Darsilide Combined With AI, Trastuzumab and Patuzumab in the Neoadjuvant Treatment of HR+/HER2+ Breast Cancer

Trial Title: Darsilide Combined With AI, Trastuzumab and Patuzumab in the Neoadjuvant Treatment of HR+/HER2+ Breast Cancer

NCT ID: NCT06276868

Condition: Breast Cancer
HER2-positive Breast Cancer

Conditions: Official terms:
Breast Neoplasms
Letrozole

Conditions: Keywords:
HER2-positive Breast Cancer
pathologic complete response
Dalcelli
objective response rate
Disease-free survival

Study type: Interventional

Study phase: Phase 2

Overall status: Not yet recruiting

Study design:

Allocation: N/A

Intervention model: Single Group Assignment

Intervention model description: Prospective, single arm clinical study

Primary purpose: Treatment

Masking: None (Open Label)

Intervention:

Intervention type: Drug
Intervention name: Dalcilib+letrozole+HP treatment group
Description: All participants received 150mg of darcilib once a day. Take it continuously for 21 days, then stop taking it for 7 days, with a treatment cycle of 28 days. Letrozole 2.5mg once daily (premenopausal patients treated with OFS); Trastuzumab (8mg/kg first dose, 6mg/kg sequential) and Patuzumab (840mg first dose, 420mg/kg sequential) were administered intravenously every 3 weeks, with all patients receiving 6 cycles of treatment.
Arm group label: Dalcilib+letrozole+HP

Other name: experimental group

Summary: This study is intended to carry out a single arm, prospective, open clinical study, and use Darsilide combined with endocrine therapy, Trastuzumab and Patuzumab to treat early or locally advanced breast cancer of TPBC before surgery. It is intended to further explore the efficacy and safety of the new adjuvant treatment for TPBC patients with step-down therapy.

Detailed description: This study is intended to carry out a single arm, prospective, open clinical study, and use Darsilide combined with endocrine therapy, Trastuzumab and Patuzumab to treat early or locally advanced breast cancer of TPBC before surgery. It is intended to further explore the efficacy and safety of the new adjuvant treatment for TPBC patients with step-down therapy. All participants received 150mg of darcilib once a day. Take it continuously for 21 days, then stop taking it for 7 days, with a treatment cycle of 28 days.Letrozole 2.5mg once daily (premenopausal patients treated with OFS).Trastuzumab (8mg/kg first dose, 6mg/kg sequential) and Patuzumab (840mg first dose, 420mg/kg sequential) were administered intravenously every 3 weeks, with all patients receiving 6 cycles of treatment. After starting treatment and before surgery, subjects will be monitored through breast MRI to evaluate clinical tumor remission. The primary endpoint was the pCR rate in the group receiving darcilib+letrozole+HP treatment, defined as the proportion of patients who achieved pCR after surgery after neoadjuvant therapy.

Criteria for eligibility:
Criteria:
Inclusion Criteria: 1. Female initial treatment patients aged ≥ 18 years and ≤ 70 years. 2. ECOG score 0-1 points. 3. Pathologically confirmed as invasive breast cancer, with tumor staging of cT2-3/N0-3M0. 4. HR positive HER-2 positive. 5. The main organs function normally and meet the following standards: （1）The blood routine examination standards must comply with:ANC ≥1.5×10 9/L；PLT ≥100×109/L；Hb ≥90g/L. （2）Biochemical examination must meet the following standards: TBIL ≤ 1.5 Upper limit of normal value (ULN)；ALT and AST ≤ 1.5 times the upper limit of normal value (ULN)；Alkaline phosphatase ≤ 2.5 times the upper limit of normal value (ULN)；BUN and Cr ≤ 1.5 × ULN and creatinine clearance rate ≥ 50 mL/min； （3）Cardiac ultrasound and echocardiography: Left ventricular ejection fraction (LVEF ≥ 50%). 6. For female patients who have not undergone menopause or surgical sterilization: Agree to abstain or use effective contraceptive methods during the treatment period and at least 7 months after the last administration during the study treatment. 7. Volunteer to join this study and sign an informed consent form. Exclusion Criteria: 1. Stage IV (metastatic) breast cancer. 2. inflammatory breast cancer. 3. Previously received anti-tumor therapy or radiation therapy for any malignant tumor, excluding cured cervical cancer in situ, basal cell carcinoma, or squamous cell carcinoma. 4. Simultaneously receiving anti-tumor therapies in other clinical trials, including endocrine therapy, bisphosphate therapy, or immunotherapy. 5. The patient had undergone major surgical procedures unrelated to breast cancer within 4 weeks before enrollment, or the patient has not fully recovered from such surgical procedures. 6. Individuals who have previously suffered from clinically significant lung diseases, including but not limited to interstitial pneumonia, pneumonia, pulmonary fibrosis, and radiation pneumonia (excluding radiation changes that do not require corrective treatment), or those who have been found to have such diseases through screening period examinations. 7. Serious heart disease or discomfort, including but not limited to the following diseases: （1）Confirmed history of heart failure or systolic dysfunction (LVEF<50%). （2）High risk uncontrolled arrhythmia（atrial tachycardia，ventricular tachycardia，Higher level atrioventricular block）； （3）Angina pectoris requiring treatment with anti angina drugs； （4）Clinically significant heart valve disease； （5）ECG shows transmural myocardial infarction； （6）Poor control of hypertension (systolic blood pressure>180 mmHg and/or diastolic blood pressure>100 mmHg)； 8. Inability to swallow, intestinal obstruction, or other factors that affect drug administration and absorption. 9. Individuals with a known history of allergies to the drug components of this protocol；Having a history of immunodeficiency, including HIV testing positive, or suffering from other acquired or congenital immunodeficiency diseases, or having a history of organ transplantation. 10. Pregnant and lactating female patients, those with fertility and positive baseline pregnancy test results, or those of childbearing age who are unwilling to take effective contraceptive measures during the entire trial period and within 7 months after the last study medication. 11. Suffering from severe comorbidities or other comorbidities that may interfere with the planned treatment, or any other situation where the researcher deems the patient unsuitable to participate in this study.

Gender: Female

Minimum age: 18 Years

Maximum age: 70 Years

Healthy volunteers: No

Locations:

Facility:
Name: Henan cacer hospital

Address:
City: Henan
Zip: 450008
Country: China

Start date: June 1, 2024

Completion date: June 1, 2029

Lead sponsor:
Agency: Henan Cancer Hospital
Agency class: Other

Source: Henan Cancer Hospital

Record processing date: ClinicalTrials.gov processed this data on November 12, 2024

Source: ClinicalTrials.gov page: https://clinicaltrials.gov/ct2/show/NCT06276868