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Abemaciclib

Phase 2

Endometrial Cancer | Small molecule | Oncology |Celcuity Inc.|Last Updated: Jun 22, 2026

Target and mechanism

Molecular targetCDK6, CDK4
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment110

FDA Designations

No designations recorded

Clinical trial landscape

Abemaciclib · 1 trial · 1 indication

Phase 2 1
NCT03675893RESOLVE: Abemaciclib + Letrozole +/- Metformin or Gedatolisib in Endometrial CancerEndometrial Cancer
RECRUITING110 Analytics
PHASE2RECRUITING
RESOLVE: Abemaciclib + Letrozole +/- Metformin or Gedatolisib in Endometrial Cancer
Endometrial CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression Free Survival Rate
6 months

Number of patients alive and disease progression-free per RECIST 1.1 criteria.

Objective Tumor Response Rate
6 months

Number of patients who experience objective tumor responses per RECIST 1.1 criteria.

Secondary Endpoints

Overall Survival Rate
3 years
Treatment-related toxicities
3 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort 1EXPERIMENTAL* Abemaciclib is administered by mouth twice daily * LY3023414 is administered by mouth twice daily * Letrozole is administered by mouth once daily
Cohort 2EXPERIMENTAL* Abemaciclib is administered by mouth twice daily * LY3023414 is administered by mouth twice daily
Cohort 1AEXPERIMENTAL* Abemaciclib is administered by mouth twice daily * Letrozole is administered by mouth once daily
Cohort 3EXPERIMENTAL* Abemaciclib is administered by mouth twice daily * Letrozole is administered by mouth once daily * Metformin is administered by mouth once daily
Cohort 6EXPERIMENTAL* Abemaciclib is administered by mouth twice daily * Letrozole is administered by mouth once daily * Gedatolisib is administered intravenously on days 1, 8 and 15 of a 28-day cycle
Cohort 7EXPERIMENTAL* Abemaciclib is administered by mouth twice daily * Letrozole is administered by mouth once daily * Gedatolisib is administered intravenously on days 1, 8 and 15 of a 28-day cycle

Interventions

NameTypeDescription
LetrozoleDRUGLetrozole is a hormonal therapy that works by lowering the production of estrogen in the body.
AbemaciclibDRUGAbemaciclib is a cyclin-dependent kinase (CDK) inhibitor.
LY3023414DRUGLY3023414 is a potent selective inhibitor of the class I PI3K isoforms, mTOR, and DNA-PK.
MetforminDRUGMetformin inhibits mitochondrial adenosine-5'-triphosphate (ATP) synthesis, resulting in activation of the AMPK (5' AMP-activated protein kinase) pathway through LKB1, eventually causing inhibition of the mTOR pathway and subsequent reduction in protein synthesis and cellular proliferation.
GedatolisibDRUGGedatolisib is a PI3K/AKT/mTOR (PAM) pathway inhibitor.
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: * Participants must have cytologically or histologically confirmed endometrial cancer that is recurrent or metastatic and/or resistant to standard therapies, or for which no standard therapy is available. Participants enrolled in the second stage of Cohort 1A, or into Cohort 3, ...

Countries:United States
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Recent Changes (Last 90 Days)

HIGHJun 22, 2026NCT03675893Enrollment: 180 → 110
HIGHJun 22, 2026NCT03675893Enrollment: 180 → 110

Frequently asked questions about Abemaciclib

What is Abemaciclib used for in Endometrial Cancer?

Abemaciclib is an investigational small molecule being studied for the treatment of endometrial cancer. It is currently in Phase 2 clinical development. The drug is being evaluated in combination with letrozole, with or without metformin or gedatolisib, in patients with endometrial cancer.

What does Abemaciclib target?

Abemaciclib targets cyclin-dependent kinases (CDKs), as indicated by its '-ciclib' drug class. By inhibiting CDKs, it interferes with cell cycle progression, which is a key mechanism in cancer cell proliferation. This targeting is being explored in the context of endometrial cancer treatment.

Who makes Abemaciclib?

Abemaciclib is being developed by Celcuity Inc., a biopharmaceutical company. The company's stock ticker is CELC. Celcuity is conducting clinical trials to evaluate the drug's safety and efficacy in endometrial cancer.

What phase is Abemaciclib in?

Abemaciclib is in Phase 2 clinical development for endometrial cancer. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 2 trial is actively recruiting participants to further assess its potential as a treatment.

What clinical trials is Abemaciclib in?

Abemaciclib is being studied in the RESOLVE trial (NCT03675893), a Phase 2 study in endometrial cancer. This trial is recruiting 110 female patients aged 18 years and older in the United States. It evaluates abemaciclib plus letrozole, with or without metformin or gedatolisib.

Is Abemaciclib the same as other CDK inhibitors?

Abemaciclib belongs to the '-ciclib' class of CDK inhibitors, which includes other drugs targeting cyclin-dependent kinases. However, it is a distinct compound with its own chemical structure and development program. It is being studied specifically for endometrial cancer in combination with other agents.