Home CONTACT Neoplasma Ahead of print Neoplasma Vol.67, No.6, p.1400–1408, 2020

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Neoplasma Vol.67, No.6, p.1400–1408, 2020

Title: Objective response of first-line chemotherapy of triple-negative breast cancer translates into survival benefit: an analysis in an independent, prospective clinical trial and a real-world setting
Author: T. LI, Y. H. ZHU, J. ZHANG, B. Y. WANG, S. ZHANG, L. P. WANG, J. CAO, Z. H. TAO, J. XIE, X. C. HU

Abstract: This study sought to assess whether the objective response (OR, including complete response and partial response) of first-line chemotherapy can predict overall survival (OS) for patients with metastatic triple-negative breast cancer (mTNBC) in both clinical trial and a real-world setting. The survival predictable parameters were assessed in two independent cohorts, the training cohort of 236 patients as part of a phase 3 trial (CBCSG006, Trial registration number NCT0128762) and the validation cohort of 360 patients from the real-world setting. Univariable and multivariable Cox proportional hazard models were applied to explore associations with progression-free survival and OS in the training cohort and then in the validation cohort. OR (OR vs non-OR, HR, 0.438, P < 0.001) together with Eastern Cooperative Oncology Group (ECOG) performance status, disease-free survival, number of metastatic organ sites and platinum-based chemotherapy used as first-line chemotherapy were observed to be independent prognostic factors for progression-free survival (PFS), and OR (OR vs non-OR, HR, 0.602, P = 0.002) together with ECOG score, disease-free survival, number of metastatic organ sites and previous anthracycline and/or taxane treatment were observed to be independent predictive factors for OS in the training cohort.
These predictors were confirmed in the validation cohort. For OR and non-OR group, median OS was 23.72 and 13.83 months in the training cohort (HR, 0.637, P = 0.002), and 21.95 and 13.80 months in the validation cohort (HR, 0.608, P tus with any regimen of first-line chemotherapy in an independent prospective clinical trial and a real-world setting. Therefore, TNBC, not like other subtypes of breast cancer, may be in need of combination chemotherapy or intense chemotherapy to achieve a high response rate for survival.

Keywords: first-line chemotherapy; metastatic triple-negative breast cancer; objective response; overall survival
Published online: 13-Jul-2020
Year: 2020, Volume: 67, Issue: 6 Page From: 1400, Page To: 1408
doi:10.4149/neo_2020_200225N182


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