Low serum concentrations of bevacizumab and nivolumab owing to excessive urinary loss in patients with proteinuria: a case series

Takashi Masuda, Taro Funakoshi, Takahiro Horimatsu, Shinya Yamamoto, Takeshi Matsubara, Sho Masui, Shunsaku Nakagawa, Yasuaki Ikemi, Motoko Yanagita, Manabu Muto, Tomohiro Terada, Atsushi Yonezawa

研究成果: Article査読

抄録

Purpose: Proteinuria can cause interindividual variability in the pharmacokinetics of therapeutic antibodies and may affect therapeutic efficacy. Here, we measured the serum and urinary concentrations of bevacizumab (BV) and nivolumab (NIVO) in patients with proteinuria and reported a case series of these patients. Methods: Thirty-two cancer patients who received BV every 3 weeks or NIVO every 2 weeks between November 2020 and September 2021 at Kyoto University Hospital were enrolled in this study. The serum and urinary concentrations of BV and NIVO were measured using liquid chromatography-tandem mass spectrometry. Results: We divided the BV-treated patients and the NIVO-treated patients into two groups based on the urine protein-creatinine ratio (UPCR): UPCR 1 g/g or higher (BV, n = 9; NIVO, n = 3) and UPCR less than 1 g/g (BV, n = 14; NIVO, n = 6). Serum concentrations of the therapeutic antibodies adjusted by their doses were significantly lower in both BV- and NIVO-treated patients with UPCR 1 g/g or higher compared to those with less than 1 g/g. In patients with UPCR 1 g/g or higher, urinary concentrations of the therapeutic antibodies adjusted by their serum concentrations and urinary creatinine concentrations tended to increase. Conclusion: This case-series study suggests a possibility of reduction in serum concentrations of BV and NIVO in patients with proteinuria by urinary excretion of these drugs.

本文言語English
ジャーナルCancer Chemotherapy and Pharmacology
DOI
出版ステータスAccepted/In press - 2024

ASJC Scopus subject areas

  • 腫瘍学
  • 毒物学
  • 薬理学
  • 癌研究
  • 薬理学(医学)

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