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Optimal treatment of breast cancer in women older than 75 years: a Korea Breast Cancer Registry analysis
- Optimal treatment of breast cancer in women older than 75 years: a Korea Breast Cancer Registry analysis
- Jeon, Ye Won; You, Sun Hyong; Lee, Jong Eun; Youn, Hyun Jo; Lim, Woosung; Han, Jai Hong; Park, Chan Heun; Kim, Yong Seok
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- BREAST CANCER RESEARCH AND TREATMENT
- BREAST CANCER RESEARCH AND TREATMENT vol. 178, no. 3, pp. 693 - 701
- Breast neoplasms; Elderly women; Adjuvant treatment; Survival
- SCIE; SCOPUS
- Document Type
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- Purpose The aim of this study was to investigate the therapeutic efficacy of adjuvant modalities for elderly Asian breast cancer patients using population-based data from the Korean Breast Cancer Registry database. Methods We identified 53,582 patients who underwent curative surgery between January 2005 and December 2010. The primary end point was the comparison of overall survival between the administration or omission of adjuvant treatment modalities, including endocrine treatment, radiation therapy, and chemotherapy, in the elderly group (older than 75 years) compared with the control group (younger than 75 years). Results Of the 53,582 patients analyzed, the total number of elderly patients was 901 (1.7%), and the number of control patients was 52,681 (98.3%). Although elderly patients were found to have larger tumor sizes (p = 0.024) and higher pathological stages (p < 0.001) than the control group, elderly patients were less likely to undergo adjuvant treatment compared to the control group. However, use of endocrine treatment in elderly patients with HR-positive breast cancer is associated with improved overall survival (OS) (adjusted OR 0.417; 95% confidence interval [CI] 0.240-0.726; p = 0.002). Furthermore, chemotherapy was associated with a significant improvement in OS in patients with stage II and III breast cancer (adjusted OR 0.657; 95% CI 0.462-0.934; p = 0.019). Conclusion Endocrine treatment and chemotherapy for elderly patients are associated with improved OS. Therefore, personalized decision-making based on the potential survival benefit of adjuvant treatment modalities should be made with the careful counseling of all elderly patients with breast cancer.
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