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A Study of Abemaciclib Combined With Fulvestrant in Women With Hormone Receptor Positive HER2 Negative Breast Cancer

A Randomized, Double-Blind, Placebo-Controlled, Phase 3 Study of Fulvestrant with or without Abemaciclib, a CDK4/6 Inhibitor, for Women with Hormone Receptor Positive, HER2 Negative Locally Advanced or Metastatic Breast Cancer - MONARCH 2

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2013-004728-13-BE
Enrollment
710
Registered
2014-05-21
Start date
2014-08-11
Completion date
Unknown
Last updated
2024-08-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast cancer MedDRA version: 20.0 Level: PT Classification code 10006187 Term: Breast cancer System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps)

Interventions

Product Name: Abemaciclib Product Code: LY2835219 Pharmaceutical Form: Capsule INN or Proposed INN: Abemaciclib CAS Number: 1231929-97-7 Other descriptive name: LY2835219 Concentration unit: mg millig

Sponsors

Eli Lilly and Company
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: •Have a diagnosis of HR+, HER2- breast cancer •Have locally advanced disease not amenable to curative treatment by surgery or metastatic disease. In addition, participants must fulfill 1 of the following criteria: - relapsed with radiologic evidence of progression while receiving neoadjuvant or adjuvant endocrine therapy, with no subsequent endocrine therapy received following progression - relapsed with radiologic evidence of progression within 1 year from completion of adjuvant endocrine therapy, with no subsequent endocrine therapy received following progression - relapsed with radiologic evidence of progression more than 1 year from completion of adjuvant endocrine therapy and then subsequently relapsed with radiologic evidence of progression after receiving treatment with either an antiestrogen or an aromatase inhibitor as first-line endocrine therapy for metastatic disease. Patients may not have received more than 1 line of endocrine therapy or any prior chemotherapy for metastatic disease - presented de novo with metastatic disease and then relapsed with radiologic evidence of progression after receiving treatment with either an antiestrogen or an aromatase inhibitor as first-line endocrine therapy for metastatic disease. Patients may not have received more than 1 line of endocrine therapy or any prior chemotherapy for metastatic disease •Have postmenopausal status due to either surgical/natural menopause or ovarian suppression (initiated at least 28 days prior to Day 1 of Cycle 1) with a gonadotropin-releasing hormone (GnRH) agonist such as goserelin •Have a negative serum pregnancy test at baseline (within 14 days prior to randomization) and agree to use medically approved precautions to prevent pregnancy during the study and for 12 weeks following the last dose of abemaciclib if postmenopausal status is due to ovarian suppression with a GnRH agonist •Have either measurable disease or nonmeasurable bone only disease •Have a performance status =1 on the ECOG scale •Have discontinued previous therapies for cancer (including specifically, aromatase inhibitors, anti-estrogens, chemotherapy, radiotherapy, and immunotherapy) for at least 21 days for myelosuppressive agents or 14 days for nonmyelosuppressive agents prior to receiving study drug, and recovered from the acute effects of therapy (until the toxicity resolves to either baseline or at least Grade 1) except for residual alopecia or peripheral neuropathy Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 426 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 284

Exclusion criteria

Exclusion criteria: • Are currently receiving an investigational drug in a clinical trial or participating in any other type of medical research judged not to be scientifically or medically compatible with this study • Have visceral crisis, lymphangitic spread, or leptomeningeal carcinomatosis visceral crisis is not the mere presence of visceral metastases but implies severe organ dysfunction as assessed by symptoms and signs, laboratory studies, and rapid progression of the disease • Have clinical evidence or history of central nervous system metastasis • Have received prior treatment with chemotherapy (except for neoadjuvant/ adjuvant chemotherapy), fulvestrant, everolimus, or any CDK4/6 inhibitor • Have received treatment with a drug that has not received regulatory approval for any indication within 14 or 21 days prior to randomization of study drug for a nonmyelosuppressive or myelosuppressive agent, respectively • Have received recent (within 28 days prior to randomization) yellow fever vaccination • Have had major surgery within 14 days prior to randomization of study drug to allow for post-operative healing of the surgical wound and site(s) • Have a personal history within the last 12 months of any of the following conditions: syncope of cardiovascular etiology, ventricular tachycardia, ventricular fibrillation, or sudden cardiac arrest • Have inflammatory breast cancer or a history of any other cancer (except nonmelanoma skin cancer or carcinoma in-situ of the cervix), unless in complete remission with no therapy for a minimum of 3 years • Have received an autologous or allogeneic stem-cell transplant • Have active bacterial or fungal infection, or detectable viral infection • Have initiated bisphosphonates or approved RANK ligand (RANK-L) targeted agents (for example, denosumab) <7 days prior to randomization

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of Study JPBL is to compare abemaciclib plus fulvestrant versus placebo plus fulvestrant with respect to PFS for women with HR+, HER2- locally advanced or metastatic breast cancer.;Secondary Objective: The secondary objectives of the study are to compare abemaciclib plus fulvestrant versus placebo plus fulvestrant with respect to each of the following: •overall survival (OS) •OS rate at 1, 2, and 3 years •objective response rate •duration of response •disease control rate •clinical benefit rate •safety and tolerability •pain and symptom burden using the Brief Pain Inventory (BPI), the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30) and the EORTC QLQ-BR23 (breast) questionnaires, and health status scores from the EuroQol 5-Dimension 5 Level (EQ-5D 5L) •pharmacokinetics (PK) of abemaciclib, its metabolites, and fulvestrant;Primary end point(s): Progression-Free Survival (PFS) ;Timepoint(s) of evaluation of this end point: Baseline up to Approximately 31 Months

Secondary

MeasureTime frame
Secondary end point(s): - Overall Survival (OS) - Objective Response Rate - Duration of Response (DoR) - Disease Control Rate (DCR) - Clinical Benefit Rate (CBR) - Pharmacokinetics (PK): Area Under the Concentration Curve (AUC) of LY2835219, Its Metabolites, and Fulvestrant - Change from Baseline in Health Status Using the EuroQol 5-Dimension 5 Level (EQ-5D 5L) - Change from Baseline in Quality of Life Using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30) - Change from Baseline in Quality of Life using the EORTC QLQ-BR23 (breast) Questionnaire - Change from Baseline in Pain and Symptom Burden Assessment Using the Brief Pain Inventory (BPI);Timepoint(s) of evaluation of this end point: -Baseline up to Approximately 80 Months for OS. -Baseline up to Approximately 31 Months for ORR, DoR, DCR, CBR, PK, time to worsening of ECOG, time to SRE. -Baseline, End of Study (up to approximately 31 months) for changes from baseline in EQ-5D 5L, EORTC QLQ-C30, EORTC QLQ-BR23, BPI.

Countries

Australia, Belgium, Canada, Denmark, Finland, France, Germany, Greece, Italy, Japan, Korea, Republic of, Mexico, Poland, Romania, Russian Federation, Spain, Switzerland, Taiwan, United States

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026