Study of Efficacy and Safety in Premenopausal Women With Hormone Receptor Positive, HER2-negative Advanced Breast Cancer (MONALEESA-7)
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ClinicalTrials.gov Identifier: NCT02278120 |
Recruitment Status :
Active, not recruiting
First Posted : October 29, 2014
Results First Posted : February 26, 2019
Last Update Posted : January 31, 2023
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This is a multi-center, randomized, double-blinded, placebo controlled trial in pre-menopausal women with advanced breast cancer.
The purpose of this study is to assess the efficacy of Ribociclib (LEE011), as measured by progression free survival (PFS), in premenopausal women with HR positive, HER2 negative advanced breast cancer
Condition or disease | Intervention/treatment | Phase |
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Advanced Metastatic Breast Cancer | Drug: LEE011 Drug: Tamoxifen Drug: Letrozole Drug: Anastrozole Drug: Goserelin Drug: LEE011 Placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 672 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Phase III Randomized, Double-blind, Placebo-controlled Study of LEE011 or Placebo in Combination With Tamoxifen and Goserelin or a Non-steroidal Aromatase Inhibitor (NSAI) and Goserelin for the Treatment of Premenopausal Women With Hormone Receptor Positive, HER2-negative, Advanced Breast Cancer |
Actual Study Start Date : | November 20, 2014 |
Actual Primary Completion Date : | August 21, 2017 |
Estimated Study Completion Date : | March 27, 2023 |

Arm | Intervention/treatment |
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Experimental: Ribociclib (LEE011) + NSAI/tamoxifen + goserelin
LEE011 600 mg daily oral (3 weeks on/ 1 week off) in combination with NSAI or tamoxifen (tamoxifen 20 mg daily oral or letrozole 2.5 mg daily oral or anastrozole 1 mg daily oral) and goserelin 3.6 mg subcutaneous injection (once every 28 days)
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Drug: LEE011
LEE011 600 mg daily oral Drug: Tamoxifen tamoxifen 20 mg daily oral Drug: Letrozole letrozole 2.5 mg daily oral Drug: Anastrozole anastrozole 1 mg daily oral Drug: Goserelin Goserelin 3.6 mg subcutaneous injection |
Placebo Comparator: LEE011 placebo+NSAI/tamoxifen+goserelin
LEE011 Placebo 600 mg daily oral (3 weeks on/ 1 week off) in combination with NSAI or tamoxifen (tamoxifen 20 mg daily oral or letrozole 2.5 mg daily oral or anastrozole 1 mg daily oral) and goserelin 3.6 mg subcutaneous injection (once every 28 days)
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Drug: Tamoxifen
tamoxifen 20 mg daily oral Drug: Letrozole letrozole 2.5 mg daily oral Drug: Anastrozole anastrozole 1 mg daily oral Drug: Goserelin Goserelin 3.6 mg subcutaneous injection Drug: LEE011 Placebo LEE011 placebo 600 mg daily oral |
- Progression Free Survival (PFS) Per Investigator's Assessment [ Time Frame: Up to approximatley 25 months ]PFS, defined as the time from the date of randomization to the date of the first documented progression or death due to any cause and assessed according to Response Evaluation Criteria In Solid Tumors (RECIST) v1.1]. PFS was assessed via a local radiology assessment according to RECIST 1.1
- Overall Survival (OS) [ Time Frame: Up to approximately 69 months ]Time from date of randomization to the date of death from any cause
- Overall Response Rate (ORR) Per Local Assessment [ Time Frame: Up to approximately 25 months ]ORR is the percentage of participants with the best overall response of complete response (CR) or partial response (PR) according to RECIST 1.1. CR = Disappearance of all non-nodal target lesions. In addition, any pathological lymph nodes assigned as target lesions must have a reduction in short axis to < 10 mm; PR = At least a 30% decrease in the sum of diameter of all target lesions, taking as reference the baseline sum of diameters.
- Clinical Benefit Rate (CBR) [ Time Frame: Up to approximately 25 months ]Percentage of participants with complete response (CR) or partial response (PR) or stable disease (SD) lasting 24 weeks or longer as defined in RECIST 1.1.CR = Disappearance of all non-nodal target lesions. In addition, any pathological lymph nodes assigned as target lesions must have a reduction in short axis to < 10 mm; PR = At least a 30% decrease in the sum of diameter of all target lesions, taking as reference the baseline sum of diameters; SD = Neither sufficient shrinkage to qualify for PR or CR nor an increase in lesions which would qualify for progressive disease: PD = At least a 20% increase in the sum of diameter of all measured target lesions, taking as reference the smallest sum of diameter of all target lesions recorded at or after baseline. In addition to the relative increase of 20% the sum must also demonstrate an absolute increase of at least 5 mm.
- Safety and Tolerability of LEE011 [ Time Frame: Up to approximately 26 months ]Safety and tolerability will be determined by type, frequency and severity of adverse events and laboratory abnormalities per Common Terminology Criteria for Adverse Events (CTCAE) version 4.03
- Time to Response (TTR) Per Local Investigator's Assessment [ Time Frame: Up to approximately 25 months ]Time to response is the time from the date of randomization to the first documented response (CR or PR, which must be confirmed subsequently) according to RECIST 1.1. All patients will be included in time to response calculations. Patients who do not achieve a confirmed response will be censored at the maximum follow-up time (i.e. first patient first visit to last patient last visit used for the analysis) for patients who had a PFS event (i.e. either progressed or died due to any cause) or at the date of last adequate tumor assessment otherwise.
- Duration of Response (DOR) Per Investigator's Assessment - Patients With Confirmed Complete Response (CR) or Partial Response (PR) [ Time Frame: Up to approximately 25 months ]Time from the first documented response (CR or PR) to the first documented progression or death due to underlying cancer
- Time to Definitive Deterioration of the ECOG PS From Baseline [ Time Frame: Baseline, up to approximately 25 months ]Time to deterioration of Eastern Cooperative Oncology Group (ECOG) Performance Status (PS)
- Time to 10% Deterioration in the Global Health Status/QOL Scale Score of the EORTC QLQ-C30 [ Time Frame: Up to approximately 25 months ]Patient reported outcomes for health related quality of life
- Change From Baseline in the Global Health Status/QOL Scale Score of the EORTC QLQ-C30 [ Time Frame: Up to approximately 25 months ]Patient reported outcomes for health related quality of life

