The frequency of low HER2 expression in breast cancer and a comparison of prognosis between patients with HER2-low and HER2-negative breast cancer by HR status.
Nanae HorisawaYayoi AdachiDaiki TakatsukaKazuki NozawaYuka EndoYuri OzakiKayoko SuginoAyumi KataokaHaruru KotaniAkiyo YoshimuraMasaya HattoriMasataka SawakiHiroji IwataPublished in: Breast cancer (Tokyo, Japan) (2021)
HER2-low patients did not have a significantly different prognosis than HER2-0 patients, regardless of HR status. However, we should consider tailoring therapies for patients with HRE2-low early breast cancer according to their HR status.