Receptor discordance between primary tumors and nodal metastases and correlation with the 21-gene recurrence score in early-stage, estrogen receptor-positive, node-positive breast cancer.

Breast Cancer Res Treat · 2026 · PMC13287169 · PMID 42329472

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a nonsignificant trendno p-value reported

There was a nonsignificant trend toward higher RS and an observed ER or HER2-receptor discordance.

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