An observational study in HER2 Status in Breast Cancer, sponsored by Sohag University. Not yet recruiting at 1 site in Egypt. Open to female participants aged 26 Years to 85 Years. Per ClinicalTrials.gov, last updated 2026-08-12.
Sponsored by Sohag University · Observational
HER2 status is no longer simply classified as a positive or negative. It is now evaluated on a score from 0 to 3+, where score 3+ indicates HER2-positive disease because it shows strong, complete circumferential membranous staining. In the HER2-negative spectrum, score 1+ and score 2+ without gene amplification are classified as HER2-low, while score 0 involves both HER2-null cases with no membrane staining and HER2-ultralow cases with faint or weak incomplete membranous staining in ≤10%, of tumor cells. In addition, ISH can be used to determine HER2 gene amplification status. The emergence of HER2-low and also HER2-ultralow concepts has challenged the traditional binary framework and increased the need for collective reporting. As a result, careful interpretation of delicate staining patterns, reproducible scoring and appropriate use of complementary testing methods are now central to accurate HER2 classification in both primary and metastatic breast cancer.
The study population includes female patients with histopathologically confirmed breast cancer diagnosed at Sohag Oncology center during the study period (2025-2026). Archived formalin-fixed paraffin-embedded tissue blocks and corresponding pathology records will be retrospectively reviewed to evaluate HER2 status. Only cases meeting the eligibility criteria will be included.
Exclusion Criteria:
Female patients with histopathologically confirmed breast cancer diagnosed at Sohag Oncology center during 2025-2026. Archived formalin-fixed paraffin-embedded tissue samples and pathology records will be retrospectively reviewed to evaluate HER2 status by immunohistochemistry (IHC)
HER2 status in breast cancer
To evaluate the HER2 status among breast cancer patients diagnosed at Sohag Oncology center using immunohistochemistry (IHC) and, when indicated, in situ hybridization (ISH), and to describe the distribution of HER2 expression.
Time frame: 2025/2026
Plan to share: Undecided
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This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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Sohag University