Survival Outcomes of Residual Disease in Triple-Negative Breast Cancer (ReS-TNBC)

July 15, 2026 updated by: Asmaa Abdelfattah Kassem, Sohag University

Survival Outcomes of Residual Disease in Patients With Triple-Negative Breast Cancer Following Neoadjuvant Therapy: A Retrospective Cohort Study

Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer associated with a poor prognosis. Although neoadjuvant therapy improves outcomes in patients who achieve a pathological complete response, the presence of residual disease after treatment remains associated with an increased risk of recurrence and death. This retrospective cohort study aims to evaluate the survival outcomes of patients with residual disease following neoadjuvant therapy for TNBC and to assess the association between clinicopathological characteristics and survival outcomes, including disease-free survival and overall survival

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Sohag, Egypt
        • Sohag University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

Adult female patients with histologically confirmed triple-negative breast cancer (TNBC) who received neoadjuvant systemic therapy followed by definitive surgery and were treated at the study institution during the study period. Data will be collected retrospectively from medical records to evaluate the association between residual disease after neoadjuvant therapy and survival outcomes.

Description

Inclusion Criteria:

  • Female patients aged ≥18 years. Histologically confirmed triple-negative breast cancer (TNBC). Received standard neoadjuvant systemic therapy. Underwent definitive breast surgery after completion of neoadjuvant therapy. Availability of postoperative pathological assessment documenting residual disease or pathological complete response (pCR).

Complete clinical, pathological, treatment, and follow-up data available in the medical records.

Exclusion Criteria:

  • Patients with metastatic disease at initial diagnosis. Patients who did not complete neoadjuvant therapy or did not undergo definitive surgery.

Patients with incomplete or missing essential clinical, pathological, or follow-up data.

Patients with a history of another primary malignancy that could affect survival analysis.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Disease free survival
Time Frame: Up to 3 years
Up to 3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sohag University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2026

Primary Completion (Actual)

June 1, 2026

Study Completion (Actual)

July 1, 2026

Study Registration Dates

First Submitted

July 15, 2026

First Submitted That Met QC Criteria

July 15, 2026

First Posted (Actual)

July 20, 2026

Study Record Updates

Last Update Posted (Actual)

July 20, 2026

Last Update Submitted That Met QC Criteria

July 15, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • TNBC-RD-2026-001

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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