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. 2022 Jul 4;12:865292. doi: 10.3389/fonc.2022.865292

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Copyright © 2022 Brufsky, Liu, Li, McRoy and Layman

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Kaplan-Meier curves of real-world progression-free survival and overall survival in patients with liver metastasis. Analysis of rwPFS (A) and OS (B) adjusted for demographic and clinical variables; number of patients at risk are shown. LET, letrozole; OS, overall survival; PAL, palbociclib; rwPFS, real-world progression-free survival. *Hazard ratios were estimated by multivariate Cox regression models adjusted for baseline demographic and clinical variables.