Tumor-Targeted-NIR-II Fluorescent Molecular Probes for the Identification of Breast Cancer Tissue and SLN Metastatic Status

Yunnan Cancer Hospital

Status: Enrolling

Conditions: Sentinel Lymph Node; Breast Cancer; Metastases; Margin Assessment

Treatments: Diagnostic Test: NIR-II Probe(i.e ICG-POL6326) incubation solution

Study type: Observational

Funder types: Other

Identifiers

NCT06713161

KYLX2024-240

Details and patient eligibility

About

Accurate evaluation of tumor boundaries in breast-conserving surgery is closely associated with reducing the second operation of patients. Meanwhile, accurately assessing sentinel lymph node (SLN) metastasis is crucial for determining the extent of axillary lymph node dissection (ALND) and minimizing complications. Near-infrared-II (NIR-II) fluorescence imaging using molecular agents has shown promise for in situ imaging during resection. However, very effective probes can be applied to clinical trials up to now, which limits the clinical application of fluorescence imaging. Here we developed a new technology that can quickly differentiation between cancer and para-cancer tissue as well as metastatic and normal sentinel lymph nodes(SLN). In brief, the fresh tissues were incubated with the probe immediately after intraoperative resection and imaged to identify the tumor area and distinguish the metastatic status of SLN. The accuracy of fluorescence imaging was confirmed by pathological diagnosis.

Full description

After enrollment, the patients received surgical treatment according to clinical diagnosis and treatment.During the operation, the excised breast tissue and SLN was incubated, and the specific procedure was as follows.

1. Preparation of the incubation solution: The probe was dissolved in phosphate buffer saline(PBS) buffer as the incubation solution at room temperature in the dark,with varying concentrations (12.5, 25, 50,100 ug/mL).
2. In vitro incubation of fresh breast cancer or SLN tissues: The fresh excision breast cancer and SLN tissues were completely soaked in the incubation solution for about 1,3, 5, 7 or 10 minutes, followed by 5 minutes rinse with PBST buffer (PBS with Tween 20) and drying with the use of absorbent paper.
3. Analysis of the images in the "Digital Precision Medicine(DPM)" NIR-II system. The DPM parameter was set up before scaling. Then fluorescence imaging was performed with the DPM NIR-II system. And the result was analyzed to identify the tumor area and distinguish the metastatic status of SLN.
4. Confirmed the diagnosis by pathological examination.

Enrollment: 40 estimated patients

Sex: Female

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adult patients between 18-75 years of age
• Female
• Patients presenting with a breast nodule or mass presumed to be resectable on pre-operative assessment
• Good operative candidate
• Subject capable of giving informed consent and participating in the process of consent

Exclusion criteria

• Patients unable to participate in the consent process
• Patients had contraindications to surgery, such as serious cardiopulmonary disease, coagulation dysfunction, etc
• Other conditions that the researcher considers inappropriate to participate in the study

Trial design

40 participants in 1 patient group

NIR-II probe incubation

Description:

The fresh excision breast tissues or SLN will be completely soaked in the NIR-II probe (i.e:ICG-POL6326) incubation solution (12.5,25,50,100 ug/mL) for1, 3, 5,7 or 10 min, followed by 5 min of rinsing with PBST buffer and drying with absorbent paper.The NIR-II fluorescence imaging will be then performed under the DPM NIR-II system. And the correlation between pathological characterization and fluorescent information will be further analyzed.

Treatment:

Diagnostic Test: NIR-II Probe(i.e ICG-POL6326) incubation solution