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- W2904394271 abstract "Abstract Purpose: To assess talazoparib activity in germline BRCA1/2 mutation carriers with advanced breast cancer. Patients and Methods: ABRAZO (NCT02034916) was a two-cohort, two-stage, phase II study of talazoparib (1 mg/day) in germline BRCA mutation carriers with a response to prior platinum with no progression on or within 8 weeks of the last platinum dose (cohort 1) or ≥3 platinum-free cytotoxic regimens (cohort 2) for advanced breast cancer. Primary endpoint was confirmed objective response rate (ORR) by independent radiological assessment. Results: We enrolled 84 patients (cohort 1, n = 49; cohort 2, n = 35) from May 2014 to February 2016. Median age was 50 (range, 31–75) years. Triple-negative breast cancer (TNBC) incidence was 59% (cohort 1) and 17% (cohort 2). Median number of prior cytotoxic regimens for advanced breast cancer was two and four, respectively. Confirmed ORR was 21% [95% confidence interval (CI), 10–35; cohort 1] and 37% [95% CI, 22–55; cohort 2]. Median duration of response was 5.8 and 3.8 months, respectively. Confirmed ORR was 23% (BRCA1), 33% (BRCA2), 26% (TNBC), and 29% (hormone receptor–positive). The most common all-grade adverse events (AE) included anemia (52%), fatigue (45%), and nausea (42%). Talazoparib-related AEs led to drug discontinuation in 3 (4%) patients. In an exploratory analysis, longer platinum-free interval was associated with higher response rate in cohort 1 (0% ORR with interval <8 weeks; 47% ORR with interval >6 months). Conclusions: Talazoparib exhibited promising antitumor activity in patients with advanced breast cancer and germline BRCA mutation." @default.
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- W2904394271 date "2019-05-01" @default.
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- W2904394271 title "A Phase II Study of Talazoparib after Platinum or Cytotoxic Nonplatinum Regimens in Patients with Advanced Breast Cancer and Germline <i>BRCA1/2</i> Mutations (ABRAZO)" @default.
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- W2904394271 doi "https://doi.org/10.1158/1078-0432.ccr-18-1891" @default.
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