Molecular Subtyping of Breast Cancer-derived Small Extracellular Vesicles (sEVs) to Predict Therapeutic Efficacy

Recruiting now

Conditions studied: Breast Cancer

In brief

The goal of this observational study is to learn if a new diagnostic test using specific labels for breast cancer sEVs on a microchip can accurately diagnose the molecular subtypes in patients with breast cancer. The main questions it aims to answer are: * What is the sensitivity of this new sEVs-based panel for diagnosing breast cancer molecular subtypes? * What is the specificity of this new sEVs-based panel for diagnosing breast cancer molecular subtypes? Researchers will compare the results from the new sEVs panel to the results from the standard pathological diagnosis to see if the new panel is accurate and reliable. Participants will be asked to: * Provide blood samples and tissue samples. * Allow researchers to access their clinical data, such as their diagnosis, treatment information, and outcomes.

Key facts

Study ID: NCT07574749
Run by: Fudan University
People needed: 1500
Starts: 2025-04-07
Expected to finish: 2028-07-30
Last updated by the study team: 2026-05-08

Who can join

Age: 18 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Age 18-75 years (inclusive)
ECOG performance status 0-1
Life expectancy ≥3 months
Unresectable or metastatic breast cancer
Core needle biopsy of recurrent/metastatic lesions is ongoing or planned before initiating new treatment regimen, with provision of fresh tumor tissue specimens and collection of peripheral blood samples
Per RECIST v1.1 criteria, at least one measurable lesion or bone-only metastases
Adequate bone marrow reserve and organ function prior to first dose:
Bone marrow reserve: Platelet count (PLT) ≥90 × 10⁹/L, absolute neutrophil count (ANC) ≥1.5 × 10⁹/L, hemoglobin ≥9 g/dL
Coagulation function: INR ≤1.5, APTT ≤1.5 × ULN
Hepatic function: Basically normal liver function, total bilirubin ≤1.5 × ULN (patients with Gilbert's syndrome may have total bilirubin ≤3 × ULN), AST and ALT ≤2.5 × ULN (if liver metastases are present, AST and ALT ≤5 × ULN)
Renal function: Serum creatinine ≤1.5 × ULN or creatinine clearance ≥50 mL/min (calculated by Cockcroft-Gault formula)
Cardiac function: Left ventricular ejection fraction (LVEF) ≥50%; QTcF ≤470 ms for females, ≤450 ms for males Able to communicate effectively with the investigator and understand and comply with all requirements of the study -

You may not qualify if…

Receipt of radiotherapy, chemotherapy, traditional Chinese medicine with anti-tumor indications, or local therapy (interventional treatment but excluding tumor biopsy, ablation therapy, etc.) within 2 weeks prior to enrollment
Adverse reactions from previous anti-tumor treatment not recovered to ≤Grade 1 per CTCAE v5.0 (except for toxicities judged by the investigator to have no safety risk, such as alopecia, long-term toxicities from radiotherapy, or other toxicities ≤Grade 2)
Other malignancies within the past 5 years, excluding cured cervical carcinoma in situ, basal cell carcinoma of the skin, or squamous cell carcinoma of the skin
Uncontrolled or serious medical conditions, including but not limited to active infections requiring systemic antibiotic therapy
History of serious cardiovascular or cerebrovascular diseases, including but not limited to:
Serious cardiac rhythm or conduction abnormalities, such as ventricular arrhythmias requiring clinical intervention, second- to third-degree atrioventricular block, etc.
Class III-IV cardiac dysfunction per New York Heart Association (NYHA) criteria
Acute coronary syndrome, congestive heart failure, aortic dissection, stroke, or other Grade ≥3 cardiovascular or cerebrovascular events within 6 months prior to first dose
Clinically uncontrolled hypertension
Any factors that increase the risk of QTc prolongation or arrhythmias, such as heart failure, hypokalemia, congenital long QT syndrome, or use of any concomitant medications known or suspected to prolong the QT interval
History of immunodeficiency, including other acquired or congenital immunodeficiency diseases, or history of organ transplantation, allogeneic bone marrow transplantation, or autologous hematopoietic stem cell transplantation
HIV infection, active HBV or HCV infection; the following situations are allowed for enrollment:
Patients positive for hepatitis B surface antigen (HBsAg), with or without positive hepatitis B core antibody (anti-HBc), if HBV DNA <500 IU/mL or below the lower limit of the study site's reference range, and active infection is ruled out by the investigator based on clinical treatment, presentation, etc.
Patients positive for hepatitis C (HCV) antibody when HCV RNA is negative
Females of childbearing potential with positive pregnancy test within 7 days prior to first dose or who are lactating
Known psychiatric illness or disorder that may affect study compliance
Other conditions judged by the investigator to be unsuitable for participation in this study

Where it is running

Fudan University Shanghai Cancer Center — Shanghai, Shanghai Municipality, China (enrolling)

Full record on ClinicalTrials.gov

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