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EpCAM-Targeted Surface-Enhanced Raman Spectroscopy Nanotags for Rapid Evaluation of Surgical Margins and Sentinel Lymph Node Metastasis Status in Breast Cancers

NCT07018505 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 40

Last updated 2025-06-12

No results posted yet for this study

Summary

For early breast cancer patients, breast-conserving surgery and sentinel lymph node biopsy have emerged as the cornerstone of precision oncology, harmonizing oncologic efficacy with the preservation of breast cosmetics and axillary function. However, conventional margin evaluation relies on subjective experience, leading to positive margin rates of 15%-50% Additionally, sentinel lymph node biopsy faces inherent technical limitations, including prolonged procedural time and significant false-negative rates in detecting micro-metastases. To overcome these challenges, the investigators will introduce a stable "sandwich" EpCAM-targeted surface-enhanced Raman spectroscopy (SERS) detection system to provide rapid evaluation of surgical margins and sentinel lymph node (SLN) metastasis status. In brief, a portion of resected tissue will be immediately homogenized by grinding, and the tissue homogenate will then be analyzed using this detection system to determine its histological characteristics. Pathological confirmation will further validate the method. This approach aims to improve the accuracy and efficiency of intraoperative assessment of breast-conserving surgical margins and SLN status, thereby effectively reducing local recurrence rates and complications.

Conditions

Interventions

DIAGNOSTIC_TEST

SERS detection

Incubation: A mixture of 20 μL (0.5 mg/mL) magnetic beads (MB@RB20115UD), 40 μL SERS nanotags (Au-IR808@RB20115UC), and prepared sample is incubated for 5 min. Washing: The supernatant is removed after magnetic separation (30 s), followed by washing with PBST (pH 7.4, 0.05% Tween-20). Detection: The separated pellet is resuspended in 10 μL ultrapure water. Then 2 μL solution is spotted onto a 2.5 mm × 2.5 mm gold substrate for air-drying. Raman spectra are acquired using a portable spectrometer (785 nm laser, 500 mW power, 5 s acquisition time, triplicate measurements). Peak areas within 540-570 cm-1 are quantified.

Sponsors & Collaborators

  • Xiang'an Hospital of Xiamen University

    collaborator OTHER

  • Yunnan Cancer Hospital

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-06-15
Primary Completion
2026-06-15
Completion
2026-07-01

Countries

  • China

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07018505 on ClinicalTrials.gov