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CDK4/6 Inhibitor

Abemaciclib + Fulvestrant for Breast Cancer (postMONARCH Trial)

Milford, MA
Phase 3
Waitlist Available
Research Sponsored by Eli Lilly and Company
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
If female, have a postmenopausal status by natural or surgical means or by ovarian function suppression
Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group scale (Oken et al. 1982)
Must not have
Have received more than 1 line of therapy for advanced or metastatic disease
Have received prior treatment with fulvestrant, any investigational estrogen receptor (ER)-directed therapy (including selective ER degraders [SERDs] and non-SERDs), any phosphatidylinositol 3-kinase (PI3K)-, mammalian target of rapamycin (mTOR)-, or protein kinase B (AKT)-inhibitor
Timeline
Screening 3 weeks
Treatment Varies
Follow Up randomization until measured progressive disease (up to 22 months)
Awards & highlights
Pivotal Trial

Summary

This trial is testing a combination of two drugs, abemaciclib and fulvestrant, for treating a specific type of breast cancer that has not responded to previous treatments. Abemaciclib is taken orally and is approved for treating certain types of breast cancer. The goal is to see if this combination can help stop the cancer from growing. The study may last several years, depending on how well the treatment works for each patient.

See full description
Who is the study for?
This trial is for postmenopausal women with HR+, HER2- advanced or metastatic breast cancer that worsened after treatment with CDK4/6 inhibitors and endocrine therapy. They must have good organ function, measurable disease progression, be able to take oral medication, and have a performance status of 0 or 1. Women who've had chemotherapy for metastatic breast cancer or certain other treatments are excluded.Check my eligibility
What is being tested?
The study tests if adding abemaciclib to fulvestrant improves outcomes in patients whose breast cancer progressed after previous therapies. Participants will either receive the combination of abemaciclib plus fulvestrant or a placebo plus fulvestrant over up to five years, depending on their response.See study design
What are the potential side effects?
Abemaciclib may cause diarrhea, fatigue, nausea, decreased appetite and blood cell counts leading to infection risk; it can also affect liver enzymes. Fulvestrant's side effects include injection site pain, general weakness and elevated liver enzymes.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am postmenopausal.
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I am fully active or restricted in physically strenuous activity but can do light work.
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My cancer has grown or come back, shown by scans.
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My breast cancer is HR+ and HER2-, and it has spread.
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I can swallow pills.
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I am currently being treated with a CDK4/6 inhibitor and aromatase inhibitor for advanced breast cancer.
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Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I have undergone multiple treatments for my advanced or metastatic disease.
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I have previously been treated with specific hormone or targeted therapies for my cancer.
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I have brain metastases that are causing symptoms or have not been treated.
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I have had chemotherapy for breast cancer that has spread.
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My cancer has spread to my internal organs, lymph system, or brain/spinal cord linings.
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Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~randomization until measured progressive disease (up to 22 months)
This trial's timeline: 3 weeks for screening, Varies for treatment, and randomization until measured progressive disease (up to 22 months) for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Progression-Free Survival (PFS)
Secondary study objectives
Objective Response Rate (ORR): Percentage of Participants Who Achieved a Best Overall Response (BOR) of Complete Response (CR) or Partial Response (PR)
Progression Free Survival (PFS) Determined by Blinded Independent Central Review (BICR)

