Serplulimab Combined With Trastuzumab Rezetecan as Neoadjuvant Therapy for Triple-Negative Breast Cancer

Starting soon · Phase 2

Conditions studied: Breast Cancer, Serplulimab Combined With SHR-A1811 as Neoadjuvant Therapy for Triple-Negative Breast Cancer

In brief

To evaluate the efficacy and safety of Serplulimab in combination with Trastuzumab Restuzumab for the neoadjuvant treatment of triple-negative breast cancer, aiming to provide evidence for optimizing the strategy of combining immunotherapy with ADC drugs in the neoadjuvant setting.

Key facts

Study ID

NCT07466303

Run by

Xijing Hospital

People needed

84

Starts

2026-03-25

Expected to finish

2031-04-01

Last updated by the study team

2026-03-12

Who can join

Age: 18 and older, up to 70. Sex: female. Healthy volunteers: not accepted.

You may qualify if…

• Female patients aged 18 to 70 years, inclusive.
• Histologically confirmed, treatment-naïve, early-stage triple-negative breast cancer (TNBC), defined as estrogen receptor (ER) and progesterone receptor (PR) expression <1% by immunohistochemistry (IHC), and human epidermal growth factor receptor 2 (HER2)-negative (IHC 0/1+ or IHC 2+ with negative in situ hybridization confirmation) per current American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) guidelines.
• Clinical stage T1cN1-2 or T2-4N0-2 according to the American Joint Committee on Cancer (AJCC) staging system, 8th edition.
• At least one measurable lesion as defined by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
• Adequate hematologic, hepatic, renal, and cardiac function within 14 days prior to enrollment:
• Hematologic: Absolute neutrophil count (ANC) ≥1.5 × 10⁹/L; platelet count ≥100 × 10⁹/L; hemoglobin ≥90 g/L (without transfusion or growth factor support within 14 days).
• Hepatic: Total bilirubin ≤1.5 × upper limit of normal (ULN); alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤2.5 × ULN.
• Renal: Serum creatinine and blood urea nitrogen (BUN) ≤1.5 × ULN.
• Cardiac: Left ventricular ejection fraction (LVEF) ≥50% measured by echocardiogram; corrected QT interval (QTc) <470 ms on 12-lead electrocardiogram (ECG).
• Willingness to provide archival or fresh tumor tissue sample for programmed death-ligand 1 (PD-L1) biomarker analysis using the 22C3 pharmDx assay.
• Ability to understand and willingness to sign a written informed consent document.

You may not qualify if…

• Evidence of metastatic (Stage IV) disease or bilateral breast cancer at diagnosis.
• Prior systemic anticancer therapy (including chemotherapy, endocrine therapy, immunotherapy, or biological therapy) for any malignancy within 4 weeks before the first dose of study treatment.
• Diagnosis of any other malignancy within the past 5 years, except for adequately treated non-melanoma skin cancer, basal cell carcinoma, or carcinoma in situ of the cervix.
• Known active infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV-DNA ≥500 IU/mL), or hepatitis C virus (detectable HCV-RNA).
• Active autoimmune disease requiring systemic immunosuppressive therapy within the past 2 years.
• Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection requiring systemic antibiotic therapy within 2 weeks, symptomatic congestive heart failure, unstable angina pectoris, clinically significant cardiac arrhythmia, or psychiatric illness that would limit compliance with study requirements.
• History of allogeneic hematopoietic stem cell or solid organ transplantation.
• Pregnant or lactating women, or women of childbearing potential who are unwilling to use a highly effective method of contraception during the treatment period and for at least 7 months after the last dose.
• Known hypersensitivity to any component of serplulimab or SHR-A1811.
• Any condition that, in the opinion of the investigator, would compromise patient safety or interfere with the completion of the study procedures.

Where it is running

• the First Affiliated Hospital of the Air Force Medical University — Xi'an, China

Full record on ClinicalTrials.gov

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