Correlation of HER2 levels expression through HER2 mRNA PCR vs immunohistochemistry (IHC) in hormone receptor positive (HR+)/HER2 negative (HER2-) early breast cancer.

Clin Transl Oncol · 2026 · PMC12855316 · PMID 40833671

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did not reach statistical significanceno p-value reported

Median Oncotype DX recurrence scores also rose slightly across HER2 IHC groups but did not reach statistical significance.

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