PlumX Metrics
Embed PlumX Metrics

Low Estrogen Receptor (ER)-Positive Breast Cancer and Neoadjuvant Systemic Chemotherapy

American Journal of Clinical Pathology, ISSN: 1943-7722, Vol: 150, Issue: 1, Page: 34-42
2018
  • 58
    Citations
  • 0
    Usage
  • 47
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

Objectives Pathologic complete response (pCR) rate after neoadjuvant chemotherapy was compared between 141 estrogen receptor (ER)-negative (43%), 41 low ER+ (13%), 47 moderate ER+ (14%), and 98 high ER+ (30%) tumors. Methods Human epidermal growth factor receptor 2-positive cases, cases without semiquantitative ER score, and patients treated with neoadjuvant endocrine therapy alone were excluded. Results The pCR rate of low ER+ tumors was similar to the pCR rate of ER- tumors (37% and 26% for low ER and ER- respectively, P =.1722) but significantly different from the pCR rate of moderately ER+ (11%, P =.0049) and high ER+ tumors (4%, P <.0001). Patients with pCR had an excellent prognosis regardless of the ER status. In patients with residual disease (no pCR), the recurrence and death rate were higher in ER- and low ER+ cases compared with moderate and high ER+ cases. Conclusions Low ER+ breast cancers are biologically similar to ER- tumors. Semiquantitative ER H-score is an important determinant of response to neoadjuvant chemotherapy.

Bibliographic Details

Landmann, Alessandra; Farrugia, Daniel J; Zhu, Li; Diego, Emilia J; Johnson, Ronald R; Soran, Atilla; Dabbs, David J; Clark, Beth Z; Puhalla, Shannon L; Jankowitz, Rachel C; Brufsky, Adam M; Ahrendt, Gretchen M; McAuliffe, Priscilla F; Bhargava, Rohit

Oxford University Press (OUP)

Medicine

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know