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Chu Z, Xue M, Xiong S. Development and Validation of an LC-MS/MS Method for Quantitative Determination of EAI045, A Novel EGFR Inhibitor, in Rat Plasma. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666190206125557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
EAI045 is the fourth-generation epidermal growth factor receptor tyrosine
kinase inhibitor (EGFR TKI), which can overcome acquired resistance to the third-generation EGFR
TKIs and is the first allosteric inhibitor that targets T790M and C797S EGFR mutants.
Methods:
A rapid and sensitive LC-MS/MS method was established and validated for the quantification
of EAI045 in rat plasma. Chromatographic separation was carried out at 25°C on a Hypersil GOLD C18
column (50 mm × 2.1 mm, 3 μm) and eluted on a gradient mobile phase of water (containing 0.1% formic
acid) and acetonitrile at a flow rate of 0.5 mL/min. The mass spectrometer was operated in the positive
ESI mode and selected reaction monitoring mode.
Results:
The assay was validated over a concentration range of 1.0 - 1000 ng/mL for EAI045 with a
lower limit of quantification (LLOQ) of 1.0 ng/mL. The intra- and inter-batch accuracy for the EAI045
ranged from 92.25% to 97.18% and 95.94% to 102.69%, and the intra- and inter-batch precision for the
EAI045 ranged from 1.41% to 4.57% and 5.18% to 6.37%, respectively. The extraction recovery, matrix
effect and stability met all requirements of the guidelines for bioanalytical method validation.
Conclusion:
The rapid and sensitive LC-MS/MS method was successfully applied in a pharmacokinetic
study of EAI045 following oral administration (5 mg/kg) to rats.
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Affiliation(s)
- Zixuan Chu
- Institute of Materia Medica, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250062, China
| | - Mingxing Xue
- Shandong Yantong Pharmaceutical Technology Co., Ltd, Jinan 250014, China
| | - Shan Xiong
- Institute of Materia Medica, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250062, China
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