Side effects data

From 2018 Phase 2 trial • 132 Patients • NCT02102490
91%
Diarrhoea
67%
Nausea
48%
Fatigue
45%
Decreased appetite
35%
Vomiting
27%
Anaemia
26%
Abdominal pain
23%
Asthenia
23%
Neutrophil count decreased
21%
Cough
20%
Constipation
20%
Headache
19%
Arthralgia
18%
White blood cell count decreased
18%
Neutropenia
15%
Alopecia
14%
Dry mouth
14%
Platelet count decreased
14%
Weight decreased
14%
Dysgeusia
13%
Dyspnoea
12%
Abdominal pain upper
12%
Back pain
12%
Dizziness
11%
Oedema peripheral
11%
Dyspepsia
11%
Pyrexia
11%
Blood creatinine increased
10%
Pain
9%
Stomatitis
9%
Aspartate aminotransferase increased
8%
Thrombocytopenia
8%
Lacrimation increased
8%
Dehydration
8%
Dry skin
8%
Pruritus
8%
Alanine aminotransferase increased
7%
Flatulence
7%
Upper respiratory tract infection
7%
Urinary tract infection
7%
Hypokalaemia
6%
Chills
6%
Musculoskeletal chest pain
6%
Musculoskeletal pain
6%
Anxiety
5%
Gastrooesophageal reflux disease
5%
Rash
5%
Myalgia
2%
Cellulitis
2%
Pleural effusion
1%
Atypical pneumonia
1%
Gastroenteritis viral
1%
Lung infection
1%
Sepsis
1%
Fall
1%
Hip fracture
1%
Pneumonitis
1%
Pneumothorax
1%
Febrile neutropenia
1%
Respiratory tract infection
1%
Haematotoxicity
1%
Sinus bradycardia
1%
Tachycardia
1%
Large intestinal obstruction
1%
Pancreatic enzyme abnormality
1%
Pancreatitis
1%
Varices oesophageal
1%
Electrocardiogram abnormal
1%
Liver function test abnormal
1%
Renal function test abnormal
1%
Bone pain
1%
Muscular weakness
1%
Acute kidney injury
1%
Pulmonary embolism
1%
Arterial thrombosis
1%
Epilepsy
100%
80%
60%
40%
20%
0%
Study treatment Arm
Abemaciclib

Awards & Highlights

Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: Arm A: Abemaciclib plus FulvestrantExperimental Treatment2 Interventions
Abemaciclib 150 milligram (mg) administered orally twice daily (BID) on Days 1 to 28 of a 28-day cycle in combination with fulvestrant 500 mg administered intramuscularly (IM) on Days 1 and 15 of Cycle 1, then on Day 1 of Cycle 2 and beyond. Participants received treatment until discontinuation criteria were met.
Group II: Arm B: Placebo plus FulvestrantActive Control2 Interventions
Placebo administered orally BID on Days 1 to 28 of a 28-day cycle in combination with fulvestrant 500 mg administered IM on Days 1 and 15 of Cycle 1, then on Day 1 of Cycle 2 and beyond. Participants received treatment until discontinuation criteria were met.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Fulvestrant
2011
Completed Phase 3
~4160
Abemaciclib
2019
Completed Phase 2
~2120

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
CDK4/6 inhibitors like Abemaciclib block cyclin-dependent kinases 4 and 6, preventing cancer cells from progressing through the cell cycle and proliferating. Estrogen receptor antagonists like Fulvestrant bind to estrogen receptors, blocking estrogen's effects and inhibiting the growth of hormone receptor-positive breast cancer cells. These targeted therapies are crucial for effectively managing cancer by directly interfering with specific pathways that cancer cells rely on for growth and survival.
[A Case of Palbociclib plus Fulvestrant‒Resistant Metastatic Breast Cancer That Responded to Abemaciclib plus Fulvestrant].Abemaciclib plus fulvestrant in hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer in premenopausal women: subgroup analysis from the MONARCH 2 trial.The role of abemaciclib in treatment of advanced breast cancer.

Find a Location

Closest Location:Franciscan St. Francis Health· Indianapolis, IN· 165 miles

Who is running the clinical trial?

Eli Lilly and CompanyLead Sponsor
2,696 Previous Clinical Trials
3,469,899 Total Patients Enrolled
Study DirectorEli Lilly and Company
1,398 Previous Clinical Trials
432,061 Total Patients Enrolled

Media Library

Abemaciclib (CDK4/6 Inhibitor) Clinical Trial Eligibility Overview. Trial Name: NCT05169567 — Phase 3
Cancer Research Study Groups: Arm A: Abemaciclib plus Fulvestrant, Arm B: Placebo plus Fulvestrant
Cancer Clinical Trial 2023: Abemaciclib Highlights & Side Effects. Trial Name: NCT05169567 — Phase 3
Abemaciclib (CDK4/6 Inhibitor) 2023 Treatment Timeline for Medical Study. Trial Name: NCT05169567 — Phase 3
~92 spots leftby Mar 2026