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Abemaciclib Dose Escalation in Early High-Risk Breast Cancer Adjuvant Therapy

NCT07599137 · Status: NOT_YET_RECRUITING · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 86

Last updated 2026-05-20

No results posted yet for this study

Summary

Abemaciclib combined with endocrine therapy has become one of the important adjuvant treatment regimens for patients with HR+/HER2- high-risk early breast cancer. However, adverse events such as diarrhea, fatigue, neutropenia and elevated liver enzymes are concentrated in the early stage of adjuvant therapy, which often lead to dose reduction, temporary drug interruption or even permanent discontinuation. This further affects treatment adherence, relative dose intensity (RDI) and treatment completion rate.

Findings from the TRADE study suggest that a step-up dosing strategy, initiating at a lower dose followed by gradual titration to the standard dose, combined with standardized patient education and symptomatic management, may improve early treatment tolerance, reduce the burden of partial toxicities, and increase the likelihood of patients achieving and maintaining abemaciclib 150 mg twice daily. Based on the above evidence and clinical experience, step-up dosing has been adopted by some clinicians for real-world clinical practice.

Nevertheless, existing evidence is mainly derived from non-Chinese populations. There is still a lack of systematic real-world data on step-up dosing among Chinese breast cancer patients under routine outpatient management, including the early toxicity profile, dose escalation achievement rate at each stage, dose adjustment pathways (prolonged escalation, treatment pause or dose de-escalation), RDI distribution, correlation with quality of life, and baseline factors affecting treatment tolerance and dose target attainment. Therefore, it is necessary to conduct a real-world study focused on Chinese patients to fill the gap in local clinical evidence, and provide a basis for clinical pathway formulation, patient education, and subsequent multicenter validation studies.

Conditions

  • HR+/HER2- Breast Cancer

Interventions

OTHER

Dose escalation

Patients receiving postoperative abemaciclib step-up dosing regimen. Dose escalation schedule: 100 mg BID (Weeks 1-4), 100/150 mg daily (Weeks 5-8), 150 mg BID (Weeks 9-12).

DRUG

Dose Escalation

Patients receiving postoperative abemaciclib step-up dosing regimen. Dose escalation schedule: 100 mg BID (Weeks 1-4), 100/150 mg daily (Weeks 5-8), 150 mg BID (Weeks 9-12).

Sponsors & Collaborators

  • Peking University Cancer Hospital & Institute

    lead OTHER

Study Design

Allocation
NA
Purpose
PREVENTION
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-05-30
Primary Completion
2027-12-30
Completion
2028-02-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07599137 on ClinicalTrials.gov