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- W3204278108 abstract "Aims To correlate the ‘Residual Cancer Burden’ (RCB) index with overall survival (OS) and disease-free survival (DFS) in women undergoing neoadjuvant chemotherapy at the Cancer Institute of the State of São Paulo. Methods We analysed the medical records of patients with breast cancer who underwent neoadjuvant chemotherapy and breast surgery, from 2011 to December 2017. Variables analysed were age, clinical and pathological staging, molecular subtype, number of recurrences or metastases, number of deaths, value and class of the RCB index. We used the Kaplan-Meier and the log-rank statistics to evaluate the possible association between RCB and OS and DFS. A regression model was used to determine the independent association of the RCB with the outcomes controlling for confounding factors. Results 347 patients were included in the analysis with a mean age of 49.39 years. Initial clinical staging was T3 in 57.9% of patients and 43.8% of patients had N1 axillary status. Survival analysis showed a statistically significant better prognosis for the RCB 0 (pCR) subgroup compared with RCB 1, 2 and 3 (log rank p=0.01). In a multivariate analysis, only the RCB classification showed a statistically significant correlation with DFS (RCB 1, HR 6.9, CI 1.9 to 25.4, p=0.004; RCB 2, HR 4.2, CI 1.6 to 10.8, p=0.03; and RCB 3, HR 7.6, CI 2.76 to 20.8, p=0.00). Conclusion We demonstrated a positive and significant relationship between the RCB index and the risk of relapse and death." @default.
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- W3204278108 date "2021-10-07" @default.
- W3204278108 modified "2023-10-15" @default.
- W3204278108 title "Validation of the Residual Cancer Burden Index as a prognostic tool in women with locally advanced breast cancer treated with neoadjuvant chemotherapy" @default.
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- W3204278108 doi "https://doi.org/10.1136/jclinpath-2021-207771" @default.
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