10
Fraction).
Other Names:
RFA is a localized thermal treatment technique designed to induce tumor destruction by heating the tumor tissue to temperatures that exceed 60℃.
The alternating current of radiofrequency waves passing down from an uninsulated electrode tip into the surrounding tissues generates changes in the direction of ions and creates ionic agitation and frictional heating.
This tissue heating then drives extracellular and intracellular water out of the tissue, resulting in tissue destruction by coagulative necrosis.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Progression-free survival
Time Frame: From the date of registration to the date of first PFS failure or last follow-up; assessed up to 6 years; Median PFS of all registered patients will be over 30 months
|
Failure: progression or death due to any cause
|
From the date of registration to the date of first PFS failure or last follow-up; assessed up to 6 years; Median PFS of all registered patients will be over 30 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Overall survival
Time Frame: From the date of registration to the date of death or last follow-up; assessed up to 10 years
|
Failure: death due to any cause
|
From the date of registration to the date of death or last follow-up; assessed up to 10 years
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Joon Jeong, Ph.D., Gangnam Severance Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CLEAR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.