Abstract
INTRODUCTION: Niraparib (Zejula™) is a poly(ADP-ribose) polymerase inhibitor recently approved by the US Food and Drug Administration for the maintenance treatment of patients with recurrent platinum-sensitive epithelial ovarian, fallopian tube, or primary peritoneal cancer who are in a complete or partial response to platinum-based chemotherapy. The pivotal phase III clinical trial has shown improved progression-free survival in patients receiving niraparib compared with those receiving placebo.
PURPOSE: Since niraparib is administered orally, it is of interest to investigate the oral bioavailability (Fpo) of this novel compound, which is the aim of this study.
METHODS: Six patients received an oral therapeutic dose of 300 mg niraparib, followed by a 15-min intravenous infusion of 100 µg14C-niraparib with a radioactivity of approximately 100 nCi. The niraparib therapeutic dose was measured in plasma using a validated liquid chromatography-tandem mass spectrometry method, whereas the total14C-radioactivity and14C-niraparib plasma levels were measured by accelerator mass spectrometry and a validated high performance liquid chromatography assay with AMS.
RESULTS: The Fpoof niraparib was determined to be 72.7% in humans.
Original language | English |
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Pages (from-to) | 39-46 |
Number of pages | 8 |
Journal | Cancer Chemotherapy and Pharmacology |
Volume | 81 |
Issue number | 1 |
Early online date | 17 Oct 2017 |
DOIs | |
Publication status | Published - Jan 2018 |
Keywords
- Niraparib
- Bioavailability
- AMS
- LC-MS/MS
- Pharmacokinetics
- 14C-microtracer