Adjuvant Ribociclib With Endocrine Therapy in Hormone Receptor+/HER2- Intermediate Risk Early Breast Cancer (EarLEE-2)
A Phase III, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Evaluate Efficacy and Safety of Ribociclib With Endocrine Therapy as an Adjuvant Treatment in Patients With Hormone Receptor-positive, HER2-negative, Intermediate Risk Early Breast Cancer
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
Study Type
Study Type
Phase
Phase
- Phase 3
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Key Inclusion Criteria:
- Histologically confirmed unilateral primary invasive adenocarcinoma of the breast
- Estrogen receptor-positive and/or progesterone receptor-positive, HER2-negative breast cancer
- Patient is after surgical resection of the tumor where tumor was removed completely with surgical specimen microscopic margins free from tumor and with available archival tumor tissue from the surgical specimen
- Patient who have AJCC 8th edition Prognostic Stage Group II
- Patient has completed adjuvant radiotherapy (if indicated) according to the institutional guidelines prior to screening
- Patient may already have initiated adjuvant endocrine therapy (ET) at the time of randomization, but randomization must take place within 52 weeks of date of initial histological diagnosis of breast cancer and within 12 weeks of initiating ET
- ECOG Performance Status 0 or 1
- Adequate bone marrow and organ function
- Sodium, potassium, phosphorus, magnesium and total calcium laboratory values within normal limits
- QTcF interval < 450 msec and mean resting heart rate 50-90 bpm
Key Exclusion Criteria:
- Prior neoadjuvant therapy (endocrine therapy or chemotherapy) or CDK4/6 inhibitor
- Prior treatment with tamoxifen, raloxifen or aromatase inhibitors for reduction in risk (chemoprevention) of breast cancer and/or treatment for osteoporosis within last 2 years
- Patient with inflammatory breast cancer
- Prior treatment with anthracyclines at cumulative doses of 450 mg/m² or more for doxorubicin or 900 mg/m² or more for epirubicin
- Distant metastases of breast cancer beyond regional lymph nodes
- Patient has not recovered from clinical and laboratory acute toxicities of chemotherapy, radiotherapy and surgery
- Clinically significant, uncontrolled heart disease and/or cardiac repolarization abnormality, or clinically significant cardiac arrhythmias
- Uncontrolled hypertension with systolic blood pressure >160 mmHg
- Patient is currently receiving any of the prohibited substances that cannot be discontinued 7 days prior to Cycle 1 Day 1: concomitant medications, herbal supplements, and/or fruits and their juices that are known as strong inhibitors or inducers of CYP3A4/5; medications that have a narrow therapeutic window and are predominantly metabolized through CYP3A4/5; systemic corticosteroids ≤ 2 weeks prior to starting study drug, or who have not fully recovered from side effects of such treatment; concomitant medications with a known risk to prolong the QT interval and/or known to cause torsades de points that cannot be discontinued or replaced by safe alternative medication.
- Pregnant or breast-feeding (lactating) women or women who plan to become pregnant or breast-feed during the study
- Women of child-bearing potential unless they are using highly effective methods of contraception during the study treatment and for 21 days after stopping the study treatment.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Ribociclib + adjuvant endocrine therapy
Ribociclib in combination with standard adjuvant endocrine therapy
|
Ribociclib 600 mg daily on days 1 to 21 of a 28-day cycle for 26 cycles (approximately 24 months).
Ribociclib will be supplied in the form of 200 mg tablets.
Other Names:
Tamoxifen 20 mg daily, or letrozole 2.5 mg daily, or anastrozole 1 mg daily, or exemestane 25 mg daily (male patients will be treated with tamoxifen 20 mg daily) for a total duration of at least 60 months.
In premenopausal women, adjuvant endocrine therapy may include GnRH agonist administered every 28 days.
|
|
Active Comparator: Placebo + adjuvant endocrine therapy
Placebo in combination with standard adjuvant endocrine therapy
|
Tamoxifen 20 mg daily, or letrozole 2.5 mg daily, or anastrozole 1 mg daily, or exemestane 25 mg daily (male patients will be treated with tamoxifen 20 mg daily) for a total duration of at least 60 months.
In premenopausal women, adjuvant endocrine therapy may include GnRH agonist administered every 28 days.
Placebo 600 mg daily on days 1 to 21 of a 28-day cycle for 26 cycles (approximately 24 months).
Placebo will be supplied in the form of 200 mg tablets.
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Invasive disease-free survival (iDFS) using STEEP criteria
Time Frame: up to 90 months
|
iDFS is defined as the time from the date of randomization to the date of the first event of local invasive breast recurrence, regional invasive recurrence, distant recurrence, death, contralateral invasive breast cancer, or second primary non-breast invasive cancer, and is assessed locally by investigators.
|
up to 90 months
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Recurrence-free survival (RFS) using STEEP criteria
Time Frame: up to 90 months
|
RFS is defined as the time from date of randomization to date of first event of local invasive breast recurrence, regional invasive recurrence, distant recurrence, or death.
|
up to 90 months
|
|
Distant disease-free survival (DDFS) using STEEP criteria
Time Frame: up to 90 months
|
DDFS is defined as the time from date of randomization to date of first event of distant recurrence, death, or second primary non-breast invasive cancer
|
up to 90 months
|
|
Overall survival (OS)
Time Frame: up to 90 months
|
OS is defined as the time from date of randomization to date of death due to any cause.
|
up to 90 months
|
|
Quality of Life (QOL)
Time Frame: Baseline, 90 months
|
Change from baseline in the physical functioning sub-scale score and global health status/QOL scale score as assessed by EORTC QLQ-C30
|
Baseline, 90 months
|
Collaborators and Investigators
Sponsor
Sponsor
Publications and helpful links
General Publications
- Hudis CA, Barlow WE, Costantino JP, Gray RJ, Pritchard KI, Chapman JA, Sparano JA, Hunsberger S, Enos RA, Gelber RD, Zujewski JA. Proposal for standardized definitions for efficacy end points in adjuvant breast cancer trials: the STEEP system. J Clin Oncol. 2007 May 20;25(15):2127-32. doi: 10.1200/JCO.2006.10.3523.
- Hortobagyi GN, Connolly JL, D'Orsi CJ, et al (2017). Breast. From AJCC Cancer Staging Manual 8th ed. By Amin MB, Edge S, Greene FL, et al. Springer
Study record dates
Study Major Dates
Study Start (Anticipated)
Study Start
Primary Completion (Anticipated)
Primary Completion
Study Completion (Anticipated)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Actual)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- CLEE011H2301
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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