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Chemotherapy Omission in ER+/HER2- Breast Cancer With 1-3 Positive Lymph Nodes Receiving Extended Adjuvant Abemaciclib

A Prospective, Randomized, Open-label, Multicenter Phase III Study to Explore Chemotherapy Omission in ER+/HER2-endocrine-sensitive Breast Cancer With 1-3 Positive Lymph Nodes Receiving Extended Adjuvant Abemaciclib

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06341621
Acronym
Rainbow
Enrollment
1900
Registered
2024-04-02
Start date
2024-04-02
Completion date
2029-01-01
Last updated
2024-04-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

adjuvant chemotherapy omission, adjuvant abemeciclib

Brief summary

This is a prospective, randomized, open-label, multicenter phase III study to explore chemotherapy omission in ER+/HER2-endocrine-sensitive breast cancer with 1-3 positive lymph nodes receiving extended (3 year) adjuvant abemaciclib

Detailed description

This is a prospective, randomized, open-label, multicenter phase III study to explore chemotherapy omission in estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative endocrine-sensitive breast cancer with 1-3 positive lymph nodes receiving extended (3 year) adjuvant abemaciclib. In this study, patient eligible will be randomized into either endocrine drug plus 3-year adjuvant abemaciclib without chemotherapy or treatment of physician's choice (TPC).The safety and efficacy of each group will be assessed through invasive disease free survival (iDFS), disease-free survival (DFS), distant disease free survival (DDFS), overall survival (OS) and adverse effects (AE) as graded by Common Terminology Criteria for Adverse Events (CTCAE) 5.0.

Interventions

DRUG3-year abemaciclib without chemo

aromatase inhibitors (± ovarian suppression) plus 3-year abemaciclib (100mg bid) without chemotherapy.

treatment of physician's choice including whether to receive chemotherapy, chemotherapy regimen and endocrine therapy regimen.

Sponsors

Fudan University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Arm 1# endocrine drug plus 3-year abemaciclib without chemotherapy Arm 2# treatment of physician's choice

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* women aged 18-80 years old; * Patient has localized invasive breast carcinoma with1-3 positive lymph nodes, T1-T2,and is ER+/HER2- confirmed by histopathology after early breast cancer surgery#HER2-negative breast cancer (based on most recently analyzed biopsy) defined as a negative in situ hybridization test or an Immunohistochemistry (IHC) status of 0, 1+ or 2+. If IHC is 2+, a negative in situ hybridization (Fluorescence in situ hybridization (FISH), Chromogenic in situ hybridization (CISH) . * ER≥50% * Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1; * Has adequate organ function meeting the following criteria: (1) adequate bone marrow function: hemoglobin ≥ 90 g/L (no blood transfusion within 14 days); absolute neutrophil count ≥ 1.5 x 109 /L; platelet count ≥ 100 \* 109 /L; (2)adequate liver and kidney function: Alanine Aminotransferase (ALT) ≤ 3×upper limit of normal (ULN), Aspartate Aminotransferase (AST) ≤ 3×ULN, Total Bilirubin (TBIL)≤ 1.5×ULN, serum creatinine ≤ 1×ULN#and with endogenous creatinine clearance rate of \>50 ml/min (Cockcroft-Gault formula). * Participants voluntarily joined the study, has signed informed consent before any trial related activities are conducted, has good compliance and has agreed to follow-up.

Exclusion criteria

* Has received neoadjuvant therapy (include chemotherapy, targeted therapy, radiotherapy or endocrine therapy#; * Has bilateral breast cancer; * Has previous history of additional malignancy, with the exception of adequately treated basal cell carcinoma and cervical carcinoma in situ. * Has metastatic (Stage 4) breast cancer; * Has any ≥T3 lesion * Is pregnant, is breast feeding women, or women of childbearing age who cannot practice effective contraceptives; * Patients participating in other clinical trials at the same time; * Has severe organ dysfunction (cardiopulmonary liver and kidney) insufficiency, left ventricular ejection fraction (LVEF) \< 50% (cardiac ultrasound); severe cardio cerebral vascular disease within the 6 months previous of randomization (such as unstable angina, chronic heart failure, uncontrolled hypertension with blood pressure\>150/90mmgh, myocardial infarction, or cerebral blood vessel); diabetic patients with poor blood glucose control; patients with severe hypertension; * Has severe or uncontrolled infection; * the researchers judged patients to be unsuitable for the study.

Design outcomes

Primary

MeasureTime frame
Invasive disease free survival5 year

Secondary

MeasureTime frame
disease free survival5 year
distant disease free survival5 year
overall survival5 year
Time Frame: 5 years] 5. adverse effects adverse effects5 year

Countries

China

Contacts

Primary ContactZhimin Shao, MD, PhD
zhimingshao@yahoo.com+86-021-64175590
Backup ContactYin Liu, MD
liuyinfudan@163.com+8664175590

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026