Development and validation of a liquid chromatography-tandem mass spectrometry assay for the quantification of lurbinectedin in human plasma and urine

L van Andel, H Rosing, R Lubomirov, P Avilés, S Fudio, M M Tibben, L Nan-Offeringa, J H M Schellens, J H Beijnen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Lurbinectedin is a novel highly selective inhibitor of RNA polymerase II triggering caspase-dependent apoptosis of cancerous cells. This article describes the development and validation of a liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay to quantify lurbinectedin in human plasma and urine. Plasma samples were pre-treated with 1 M aqueous ammonia after which they were brought onto supported liquid extraction (SLE) columns. Lurbinectedin was eluted from the columns using tert-butyl methyl ether (TBME). Urine was first diluted in plasma and lurbinectedin was extracted from this matrix by liquid-liquid extraction using TBME. Samples were measured by LC-MS/MS in the positive electron ion spray mode. The method was linear over 0.1-100 ng/mL and 1-1000 ng/mL in plasma and urine, respectively, with accuracies and precisions within ±15% (20% for LLOQ) and below 15% (20% for LLOQ), respectively. The method was developed to support a mass balance study in which patients received a dose of 5 mg lurbinectedin.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalJournal of Pharmaceutical and Biomedical Analysis
Volume158
DOIs
Publication statusPublished - 5 Sept 2018

Keywords

  • Lurbinectedin
  • PM01183
  • HPLC–MS/MS
  • Plasma
  • Urine
  • Bioanalysis

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