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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (10): 1147-1152.doi: 10.12092/j.issn.1009-2501.2018.10.010

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Pharmacokinetics of the metabolites of abivertinib in Chinese patients with advanced NSCLC in a single and multiple dose group

WANG Lu1, ZHENG Xin2, WANG Weicong2, ZHAO Hongyun3, MA Yuxiang3, ZHANG Li3, HU Pei2, JIANG Ji2   

  1. 1 Phase 1 Clinical Trial Unit, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China; 2 Clinical Pharmacology Research Center, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 10032, China; 3 Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou 510060, Guangdong, China
  • Received:2018-09-21 Revised:2018-09-30 Online:2018-10-26 Published:2018-10-25

Abstract:

AIM: To evaluate the pharmacokinetics of the metabolites of abivertinib in Chinese patients with advanced nonsmall-cell lung cancer (NSCLC) after single and multiple dose of abivertinib maleate capsules. METHODS: Seven Chinese patients with advanced NSCLC were administered a single oral dose of 350 mg of abivertinib maleate capsule. After a washout period, three of them were administered 350 mg of abivertinib QD for 28 days, four were administered 175 mg of abivertinib twice a day for 28 days. The plasma concentrations of five metabolites of abivertinib were assayed with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Pharmacokinetic parameters were calculated with WinNonlin ver. 6.4. RESULTS: Among these five metabolites, the exposure of MII-2, a cysteine conjugate, was the highest, which was 3.32%-5.57% of the exposure of the parent drug. The exposures of M1 (N-demethylation) and M2 (N-oxidation) were 2.14%-4.24% and 0.56%-1.00% of the exposure of the parent drug, respectively. The exposures of M4 (N-dealkylation) and MII-1 (acetylcysteine conjugate) were low, most of the concentrations of MII-1 were blow the lower limit of quantitation (0.1 ng/mL). CONCLUSION: The exposures of the five metabolites monitored were no more than 10% of the exposure of the parent drug.

Key words: abivertinib, metabolite, pharmacokinetics, EGFR-TKI, liquid chromatography-tandem mass spectrometry

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