A Phase III Adjuvant Trial Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression plus Endocrine Therapy in Premenopausal Patients with pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score ≤ 25 (OFSET)
T
Tarah Ballinger, MD
Primary Investigator
Enrolling By Invitation
18-60 years
Female
Phase
3
16 participants needed
4 Locations
Brief description of study
What is this study about?
This study will determine whether adjuvant chemotherapy (ACT) added to ovarian function suppression (OFS) plus endocrine therapy (ET) is superior to OFS plus ET in improving invasive breast cancer-free survival (IBCFS) among premenopausal, early- stage breast cancer (EBC) patients with estrogen receptor (ER)-positive, HER2-negative tumors and 21-gene recurrence score (RS) between 16-25 (for pN0 patients) and 0-25 (for pN1 patients).
THIS STUDY IS ENROLLING BY INVITATION ONLY - Consistent with most oncology trials, patients are not actively “recruited,” but are screened by their physician for appropriate clinical trial(s) at the time of their routine clinic visit. Occasionally, a patient may be a self-referral or physician referral, but are still screened for appropriate clinical trials at the time of their routine clinic visit. PI and staff may send copies of relevant consent forms to these patients to look over prior to actually consenting or enrolling them. This may take place at the patient's visit at which the consent is presented or the patient's next visit to the outpatient hematology/oncology clinic.
Interested in participating? For more information about this research study or other cancer-related clinical trials at IU Simon Comprehensive Cancer Center, please contact:
IU Clinical Trials Office
Email: iutrials@iu.edu
Phone: (317) 278-5632
Detailed description of study
What will happen during the study?
Aromatase inhibitor co-administered with a GnRH agonist for 5 years. The choice of AI is per investigator discretion. The choice of GnRH agonist and dosing schedule is per investigator's discretion. Options commonly include goserelin, leuprolide, or triptorelin given monthly or every-three-months. The dose and schedule of AI should be consistent with the drug package insert. Endocrine treatment beyond 5 years is at the investigator's discretion. Bilateral oophorectomy may substitute for ovarian suppression if desired
Eligibility of study
You may be eligible for this study if you meet the following criteria:
- Conditions: Breast Cancer
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Age: Between 18 Years - 60 Years
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Gender: Female
- Inclusion Criteria: A patient cannot be considered eligible for this study unless ALL of the following conditions are met.
- Thegally authorized representative must provide study-specific informed consent prior to pre-entry and, for patients treated in the U.S., authorization permitting release of personal health.
- Female patients must be greater than or equal to 18 years of age.
- Patients must be premenopausal (evidence of functioning ovaries) at the time of pre-entry. For study purposes, premenopausal is defined as:
- Age 50 years or under with spontaneous menses within 12 months; or
- Age greater than 50-60 years with spontaneous menses within 12 months plus follicle-stimulating hormone (FSH) and estradiol levels in the premenopausal range; or
- Patients with amenorrhea due to IUD or prior uterine ablation must have FSH and estradiol levels in the premenopausal range; or
- Patients with prior hysterectomy must have FSH and estradiol levels in the premenopausal range.
- The patient must have an ECOG performance status of less than or equal to 2 (or Karnofsky greater than or equal to 60%).
- Patientsy have ipsilateral or contralateral synchronous breast cancer if the highest stage tumor meets entry criteria, and the other sites of disease would not require chemotherapy or HER2-directed therapy.
- Patientsy have multicentric or multifocal breast cancer if the highest stage tumor meets entry criteria, and the other sites of disease would not require chemotherapy or HER2-directed therapy.
- Patient may have undergone a total mastectomy, skin-sparing mastectomy, nipple-sparing mastectomy, or a lumpectomy.
- Forwho undergo a lumpectomy, the margins of the resected specimenust be histologically free of invasive tumor and DCIS (ductal carcinoma in situ) with no ink on tumor as determined by the local pathologist. If pathologic examination demonstrates tumor at the line of resection, additional excisions may be performed to obtain clear margins. Positive posterior margin is allowed if surgeon deems no further resection possible. (Patients with margins positive for LCIS (lobular carcinoma in situ) aregible without additional resection.)
- For patients who undergo mastectomy, the margins must be free of residual gross tumor. (Patients with microscopic positive margins are eligible if post-mastectomy RT (radiation therapy) of the chest wall will be administered.)
- Patient must have undergone axillary staging withde biopsy (SNB), targeted axillary dissection (TAD), or axillary lymph node dissection (ALND).
- The following staging criteria must be met postoperatively according to AJCC 8th edition criteria:
- By pathologic evaluation, primary tumor must be pT1-3. (If N0, must be T1c or higher.)
- By pathologic evaluation, ipsilateral nodes must be pN0 or pN1 (pN1mi, pN1a, pN1b, pN1c).
- Patients with positive isolated tumor cells (ITCs) in axillary nodes will be considered N0 for eligibility purposes.
- Patients with micrometastatic nodal involvement (0.2-2 mm) will be considered N1.
- Oncotype DX RS (recurrence score) requirements*:
- If node-negative:
- Oncotype DX RS must be RS 21-25, or
- Oncotype DX RS must be 16-20 and disease must be high clinical risk, defined as:w histologic grade with primary tumor size greater than 3 cm, intermediate histologic grade with primary tumor size greater than 2 cm,high histologic grade with primary tumor size greater than 1 cm.
- If 1-3 nodes involved:
- Oncotype DX RS must be less than 26.* Patients with a "Low Risk" or "MP1" MammaPrint (a genomic test that analyzes the activity of certain genes in early-stage breast cancer) result must have eligibility assessed with an Oncotype DX RS at pre-entry (see Section 3.1). Blocks or unstained slides must be sent to the Genomic Health centralized laboratory for testing at no cost to these patients. If MammaPrint High Risk or MP2, these patients are not eligible.
- The tumor must be ER and/or PgR-positive (progesterone receptor) by current ASCO/CAP guidelines based on local testing results. Patients with greater than or equal to 1% ER and/or PgR staining by IHC will be classified as positive.
- Theumor must be HER2-negative by current ASCO/CAP (American Society of Clinical Oncology/College of American Pathologists) guidelines based on local testing results.
- The interval between the last surgery for breast cancer (including re-excision of margins) and pre-entry must be no more than 16 weeks.
- Short course of endocrine therapy of lesshan 6 weeks duration before pre-entry is acceptable either as neoadjuvant or adjuvant therapy. An Oncotype DX RS must be performed on core biopsy specimen obtained prior to initiation of neoadjuvant endocrine therapy if received.
- Patients with a prior or concurrent non-breast malignancy whose natural history or treatment does not have the potential to interfere with the safety ory assessment of the investigational regimen are eligible for this trial. This would include prior cancers treated with curative intent.
- HIV-infectedve anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
- Radiation therapy should be used according to standard guidelines; the intended radiation therapy should be declared prior to pre-entry.
Updated on
01 Aug 2024.
Study ID: CTO-NRG-BR009
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