First-line trastuzumab utilization: Patterns of care and progression in the community setting
2016
e12009 Background: This study describes patterns of care and outcomes in metastatic breast cancer (MBC) patients treated with trastuzumab (T) within the US Oncology network. Methods: This retrospective study utilized data from US Oncology's iKnowMed EMR system. HER-2 (+) MBC patients who initiated a first-line regimen containing T between January 1, 2006 and July 31, 2007, were identified. Patients were divided into three treatment cohorts: A) those who discontinued T prior to disease progression; B) those who continued T following discontinuation of chemotherapy prior to progression; and C) those who received T monotherapy. Patients were followed through October 31, 2008, to measure treatment duration and observe progression (as defined as escalation to second-line therapy). The Kaplan Meier method/log-rank test were used to estimate and compare progression free survival (PFS) across cohorts. Results: We identified 139 patients receiving first-line therapy including T. The median age was 58 years and 84 ...
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