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Evaluation of a Novel Axillary Lymph Node Ink Localization Technique: A Feasibility Study

NCT04136496 · Status: WITHDRAWN · Phase: NA · Type: INTERVENTIONAL

Last updated 2024-04-03

No results posted yet for this study

Summary

Patients with breast cancer and metastatic axillary lymphadenopathy routinely undergo neo-adjuvant chemotherapy. For these patients, biopsy clip markers are inserted into the biopsy proven metastatic lymph node pre-treatment, as they may reach complete clinical response post-therapy. Limited axillary surgery, as opposed to a full axillary dissection, may then be indicated. It is still necessary to surgically excise the biopsy proven metastatic lymph node to accurately assess the pathologic response to therapy, and subsequently tailor post-surgical therapies appropriately. As such, these lymph nodes require pre-operative localization which, at The Ottawa Hospital, currently requires radioactive seed insertion under sonographic guidance, typically performed within 5 days of surgery. The procedure is often challenging, as both normal appearing lymph nodes and 3 mm biopsy clip markers are difficult and in some cases impossible, to visualize on ultrasound. At the time of surgery, the excised lymph node is radiographed, to ensure the radioactive seed and biopsy clip marker are both successfully excised. Localization with Ink has the potential to replace both the biopsy clip markers and radioactive seeds as the surgeons are able to directly visualize the Ink intra-operatively and excise the Inked lymph node. A preliminary study out of Stanford on 28 patients who underwent localization of axillary lymph nodes with Ink injected 1-211 days pre-operatively, in the pre neo-adjuvant and post neo-adjuvant settings, showed that lymph nodes injected with Ink are visible intra-operatively months after surgery, suggesting that this is a feasible localization technique (1).

Conditions

Interventions

DEVICE

Black-Eye Ink

There are two proposed studies utilizing the Ink during differing timepoints.Both will identify patients with breast cancer, with a biopsied metastatic axillary lymph node(LN) with a tissue marker clip placed, as is current practice. In Study A, 0.5mL of Black Eye Ink will be placed in the metastatic LN after neoadjuvant therapy. In Study B, 0.5mL of Black Eye Ink will be placed before neoadjuvant therapy. In both studies, the LN containing the tissue marker clip will be the one to have the radioactive seed and Ink inserted. The seed will still be inserted, in the event the dye is not well-visualized. In both studies, the surgeon will attempt to find the LN by direct visualization and then confirm the appropriate LN has been removed by using the Gamma probe and intra-operative radiographs. If the seed is not within the tattooed node, the LN containing the seed will also be removed. All lymph nodes injected with Ink will be removed by the surgeon;no Ink-injected node remains in body.

Sponsors & Collaborators

  • The Ottawa Hospital

    lead OTHER

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-01-02
Primary Completion
2023-06-19
Completion
2023-06-19

Countries

  • Canada

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 NCT04136496 on ClinicalTrials.gov