期刊
BRITISH JOURNAL OF CANCER
卷 123, 期 8, 页码 1223-1227出版社
SPRINGERNATURE
DOI: 10.1038/s41416-020-1009-1
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The latest ASCO/CAP guideline has recommended to report oestrogen receptor (ER) low cases (ERlo; 1-10%) as ER low positive category, prompting us to compare the clinicopathologic features, biomarkers, survival and treatment of the ER(lo)cases with other subgroups (ER negative (ERneg) and ER high (ERhi)). ER(lo)cases revealed more similar clinicopathologic and biomarker profiles (including younger age, larger tumour, high proliferation, HER2 and basal markers expression) to ER(neg)than ER(hi)cancers. The ER(lo)cases receiving hormonal therapy showed a similarly poor outcome as ER(neg)cancers. However, majority of ER(lo)cases were downstaged to stage I in the 8th AJCC pathological prognostic staging, highlighting a risk of potential under treatment. Overall, our data highlighted the differences of ER(lo)from other ER(pos)cases and their management should be considered separately.
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