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Ages Eligible for Study: | 18 Years to 59 Years (Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Patient has advanced (locoregionally recurrent or metastatic) breast cancer not amenable to curative therapy
- Patient is premenopausal or perimenopausal at the time of study entry
- Patients who received (neo) adjuvant therapy for breast cancer are eligible
- Patient has a histologically and/or cytologically confirmed diagnosis of estrogen-receptor positive and/or progesterone receptor positive breast cancer
- Patient has HER2-negative breast cancer
- Patient must have either measurable disease or If no measurable disease is present, then at least one predominantly lytic bone lesion
- Patient has an Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
- Patient has adequate bone marrow and organ function
Exclusion Criteria:
- Patient who has received a prior CDK4/6 inhibitor
- Patient is postmenopausal
- Patients who currently have inflammatory breast cancer at screening.
- Patients who received any prior hormonal anti-cancer therapy for advanced breast cancer, except for ≤ 14 days of tamoxifen or NSAI ± goserelin for advanced breast cancer prior to randomization.
- Patient has a concurrent malignancy or malignancy within 3 years of randomization, with the exception of adequately treated basal cell skin carcinoma, squamous cell skin carcinoma, non-melanomatous skin cancer or curatively resected cervical cancer.
- Patient with CNS metastases.
- Patient has active cardiac disease or a history of cardiac dysfunction
- Patient is currently using other antineoplastic agents
- Patient is pregnant or nursing or physiologically capable of becoming pregnant and not using highly effective contraception
Other protocol-defined Inclusion/Exclusion may apply.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02278120

Study Director: | Novartis Pharmaceuticals | Novartis Pharmaceuticals |
Documents provided by Novartis ( Novartis Pharmaceuticals ):
Responsible Party: | Novartis Pharmaceuticals |
ClinicalTrials.gov Identifier: | NCT02278120 |
Other Study ID Numbers: |
CLEE011E2301 2014-001931-36 ( EudraCT Number ) |
First Posted: | October 29, 2014 Key Record Dates |
Results First Posted: | February 26, 2019 |
Last Update Posted: | January 31, 2023 |
Last Verified: | January 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Plan Description: | Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
LEE011 ribociclib HR-positive HER2-negative Advanced breast cancer Letrozole Anastrozole Tamoxifen Goserelin |
CDK CDK4 CDK6 CDK4/6 Phase III ER-positive PR-positive Premenopausal |
Breast Neoplasms Neoplasms by Site Neoplasms Breast Diseases Skin Diseases Tamoxifen Letrozole Anastrozole Goserelin Antineoplastic Agents Aromatase Inhibitors |
Steroid Synthesis Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Estrogen Antagonists Hormone Antagonists Hormones, Hormone Substitutes, and Hormone Antagonists Physiological Effects of Drugs Antineoplastic Agents, Hormonal Selective Estrogen Receptor Modulators Estrogen Receptor Modulators Bone Density Conservation Agents |