Cited by 23Pharmacogenetics and Drug MetabolismLung Cancer Treatments and MutationsDrug Transport and Resistance Mechanisms

Metabolic disposition of the EGFR covalent inhibitor furmonertinib in humans

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Meng, Jian, Zhang, Hua, Bao, Jing-jing, Chen, Zhen-dong, Liu, Xiao-yun, Zhang, Yi-fan, Jiang, Yong, Miao, Li-yan +1 more·2022·Acta Pharmacologica Sinica

Abstract

Furmonertinib was designed for the treatment of non-small cell lung cancer (NSCLC) patients with EGFR T790M mutation. In this study, we investigated the metabolic disposition and mass balance in humans and tissue distribution in rats. After a single oral administration of 97.9 μCi/81.5 mg [14 C]-furmonertinib mesylate to six healthy male volunteers, the absorption process of furmonertinib was fast with a t max of total plasma radioactivity at 0.75 h. Afterward, furmonertinib was extensively metabolized, with the parent drug and active metabolite AST5902 accounting for 1.68% and 0.97% of total radioactivity in plasma. The terminal t 1/2 of total radioactivity in plasma was as long as 333 h, suggesting that the covalent binding of drug-related substances to plasma proteins was irreversible to a great extent. The most abundant metabolites identified in feces were desmethyl metabolite (AST5902), cysteine conjugate (M19), and parent drug (M0), which accounted for 6.28%, 5.52%, and 1.38% of the dose, respectively. After intragastric administration of 124 μCi/9.93 mg/kg [14 C]-furmonertinib to rats, drug-related substances were widely and rapidly distributed in tissues within 4 h. The concentration of total radioactivity in the lung was 100-fold higher than that in rat plasma, which could be beneficial to the treatment of lung cancer. Mass balance in humans was achieved with 77.8% of the administered dose recovered in excretions within 35 days after administration, including 6.63% and 71.2% in urine and feces, respectively. In conclusion, [14 C]-furmonertinib is completely absorbed and rapidly distributed into lung tissue, extensively metabolized in humans, presented mostly as covalent conjugates in plasma, and slowly eliminated mostly via fecal route.

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Authors
Meng, J., Zhang, H., Bao, J.-J., Chen, Z.-D., Liu, X.-Y., Zhang, Y.-F., Jiang, Y., Miao, L.-Y., & Zhong, D.-F.
Affiliations
  • Chinese Academy of Sciences (CN)
  • First Affiliated Hospital of Soochow University (CN)
Venue
Acta Pharmacologica Sinica
Published
2021-04-29
Volume
43
Issue
2
Pages
494-503
ISSN
  • 0253-9756 (ISSN-L)
  • 1671-4083
  • 1745-7254
OpenAlex
W3157551671
Cited by
23
References
17
Citations by year
2026: 5 · 2025: 9 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 2
FWCI
2.06
Type
journal article
Language
en
Open access
Locations
  • Acta Pharmacologica Sinica (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (81521005)
  • Chinese Academy of Sciences (XDA12050306)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
furmonertinib, drug metabolism, mass balance, tissue distribution, non-small cell lung cancer, T790M mutation, plasma protein binding, cysteine conjugates, fecal excretion, pharmacokinetics
MeSH terms
Administration, Oral, Adult, Animals, Antineoplastic Agents, Chromatography, High Pressure Liquid, Female, Humans, Indoles, Male, Pyridines, Pyrimidines, Tissue Distribution, Rats, Sprague-Dawley, Rats, ErbB Receptors

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