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

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

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07275203

Enrollment

200

Registered

2025-12-10

Start date

2026-03-01

Completion date

2026-10-01

Last updated

2026-01-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Carcinoma

Brief summary

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.

Interventions

OTHERNo intervention

No intervention

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

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 .

Design outcomes

Primary

Measure	Time frame
Rate of receptor discordance between primary and recurrent breast cancer.	2015-2025

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026