Concordance of the Biology of Primary Breast Carcinoma and the Biology of Recurrence .

January 27, 2026 updated by: Mera Samy George Samy, Sohag University

Concordance of the Biology of Primary Breast Carcinoma and the Biology of Recurrence , Retrospective Study.

the study will discuss the concordance of the biology of primary breast carcinoma and the biology of recurrence.

The study will be conducted at Department of Clinical Oncology, Sohag University Hospital and Sohag Cancer center, Sohag, Egypt.

including Patients diagnosed and treated between 2015 and 2025 and Data will be collected from medical records, pathology reports, and radiology reports.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

200

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

No

Sampling Method

Non-Probability Sample

Study Population

The study will be conducted at Department of Clinical Oncology, Sohag University Hospital and Sohag Cancer center, Sohag, Egypt.

Description

Inclusion Criteria:

  • Age more than18 years old at time of diagnosis of breast cancer.
  • Patients who had recurrent breast cancer following adjuvant treatment.
  • Biopsy was taken from the site of recurrence and biology was done.

Exclusion Criteria:

  • Patients with distant metastasis at time of presentation.
  • Patients diagnosed with double malignancy.
  • Patients with incomplete data records.
  • Recurrent breast cancer and biopsy difficult to be taken .

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
Rate of receptor discordance between primary and recurrent breast cancer.
Time Frame: 2015-2025
2015-2025

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 (Estimated)

March 1, 2026

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

October 1, 2026

Study Registration Dates

First Submitted

November 27, 2025

First Submitted That Met QC Criteria

November 27, 2025

First Posted (Actual)

December 10, 2025

Study Record Updates

Last Update Posted (Actual)

January 29, 2026

Last Update Submitted That Met QC Criteria

January 27, 2026

Last Verified

November 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Soh-Med--25-11-8MS

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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