Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Breast Neoplasms

Breast Diseases

Skin Diseases

Antineoplastic Agents

Antirheumatic Agents

All Drugs and Chemicals

Anti-Infective Agents

Cyclophosphamide

Docetaxel

Epirubicin

Aromatase Inhibitors

Immunosuppressive Agents

Immunologic Factors

Antineoplastic Agents, Alkylating

Alkylating Agents

Tubulin Modulators

Antimitotic Agents

Anti-Bacterial Agents

Antibiotics, Antitubercular

Enzyme Inhibitors

Estrogens

Estrogen Antagonists

Estrogen Receptor Antagonists

Hormones

Hormone Antagonists

Dalpiciclib: Take 125 mg once daily for 3 weeks, then stop for 1 week. Each cycle is completed in 4 weeks.

AI: Take according to the instructions provided.

Docetaxel for injection: Administered as a 75 mg/m2 intravenous infusion Epirubicin hydrochloride for injection: Administered as a 75 mg/m2 intravenous infusion.

Cyclophosphamide for injection: Administered as a 500 mg/m2 intravenous infusion.

Dalpiciclib: Take 125 mg once daily for 3 weeks, then stop for 1 week. Each cycle is completed in 4 weeks. It is recommended to take the medication approximately at the same time each day, with warm water, preferably on an empty stomach. Fasting for at least 1 hour before and after medication is advised.

Dalpiciclib

AI: Take according to the instructions provided.

Aromatase inhibitor

Administered as a 75 mg/m2 intravenous infusion over approximately 30 minutes. It is given every three weeks and dose reduction or treatment delay is allowed, up to a maximum delay of 3 weeks from the previous dose calculation. Treatment will be terminated if the delay exceeds this limit.

Docetaxel injection

Administered as a 75 mg/m2 intravenous infusion. It is given every three weeks and dose reduction or treatment delay is allowed, up to a maximum delay of 3 weeks from the previous dose calculation. Treatment will be terminated if the delay exceeds this limit.

Epirubicin Hydrochloride Injection

Administered as a 500 mg/m2 intravenous infusion. It is given every three weeks and dose reduction or treatment delay is allowed, up to a maximum delay of 3 weeks from the previous dose calculation. Treatment will be terminated if the delay exceeds this limit.

Cyclophosphamide injection

lina zhang

Cuizhi Geng, M.D.

This study is a multi-center, randomized, prospective phase II clinical trial aimed at exploring and evaluating the efficacy of dalpiciclib combined with AI in neoadjuvant treatment for ER strong positive（ER≥50%），HER2-negative, Ki-67≤20%,T1-3N1M0 postmenopausal breast cancer. The primary objectives are to demonstrate non-inferiority in efficacy compared to chemotherapy and to assess its superior safety profile.

This study is a multi-center, randomized, prospective non-inferiority exploratory phase II clinical trial. Eligible subjects were randomly assigned in a 1:1 ratio to either the dalpiciclib combined with AI group （neoadjuvant endocrine group） or the AC-T group （chemotherapy group） after screening. The administration of the investigational drugs started within 48 hours after randomization. Subjects will receive either 24 weeks of dalpiciclib combined with AI or AC-T treatment until disease progression, intolerable adverse events, withdrawal of informed consent, or discontinuation by the investigator's judgment.

Dalpiciclib Plus AI (Neoadjuvant Endocrine Therapy) Compared With Neoadjuvant Chemotherapy in Early Breast Cancer （EBC）

A Phase II Randomized, Non-inferiority Study Comparing the Efficacy and Safety of Dalpiciclib Combined With AI With Neoadjuvant Chemotherapy in ER+ HER2- Postmenopausal Breast Cancer Patients

Radiological response is the percentage of participants with CR or, PR according to RECIST v.1.1. A responder is defined as any participant who exhibits a CR or PR. CR is the disappearance of all target lesions. PR is a 30% decrease in the sum of diameter of target lesions, taking as reference the baseline sum diameters. PD is 20% increase in the sum of diameters of target lesions taking as reference the smallest sum and the appearance of 1 or more new lesions.

EORTC QLQ-C30 v3.0 was a self-administered questionnaire with multidimensional scales that measures 5 functional domains (physical, role, emotional, cognitive, or social functioning), global health status and symptom scales of fatigue, pain, nausea/vomiting, dyspnea, insomnia, appetite loss, constipation, diarrhea, or financial difficulties. A linear transformation is applied to standardize the raw scores to range between 0 and 100 per developer guidelines. For functional domains and global health status, higher scores represent a better level of functioning. For symptoms scales, higher scores represented a greater degree of symptoms.

Residual cancer burden (RCB) is estimated from routine pathologic sections of the primary breast tumor site and the regional lymph nodes after the completion of neoadjuvant therapy. 6 variables are included in a calculation formula.

PEPI stands for Preoperative Endocrine Prognostic Index. It is a scoring system used in breast cancer research to assess the response to neoadjuvant endocrine therapy. PEPI evaluates various factors, including tumor size, lymph node involvement, Ki-67 proliferation index, and estrogen receptor status, to predict the risk of recurrence and overall prognosis in patients with hormone receptor-positive breast cancer. The PEPI score helps in determining the effectiveness of neoadjuvant endocrine therapy and guiding treatment decisions.

pCR is defined as absence of invasive cancer in the breast and sampled regional lymph nodes.

Tumor tissue collected through a core biopsy at baseline and at the end of cycle 1 was used to determine Ki67 expression. Ki67 expression is defined as the percent of cells staining positive by validated central assay.

The toxicity will be evaluated according to the scale CTC-AE version 5.0

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Dalpiciclib Plus AI (Neoadjuvant Endocrine Therapy) Compared With Neoadjuvant Chemotherapy in Early Breast Cancer （EBC）	NCT06107673	Breast Cancer	Dalpiciclib Aromatase inhib... Docetaxel injec... Epirubicin Hydr... Cyclophosphamid...	18 Years - 75 Years	Hebei Medical University Fourth Hospital
Dalpiciclib Plus AI (Neoadjuvant Endocrine Therapy) Compared With Neoadjuvant Chemotherapy in Early Breast Cancer （EBC）	NCT06107673	Breast Cancer	Dalpiciclib Aromatase inhib... Docetaxel injec... Epirubicin Hydr... Cyclophosphamid...	18 Years - 75 Years	Hebei Medical University Fourth Hospital

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