Using abemaciclib with endocrine therapy for early-stage breast cancer

Abemaciclib Dose Escalation to Maintain Intensity (ADE-MI)

PHASE4 · University of Illinois at Chicago · NCT06169371

This study is testing if a new way of giving abemaciclib with hormone therapy can help people with high-risk early-stage breast cancer avoid severe side effects and stay on their treatment longer.

Quick facts

PhasePHASE4
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Illinois at Chicago (other)
Locations3 sites (Chicago, Illinois and 2 other locations)
Trial IDNCT06169371 on ClinicalTrials.gov

What this trial studies

This phase IV trial investigates the use of abemaciclib in combination with endocrine therapy for patients with high-risk early-stage HR+HER2- breast cancer. The study aims to gradually increase the dose of abemaciclib over 2-3 weeks to reduce the incidence of severe diarrhea, allowing more patients to maintain the intended dosage. Participants will continue the combination therapy at the discretion of their healthcare providers after the intervention period. The trial is designed to assess the tolerability and effectiveness of this dosing strategy.

Who should consider this trial

Good fit: Ideal candidates are women with histologically confirmed early-stage HR+HER2- breast cancer who are prescribed adjuvant abemaciclib.

Not a fit: Patients with a chronic history of diarrhea or those with active infections requiring systemic therapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance the tolerability of abemaciclib, allowing more patients to benefit from effective treatment.

How similar studies have performed: Previous studies have shown that dose escalation can improve tolerability for similar treatments, suggesting a potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ECOG 0-2
* Histologically confirmed early-stage HR+HER2- breast cancer documented by biopsy who are prescribed adjuvant abemaciclib
* Able to provide written informed consent and HIPAA authorization for release of personal health information, via an approved UIC Institutional Review Board (IRB) informed consent form and HIPAA authorization.
* Women of childbearing potential must not be pregnant or breast-feeding. A negative serum or urine pregnancy test is required per institutional practice guidelines.
* As determined at the discretion of the enrolling physician or protocol designee, ability of the subject to understand and comply with study procedures for the entire length of the study.

Exclusion Criteria:

* Chronic history of diarrhea
* Active infection requiring systemic therapy
* Uncontrolled HIV/AIDS or active viral hepatitis
* Pregnant or nursing
* Any prior or concurrent malignancy whose natural history or treatment has the potential to interfere with the safety or efficacy assessment of this investigational regimen, as determined by the treating medical oncologist.
* Other major comorbidity as determined by study PI

Where this trial is running

Chicago, Illinois and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Breast Cancer

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.