Abstract
Trastuzumab has been the standard treatment in first-line treatment of HER-2-positive advanced breast cancer (H2ABC). This study explored whether the delayed and repeated use of trastuzumab could influence overall survival (OS). A total of 128 patients with H2ABC who had received at least one line of trastuzumab-based regimens were included. The primary endpoint was OS defined as from the date of first diagnosis of H2ABC to death. The median OS of initiating trastuzumab in first-line group (n = 56), in the second-line group (n = 32), and the third- or more-line group (n = 40) was 40.6 m, 39.5 m, and 38 m, respectively (P = 0.867). For patients who had received over one line of trastuzumab (n = 46), the median OS was 44 m, and for those receiving only one line (n = 67), it was 27.6 m (P = 0.059). The delayed use of trastuzumab has no negative effect on the OS of patients with H2ABC. There is a trend of improved OS over the repeated use of trastuzumab.
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Acknowledgment
This study was funded by the National “Eleventh Five” technology major project (2008ZX09312-002) and the Research Award Fund for Outstanding Young researchers in Sun Yat-sen Cancer Center. We thank lecturer Yu-Wen Du from medical college of Sun Yat-Sen University for her generous help in manuscript revision.
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Yan-**a Shi and Yu-Ting Tan contributed equally to this work.
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Shi, YX., Tan, YT., Yuan, ZY. et al. Comparison of overall survival between the early use and delayed use of Trastuzumab therapy groups: a retrospective analysis of 128 patients with HER-2-positive advanced breast cancer. Med Oncol 29, 39–47 (2012). https://doi.org/10.1007/s12032-010-9798-3
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DOI: https://doi.org/10.1007/s12032-010-9798-3