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Stability Evaluation and Pharmacokinetic Profiling of Vepdegestrant in Rodents Using Liquid Chromatography–Tandem Mass Spectrometry

Published:27 August 2024 DOI: 10.3390/molecules29174048 PMID: 39274896
Hae-In Choi,?Jinyoung Choi,?Jin Woo Kim,?Yoon Ha Lee,?Kwan Hyung Cho,?Tae-Sung Koo

Abstract

Vepdegestrant (formerly ARV-471), a novel proteolysis-targeting chimera (PROTAC), targets estrogen receptor alpha (ERα) for degradation, offering a promising option to treat advanced ER-positive breast cancer. We developed and validated a sensitive and rapid liquid chromatography-tandem mass spectrometry method to quantify vepdegestrant in rodent plasma using bavdegalutamide (formerly ARV-110) as an internal standard. Plasma samples were prepared with protein precipitation using acetonitrile and analyzed using reverse-phase C18 columns and a mobile phase of 10 mM ammonium formate in distilled water and acetonitrile. The method demonstrated linearity from 1 to 1000 ng/mL in mouse and rat plasma, meeting all validation criteria, and successfully applied to in vivo and in vitro studies. Pharmacokinetic analysis revealed low-to-moderate clearance (313.3, 1053 mL/h/kg) and oral bioavailability (17.91, 24.12%) of vepdegestrant in mice and rats, respectively. It was unstable in buffer solutions across pH 2-10 and in phosphate-buffered saline (pH 7.4), likely due to adsorption, but remained stable in mouse and rat plasma at varying temperatures. In liver microsomes, vepdegestrant exhibited moderate stability in rats but was stable in mice, dogs, and humans. These findings enhance the understanding of pharmacokinetic properties of vepdegestrant supporting further development of PROTAC drugs.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
ARV-471 2229711-68-4 C45H49N5O4 73 suppliers Inquiry
ARV-471 2229711-68-4 C45H49N5O4 73 suppliers Inquiry
ARV-471 2229711-68-4 C45H49N5O4 73 suppliers Inquiry
ARV-471 2229711-68-4 C45H49N5O4 73 suppliers Inquiry
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