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Objective: There are some studies about the significance of the peripheral blood parameters in breast cancer. However, there is very few studies about prognostic importance of peripheral blood parameters in human epidermal growth factor-2 receptor (Her-2) positive breast cancer. We aimed to evaluate whether prognostic significance of peripheral blood parameters in patients Her-2 positive metastatic breast cancer with treated Pertuzumab, Trastuzumab, Docetaxel (PTD)
Material and Methods: We included 56 patients with Her-2 positive metastatic breast cancer patients who were treated with PTD. We recorded patients' clinical,demographic features and we obtained peripheral blood parameters such as neutrophil-lymphocyte ratio (NLR), red blood cell distribution (RDW), mean platelet volume (MPV), lymphocyte, neutrophil after the sixth cycle of the treatment and before the treatment. We separated the patients into two groups depending on the progression status. Progression-free survival was analyzed by Kaplan-Meier statistical analysis.
Results: Patients mean age was 50.7. Progression was detected in 34 patients. When we explored and compared hemogram parameters in the groups before the treatment, there wasn’t statistically any significant difference between these parameters such as neutrophil, lymphocyte, neutrophil to lymphocyte ratio, mean platelet volume, red blood cell width. In the progressive group;,while pretreatment NLR was 3.83, it was detected 2.72 after six cycle treatment and difference was meaningful ( p: 0.043). The pretreamtent MPV was 8.63, and It was 8.15 after six cycle treatment, and difference between these counts was statistically important (p: 0.006). PFS was 18.0 months in the study group.
Conclusion: Peripheral blood parameters were not statistically significant in both group comparisons. In the progression group, the difference between NLR and MPV count was statistically significant after the sixth cycle of the treatment and before the treatment.
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