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Makino Y, Makihara-Ando R, Ogawa T, Sato H, Goto Y, Kanda S, Horinouchi H, Fujiwara Y, Ohe Y, Yamamoto N. Individual optimal dose of amrubicin to prevent severe neutropenia in Japanese patients with lung cancer. Cancer Sci 2019; 110:3573-3583. [PMID: 31505087 PMCID: PMC6825008 DOI: 10.1111/cas.14194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/02/2019] [Accepted: 09/04/2019] [Indexed: 12/22/2022] Open
Abstract
This study determined individual optimal amrubicin doses for Japanese patients with lung cancer after platinum‐based treatment. We carried out population pharmacokinetic and pharmacodynamic modeling incorporating gene polymorphisms of metabolizing enzymes and transporters. Fifty patients with lung cancer, who were given 35‐40 mg/m2 amrubicin on days 1‐3 every 3‐4 weeks, were enrolled. Mechanism‐based modeling described relationships between the pharmacokinetics of amrubicin and absolute neutrophil counts. A population pharmacokinetic and pharmacodynamic model was developed for amrubicin and amrubicinol (active metabolite), connected by a delay compartment. The final model incorporated body surface area as a covariate of amrubicin and amrubicinol clearance and distribution volume. SLC28A3 single nucleotide polymorphism (rs7853758) was also incorporated as a constant covariate of the delay compartment of amrubicinol. Performance status was considered a covariate of pharmacokinetic (amrubicinol clearance) and pharmacodynamic (mean maturation time) parameters. Twenty‐nine patients with grade 4 neutropenia showed higher amrubicinol area under the plasma concentration‐time curve from 0 to 72 hours (AUC0‐72, P = .01) and shorter overall survival periods than other patients did (P = .01). Using the final population pharmacokinetic and pharmacodynamic model, median optimal dose to prevent grade 4 neutropenia aggravation was estimated at 22 (range, 8−40) mg/m2 for these 29 patients. We clarified correlations between area under the plasma concentration‐time curve from 0 to 72 hours of amrubicinol and severity of neutropenia and survival of patients given amrubicin after platinum chemotherapy. This analysis revealed important amrubicin pharmacokinetic‐pharmacodynamic covariates and provided useful information to predict patients who would require prophylactic granulocyte colony stimulating factor.
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Affiliation(s)
- Yoshinori Makino
- Department of Pharmacy, National Cancer Center Hospital, Tokyo, Japan.,Division of Pharmacokinetics/Pharmacodynamics, Department of Pharmacology, Toxicology, and Therapeutics, School of Pharmacy, Showa University, Tokyo, Japan
| | | | - Takanori Ogawa
- Division of Pharmacokinetics/Pharmacodynamics, Department of Pharmacology, Toxicology, and Therapeutics, School of Pharmacy, Showa University, Tokyo, Japan.,Certara G.K., Tokyo, Japan
| | - Hitoshi Sato
- Division of Pharmacokinetics/Pharmacodynamics, Department of Pharmacology, Toxicology, and Therapeutics, School of Pharmacy, Showa University, Tokyo, Japan
| | - Yasushi Goto
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Shintaro Kanda
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Hidehito Horinouchi
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Yutaka Fujiwara
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Yuichiro Ohe
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Noboru Yamamoto
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan.,Department of Experimental Therapeutics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Tokyo, Japan
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