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Patient demographics according to HER-2 status
Numbers in parentheses represent ranges or percentages.
aEither 3+ by immunohistochemistry or 2+ by immunohistochemistry with FISH-proven HER-2 amplification.
bCutoff for positivity was set at ≥10% of cells staining positively for ER or PgR.
Abbreviations: ER, estrogen receptor; FISH, fluorescence in situ hybridization; HER-2, human epidermal growth factor receptor 2; PgR, progesterone receptor.
