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De-escalating Axillary Surgery in Breast Cancer Patients in Nigeria

NCT06039956 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2024-08-22

No results posted yet for this study

Summary

In sub-Saharan Africa, breast cancer patients often present with advanced disease. In my previous research which evaluated over 600 patients from a prospective institutional data base, about 64% of women with a new diagnosis of breast cancer presented with locally advanced disease, including clinically positive axillary adenopathy. Our data also suggests that similar to African American women, triple negative breast cancer (TNBC) is common in Nigeria (43.5%).

The overall goal of the project is to evaluate the ability of existing technology in Nigeria to safely de-escalate axillary surgery in the management of locally advanced breast cancer patients. Currently, the standard-of-care for breast cancer patients with palpable axillary adenopathy (clinical N1 disease without evidence of distant metastases) at presentation in Nigeria is neoadjuvant systemic therapy followed by a modified radical mastectomy. This includes a complete axillary lymph node dissection (ALND). However, data from high-income countries however show that up to 85% of patients initially presenting with cN1 disease can be converted to cN0 (i.e. no palpable adenopathy) following NAC. These patients can thus safely undergo sentinel lymph node biopsy (SLNB) with up to 50% of these having pathologic complete response in the lymph nodes. In this patient population, both methylene blue and radio-isotope localization with Tc-99 sulphur colloid are required to ensure adequate performance of the SLNB to stage the axilla(i.e. false negative rate ≤10%). Although widely available in high-income countries, radio-isotope localization is not readily available in Nigeria. This project will explore an alternative to dual agent SLNB localization using readily available resources and multi-disciplinary collaboration in a lower-income environment. De-escalation of axillary surgery in high-income countries has significantly decreased operative morbidity and improved patient reported outcomes without compromising survival. However, context specific research and data from resource limited environments is needed to translate the benefit of de-escalation to sub-Saharan Africa.

Conditions

Interventions

PROCEDURE

Sentinel lymph Node Biopsy

The SLNB will be performed with 5 ml of undiluted methylene blue injected in equal aliquots, peri-tumoral, followed by a 5-minute massage prior to skin incision. Sentinel nodes will be defined as those that have uptake / visible blue staining or suspicious palpable nodes at the discretion of the operating surgeon. Sentinel nodes will be placed in formalin and sent separately. This will be followed by an immediate completion ALND, which will be similarly placed in formalin and sent separately from the SLNB specimen. Specimen radiographs will be performed on all specimens to confirm location of clip within SLNB vs. ALND specimens.

Sponsors & Collaborators

  • Obafemi Awolowo University

    collaborator OTHER

  • Nova Scotia Health Authority

    lead OTHER

Principal Investigators

  • Olalekan Olasenhinde, MD · Obafemi Awolowo University

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-11-01
Primary Completion
2027-05-31
Completion
2027-05-31

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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 NCT06039956 on ClinicalTrials.gov