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Abemaciclib; 1-0-1 per os

Phase 3

Breast Cancer Female | Small molecule | Oncology |Eli Lilly and Company|Last Updated: Nov 19, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedNO_TREATMENT_CONTROLLEDDMC
Total Trials1
Total Enrollment1,260

FDA Designations

No designations recorded

Clinical trial landscape

Abemaciclib; 1-0-1 per os · 1 trial · 1 indication

Phase 3 1
NCT04565054Adjuvant Therapy With Abemaciclib + SOC ET vs. SOC ET in Clinical or Genomic High Risk, HR+/HER2- EBCBreast Cancer Female
ACTIVE NOT_RECRUITING1,260 Analytics
PHASE3ACTIVE NOT_RECRUITING
Adjuvant Therapy With Abemaciclib + SOC ET vs. SOC ET in Clinical or Genomic High Risk, HR+/HER2- EBC
Breast Cancer FemaleUnlock trial analytics

Study Endpoints

Primary Endpoints

invasive disease-free survival (iDFS)
at end of study, 3-6 years after start of study treatment

superiority in invasive disease-free survival (iDFS) of abemaciclib + endocrine therapy vs. standard-of-care endocrine therapy in patients with HR+/HER2- high risk breast cancer.

Secondary Endpoints

overall survival (OS)
at end of study, 3-6 years after start of treatment
differences in overall survival (OS) and dDFS
at end of study, 3-6 years after start of study treatment
subgroup and multivariable survival analyses
at end of study, 3-6 years after start of study treatment
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Abemaciclib plus ETEXPERIMENTALAbemaciclib 150 mg, 2 x daily, resulting in 300 mg/day, oral, 24 months plus endocrine treatment of physician´s choice
Standard-of-care ETNO_INTERVENTIONStandard-of-care ET according to clinical guidelines. Pre-/perimenopausal patients: * Either aromatase inhibitor + GnRH agonist * or Tamoxifen +/- GnRH-agonist (as per investigator´s decision) or Postmenopausal patients: * Either Aromatase inhibitor * or Tamoxifen OR

Interventions

NameTypeDescription
Abemaciclib 50 MG; 150mg 1-0-1 per osDRUGExperimental: Abemaciclib plus ET Abemaciclib 150 mg, 2 x daily, resulting in 300 mg/day, oral, 24 months plus endocrine treatment of physician´s choice
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites85

Inclusion Criteria: A. Prior to REGISTRATION 1\. Written informed consent prior to any study procedures (outcomes of standard-of-care procedures performed before signing of informed consent by the patient but within allowed screening period can be used for screening of patient). 2. Female. 3. ≥ 18...

Countries:GermanyPolandSpain
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Frequently asked questions about Abemaciclib; 1-0-1 per os

What is Abemaciclib used for in breast cancer?

Abemaciclib is an investigational small molecule being studied for use in female breast cancer. It is currently in Phase 3 clinical development as adjuvant therapy for patients with clinical or genomic high risk, hormone receptor positive, HER2 negative early breast cancer. The drug is administered orally.

Who makes Abemaciclib?

Abemaciclib is being developed by Eli Lilly and Company, a pharmaceutical company traded on the New York Stock Exchange under the ticker symbol LLY. The company is conducting a Phase 3 clinical trial to evaluate the drug in the adjuvant treatment of breast cancer.

What phase is Abemaciclib in?

Abemaciclib is in Phase 3 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing Phase 3 trial is evaluating its use as adjuvant therapy in high risk, hormone receptor positive, HER2 negative early breast cancer.

What clinical trials is Abemaciclib in?

Abemaciclib is being studied in a Phase 3 clinical trial with the identifier NCT04565054. This trial is active but not recruiting participants, with an enrollment of 1,260 female patients. The study is being conducted in Germany, Poland, and Spain, and is comparing abemaciclib plus standard endocrine therapy versus standard endocrine therapy alone.

Is Abemaciclib the same as Abemaciclib 50 MG or 150mg 1-0-1 per os?

Yes, Abemaciclib 50 MG and 150mg 1-0-1 per os are alternative names for the same drug, Abemaciclib. The dosing regimen 1-0-1 per os indicates the drug is taken orally, once in the morning and once in the evening, with the specific strength depending on the prescribed dose.

What does Abemaciclib target?

Abemaciclib is a small molecule that targets cyclin-dependent kinases, which are enzymes involved in cell cycle regulation. By inhibiting these kinases, the drug aims to slow or stop the growth of cancer cells. This mechanism is being evaluated in the context of hormone receptor positive, HER2 negative breast cancer.