ArticleBiomedical chromatography : BMC2025
Quantitation of Tuvusertib (M1774) in Human Plasma by LC-MS/MS.
Article in Biomedical chromatography : BMC, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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9 authors.
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Abstract
Ataxia-telangiectasia and Rad3-related (ATR) protein kinase is an essential regulator of the DNA damage response (DDR) at stalled and collapsed replication forks. Tuvusertib (M1774) is a selective, orally available small molecule ATR inhibitor currently in preclinical and clinical development for cancer treatment. This study presents a robust and simple 5-min assay designed for the quantification of single agent tuvusertib in human plasma utilizing liquid chromatography tandem mass spectrometry (LC-MS/MS). A 20 μL volume of plasma was subjected to protein precipitation, followed by chromatographic separation using a Phenomenex Synergi Polar-RP (4 μm, 2.1 × 50 mm) and a gradient mobile phase system consisting of 0.1% formic acid in both water and acetonitrile during a 4-min run time. Mass spectrometric detection was achieved using a SCIEX 6500+ tandem mass spectrometer with electrospray positive-mode ionization. With a stable isotopic internal standard, our assay met the criteria outlined by the Food and Drug Administration guidance for bioanalytical method validation, demonstrating robust performance within the range from 5 to 5000 ng/mL. This assay will support ongoing and future clinical studies by defining tuvusertib pharmacokinetics.
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