• 2022-09
  • 2022-08
  • 2022-07
  • 2022-05
  • 2022-04
  • 2021-03
  • 2020-08
  • 2020-07
  • 2018-07
  • br Supplementary data br Disclosure br The authors


    Supplementary data
    The authors report no proprietary or commercial interest in any product mentioned or concept discussed in this article.
    2. Early Breast Cancer Trialists’ Collaborative G. Effects of chemotherapy and hormonal therapy for early breast cancer on recurrence and 15-year survival: an overview of the randomised trials. Lancet. 2005;365:1687e1717.
    3. Curigliano G, Burstein HJ, P Winer E, et al. De-escalating and escalating treatments for early-stage breast cancer: the St. Gallen international expert consensus conference on the primary therapy of early breast cancer 2017. Ann Oncol. 2017;28:1700e1712.
    7. Gluz O, Liedtke C, Huober J, et al. Comparison of prognostic and predictive impact of genomic or central grade and
    8. Goldhirsch A, Ingle JN, Gelber RD, et al. Thresholds for therapies: highlights of the St Gallen International Expert Consensus on the primary therapy of early breast cancer 2009. Ann Oncol. 2009;20:1319e1329.
    9. Henry NL, Somerfield MR, Abramson VG, et al. Role of patient and disease factors in adjuvant systemic therapy decision making for early-stage, operable breast cancer: American society of clinical oncology endorsement of cancer care ontario guideline recommendations. J Clin Oncol. 2016;34:2303e2311.
    10. Burstein HJ, Lacchetti C, Anderson H, et al. Adjuvant endocrine therapy for women with hormone receptor-positive breast cancer: American society of clinical oncology clinical practice guideline update on ovarian suppression. J Clin Oncol. 2016;34:1689e1701. 
    11. Yao Y, Cao M, Fang H, Xie J. Breast cancer in 30-year-old or younger patients: clinicopathologic characteristics and prognosis. World J Surg Oncol. 2015;13:38.
    12. Young adult breast cancer patients have a poor prognosis independent of prognostic clinicopathological factors: a study from the Japanese Breast Cancer Registry. Breast Cancer Res Treat. 2016;160:163e172.
    13. Collins LC, Marotti JD, Gelber S, et al. Pathologic features and molecular Gly-Pro-pNA by patient age in a large cohort of young women with breast cancer. Breast Cancer Res Treat.
    16. Dombernowsky P, Andersen JA, Andersen KW, et al. [Adjuvant chemotherapy in premenopausal and menopausal high-risk patients with breast cancer. 4. Results of the DBCG (Danish Breast Cancer Cooperative Group) 77B study]. Ugeskr Laeger. 1991;153:2280e2283.
    17. Partridge AH, Rumble RB, Carey LA, et al. Chemotherapy and targeted therapy for women with human epidermal growth factor receptor 2-negative (or unknown) advanced breast cancer: American Society of Clinical Oncology Clinical Practice Guideline. J Clin Oncol. 2014;32:3307e3329.
    18. Nielsen TO, Jensen MB, Burugu S, et al. High-risk premenopausal luminal a breast cancer patients derive no benefit from adjuvant cyclophosphamide-based chemotherapy: results from the DBCG77B clinical trial. Clin Cancer Res. 2017;23:946e953.
    19. Ejlertsen B, Mouridsen HT, Jensen MB, et al. Cyclophosphamide, methotrexate, and fluorouracil; oral cyclophosphamide; levamisole; or no adjuvant therapy for patients with high-risk, premenopausal breast cancer. Cancer. 2010;116:2081e2089.
    21. Blows FM, Driver KE, Schmidt MK, et al. Subtyping of breast cancer by immunohistochemistry to investigate a relationship between subtype and short and long term survival: a collaborative analysis of data for 10,159 cases from 12 studies. Plos Med. 2010;7:e1000279.
    22. Prat A, Cheang MC, Martin M, et al. Prognostic significance of progesterone receptor-positive tumor cells within immunohistochemically defined luminal A breast cancer. J Clin Oncol. 2013;31:203e209.
    23. Park S, Park BW, Kim TH, et al. Lack of either estrogen or progesterone receptor expression is associated with poor survival outcome among luminal A breast cancer subtype. Ann Surg Oncol. 2013;20:1505e1513.
    24. Liu S, Chia SK, Mehl E, et al. Progesterone receptor is a significant factor associated with clinical outcomes and effect of adjuvant tamoxifen therapy in breast cancer patients. Breast Cancer Res Treat. 2010;119:53e61.