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Introduction.Eribulin, an non-taxane microtubule inhibitor, has been registered in Russia for patients with locally advanced or metastatic breast cancer (mBC) who received at least one chemotherapy regimen for a advanced disease, previous therapy should include anthracyclines and taxanes in adjuvant or metastatic setting, except the patients who could not be prescribed these drugs. We present our experience with eribulin in real clinical practice in Moscow and the Moscow Region.Patients and methods. We conducted a retrospective analysis of the experience with the use of eribulin in Moscow and the Moscow Region in 202 patients with mBC from January 2016 to February 2017 to assess the effectiveness and safety of the drug. All patients received previous therapy with anthracyclines and taxanes for locally advanced and / or metastatic cancer. The average age of patients at the time of inclusion in the analysis was 5 years (28–81). The status of the general condition on the ECOG 0-1 scale was registered in 81.3 % (100 / 123) of patients, the status of ECOG 2-3 in 18.7 % (23 / 123) of patients. The median of the number of courses of chemotherapy with eribulin is 4 (2–17). Patients received eribulin in 1-7 chemotherapy lines for metastatic disease. The average number of affected organs is 2 (1–5).Results.Complete response (CR) was in 3 (2 %) patients. Partial response (PR) was in 24 (15.7 %) patients, stabilization of the disease – in 89 (58. 2 %). Progression of the disease was recorded in 37 (24.1 %) patients. The median of progression-free survival (PFS) on the therapy was 4.64 (95 % CI 2.97-6.87) months. Stabilization of the disease for more than 6 months was registered in 28 (18.3 %) patients. The most significant toxicity was neutropenia and polyneuropathy (21 patients (10.4 %) and 7 patients (3.5 %), respectively).Dose reduction due to neutropenia was required by 26 patients (12.9 %). The objective response rate (ORR) depended on the chemotherapy line: in 1-3 lines the efficacy of the treatment was higher: the ORR was 21.6 %, compared to the 4th and subsequent lines – 12.3 %, respectively. With HER2-positive mBC, eribulin showed clinically significant results in combination with trastuzumab.Conclusions.Our analysis confirms that eribulin has a predictable and manageable safety profile, is an effective drug for the treatment of patients with different subtypes of mBC in a real clinical setting.
Introduction.Eribulin, an non-taxane microtubule inhibitor, has been registered in Russia for patients with locally advanced or metastatic breast cancer (mBC) who received at least one chemotherapy regimen for a advanced disease, previous therapy should include anthracyclines and taxanes in adjuvant or metastatic setting, except the patients who could not be prescribed these drugs. We present our experience with eribulin in real clinical practice in Moscow and the Moscow Region.Patients and methods. We conducted a retrospective analysis of the experience with the use of eribulin in Moscow and the Moscow Region in 202 patients with mBC from January 2016 to February 2017 to assess the effectiveness and safety of the drug. All patients received previous therapy with anthracyclines and taxanes for locally advanced and / or metastatic cancer. The average age of patients at the time of inclusion in the analysis was 5 years (28–81). The status of the general condition on the ECOG 0-1 scale was registered in 81.3 % (100 / 123) of patients, the status of ECOG 2-3 in 18.7 % (23 / 123) of patients. The median of the number of courses of chemotherapy with eribulin is 4 (2–17). Patients received eribulin in 1-7 chemotherapy lines for metastatic disease. The average number of affected organs is 2 (1–5).Results.Complete response (CR) was in 3 (2 %) patients. Partial response (PR) was in 24 (15.7 %) patients, stabilization of the disease – in 89 (58. 2 %). Progression of the disease was recorded in 37 (24.1 %) patients. The median of progression-free survival (PFS) on the therapy was 4.64 (95 % CI 2.97-6.87) months. Stabilization of the disease for more than 6 months was registered in 28 (18.3 %) patients. The most significant toxicity was neutropenia and polyneuropathy (21 patients (10.4 %) and 7 patients (3.5 %), respectively).Dose reduction due to neutropenia was required by 26 patients (12.9 %). The objective response rate (ORR) depended on the chemotherapy line: in 1-3 lines the efficacy of the treatment was higher: the ORR was 21.6 %, compared to the 4th and subsequent lines – 12.3 %, respectively. With HER2-positive mBC, eribulin showed clinically significant results in combination with trastuzumab.Conclusions.Our analysis confirms that eribulin has a predictable and manageable safety profile, is an effective drug for the treatment of patients with different subtypes of mBC in a real clinical setting.
Aim. Eribulin is an active cytostatic, associated with a wide range of mechanisms of antitumor effects, but eribulin efficiency and safety in patients with breast cancer (BC), associated with cerebral metastases are still poorly understood. Materials and methods. We analyzed the combined Russian experience of eribulin application in BC patients associated with brain metastases; the analysis included 459 Russian women with advanced BC who had received at least 2 course of eribulin during the period from 2014 to 2018; 35 of 459 patients had brain metastases (40.0% - luminal HER2-negative subtype, 31.4% - triple negative subtype and 28.6%h - HER2-positive BC). The median age was 52 years (39 - 80 years of age). In most cases, the patient had two or more metastatic brain lesions (68.6%; the median was - 3); brain radiotherapy was used in 62.8% of patients before eribulin treatment and in 5.8% of patients was held stereotactic radiation therapy during eribulin chemotherapy. We analyzed the efficiency of eribulin application (the therapy continued until disease progression, the development of unacceptable toxicity, or impossibility to apply the drug for any other reason). Results. The results showed that clinical efficacy (objective response rate + stabilization of disease lasting for more than 6 months) was 48.6%: partial response - in 20% of patients and stabilization of disease - 62.9%; tumor growth control was in 82.9%. Median PFS in all group of patients with brain metastases was 4.1 months and was similar to median PFS in patients who received radiotherapy before eribulin treatment or without eribulin - 4.1 vs 3.47 months; p=0.798. Conclusions. The application of eribulin in BC patients with brain metastasis are absolutely justified, the drug demonstrates the efficiency in a retrospective analysis in a Russian population. The determination of the optimal algorithm for the treatment of patients with metastatic BC associated with brain metastasis requires a multidisciplinary approach and further research.
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