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Efficacy of chemotherapy in metastatic male breast cancer patients: a retrospective study.

ABSTRACT: The role of chemotherapy in the treatment of metastatic male breast cancer patients remains unknown, and the only available evidence stem from small, retrospective series evaluating outdated drugs and/or regimens.In this retrospective study we evaluated the activity of polychemotherapy, consisting of three-drug (anthracycline-containing and anthracycline-free) regimens, as a first-line therapy for metastatic male breast cancer patients who had received at least one prior endocrine therapy.Fifty patients treated between 1978 and 2013 were included in the present analysis. Regarding best response, we recorded 1 (2%) complete response and 27 (54%) partial responses, for an overall response rate of 56% (95% CI, 42.2-69.8). Considering stable disease, the disease control rate was 84%. Median progression-free survival was 7.2 months (95% CI, 5.9-8.5), and median overall survival was 14.2 months (95% CI, 12.2-16.2). Albeit we observed some differences for all the outcomes explored when comparing anthracycline-containing and anthracycline-free regimens, they were not statistically significant.Chemotherapy, consisting in both anthracycline-containing and anthracycline-free regimens, showed encouraging antitumor activity in metastatic male breast cancer patients previously treated with endocrine therapy.

SUBMITTER: Di Lauro L

PROVIDER: S-EPMC4393564 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature

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Project description:The efficacy and safety of eribulin in patients with locally advanced or metastatic breast cancer has been demonstrated in phase III trials. However, as patients receiving eribulin in daily practice do not necessarily meet all the eligibility criteria of clinical trials, data for such patients are limited.We identified patients with locally advanced or metastatic breast cancer, treated with eribulin monotherapy between July 2011 and December 2015 at the National Cancer Center Hospital, Tokyo, Japan. Patients who would have met the following eligibility criteria from the EMBRACE trial were included in the eligible group, and the rest were included in the ineligible group: 1) Eastern Cooperative Oncology Group Performance status 0-2; 2) adequate function of principal organs; and 3) absence of active infection. We compared the relative dose intensity (RDI), tumor response, progression-free survival (PFS), overall survival (OS), and adverse events between the groups. Nominal and continuous values were compared using the Fisher's exact test and Mann-Whitney U test, respectively. Survival outcomes were determined using Kaplan-Meier estimation, and between-group differences were assessed using the log-rank test.Of the 203 patients included, 34 were classified into the ineligible group and 169 into the eligible group. Initial dose reduction and treatment discontinuation due to adverse events (AEs) were more common in the ineligible group (initial dose reduction: 23.5% in the ineligible group vs. 7.7% in the eligible group, p =?0.011; treatment discontinuation due to AEs: 11.8% vs. 3.0%, p =?0.045). However, RDI (66% vs. 71%, p =?0.130), response rate (15.6% vs. 18.1%, p =?1.000), PFS (3.7 months vs. 4.0 months, p =?0.913), OS (11.5 months vs. 16.1 months, p =?0.743), AEs requiring hospitalization (5.9% vs. 6.5%, p?=?1.000), and grade 3/4 AEs were similar in both groups. PFS, OS, AEs requiring hospitalization, and discontinuation due to AEs in the eligible group were comparable to those found in previous phase III trials.The safety and efficacy of eribulin monotherapy was demonstrated in a broader patient population than that eligible for clinical trials. Eribulin may be a treatment option in these patients with locally advanced or metastatic breast cancer, considering dose reduction and pre-existing dysfunctions.

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Efficacy of chemotherapy in metastatic male breast cancer patients: a retrospective study.

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