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      Preoperative Radiotherapy Does Not Change the Existing Treatment Paradigm in Stage III Breast Cancer


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          Introduction: Radiotherapy (RT) plays an indispensable role in postoperative breast cancer treatment. This study aimed to assess the feasibility of preoperative RT for stage III breast cancer by comparing preoperative RT with postoperative RT in terms of overall survival (OS). Methods: Based on the information in the Surveillance, Epidemiology, and End Results database from 2000 to 2018, patients with stage III breast cancer who had undergone radical surgery and RT were divided into two groups: a preoperative RT group and a postoperative RT group. OS was calculated using Kaplan-Meier analysis. The Cox proportional hazards model was used to evaluate independent factors associated with OS. Propensity score matching (PSM) was used to balance stratification factors. Results: In total, 9,605 patients were enrolled, of whom 9,456 received postoperative RT and 149 received preoperative RT. After a median follow-up of 72 months, postoperative RT was found to be superior to preoperative RT in terms of OS ( p < 0.000). Compared to the postoperative RT group, the preoperative RT group showed a significantly higher risk of overall mortality without PSM in univariate (OS: hazard ratio [HR] = 1.653, 95% confidence interval [CI]: 1.288–2.123, p < 0.000) and multivariate analyses (OS: HR = 1.409, 95% CI: 1.096–1.810, p = 0.007). After PSM, the OS of the postoperative RT group was superior to the OS in the preoperative RT group ( p = 0.041). Compared with the postoperative RT group, the preoperative RT group showed a significantly higher risk of overall mortality without PSM in univariate (HR = 1.312, 95% CI: 1.010–1.704, p = 0.042) and multivariate analyses (HR = 1.466, 95% CI: 1.127–1.906, p = 0.004). Conclusion: Preoperative RT does not improve OS in patients with stage III breast cancer and has a worse prognosis. Preoperative RT has not changed the existing treatment paradigm in the current therapeutic context for patients with stage III breast cancer.

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          Most cited references39

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          Pertuzumab plus trastuzumab in combination with standard neoadjuvant anthracycline-containing and anthracycline-free chemotherapy regimens in patients with HER2-positive early breast cancer: a randomized phase II cardiac safety study (TRYPHAENA).

          Pertuzumab (P) combined with trastuzumab (H)-based chemotherapy improves efficacy in early and advanced HER2-positive breast cancer. We assessed the tolerability, with particular focus on cardiac safety, of H and P with chemotherapy in the neoadjuvant treatment of HER2-positive early breast cancer. In this multicenter, open-label phase II study, patients with operable, locally advanced, or inflammatory breast cancer were randomized 1 : 1 : 1 to receive six neoadjuvant cycles q3w (Arm A: 5-fluorouracil, epirubicin, cyclophosphamide [FEC] + H + P ×3 → docetaxel [T] + H + P ×3; Arm B: FEC ×3 → T + H + P ×3; Arm C: T + carboplatin + H [TCH]+P ×6). pCR was assessed at surgery and adjuvant therapy given to complete 1 year of H. Two hundred twenty-five patients were randomized. During neoadjuvant treatment, two patients (2.7%; Arm B) experienced symptomatic left ventricular systolic dysfunction (LVSD) and 11 patients (Arm A: 4 [5.6%]; Arm B: 4 [5.3%]; Arm C: 3 [3.9%]) had declines in left ventricular ejection fraction of ≥10% points from baseline to <50%. Diarrhea was the most common adverse event. pCR (ypT0/is) was reported for 61.6% (Arm A), 57.3% (Arm B), and 66.2% (Arm C) of patients. The combination of P with H and standard chemotherapy resulted in low rates of symptomatic LVSD.
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                Author and article information

                S. Karger AG
                March 2024
                25 September 2023
                : 102
                : 4
                : 310-317
                [ ]Department of Breast Surgery, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
                Author notes
                *Hui Liu, liuhui2013_2018@163.com
                533858 Oncology 2024;102:310–317
                © 2023 S. Karger AG, Basel
                : 28 February 2023
                : 23 August 2023
                Page count
                Figures: 2, Tables: 2, Pages: 8
                This research did not receive any specific grant from funding agency in the public, commercial, or not-for-profit sectors.
                Clinical Study

                Prognosis,Breast cancer,Overall survival,Preoperative radiotherapy
                Prognosis, Breast cancer, Overall survival, Preoperative radiotherapy


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