PMID- 31538342 OWN - NLM STAT- MEDLINE DCOM- 20210211 LR - 20210211 IS - 1552-4604 (Electronic) IS - 0091-2700 (Linking) VI - 60 IP - 2 DP - 2020 Feb TI - Pharmacokinetics of Neoadjuvant Axitinib Influenced the Efficacy in Patients With Advanced Renal Cell Carcinoma. PG - 256-263 LID - 10.1002/jcph.1521 [doi] AB - Although axitinib shows a good objective response rate and acceptable tolerability for advanced renal cell carcinoma, substantial differences in drug concentrations among individuals have hampered the reliable administration of the drug in a neoadjuvant setting. This study aimed to evaluate the relationship between axitinib pharmacokinetics and clinical efficacy in patients with advanced renal cell carcinoma treated in a neoadjuvant setting. We retrospectively reviewed 16 patients who underwent neoadjuvant axitinib treatment from prospective phase 2 study cohorts treated with axitinib and assessed whether the drug concentration was associated with clinical efficacy for primary tumors of advanced metastatic/oligometastatic clear cell renal cell carcinoma. Axitinib was administered orally at a starting dose of 5 mg twice daily for 2 months in principle before the operation, and the axitinib pharmacokinetics were examined. Best response, reduction rate, adverse events (AEs), and surgical complication were assessed. Four patients (25.0%) showed a partial response, and 12 (75.0%) had stable disease, with a mean reduction rate of 22.8%. No progressive disease was noted, and 9 of the 16 patinets (56.3%) showed downstaging. The trough level of axitinib significantly correlated with the objective response rate (P = .0052) and best tumor reduction (P = .0128). All AEs could be safely managed until termination of the dosing period. With respect to perioperative complications, grade 2 anemia was observed. Neoadjuvant axitinib treatment showed acceptable antitumor activity and safety profile for advanced renal cell carcinoma. The pharmacokinetics of neoadjuvant axitinib influenced the efficacy in patients with advanced renal cell carcinoma. CI - (c) 2019, The American College of Clinical Pharmacology. FAU - Yamamoto, Yoshiaki AU - Yamamoto Y AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. FAU - Otori, Toru AU - Otori T AD - Faculty of Pharmacy, Kindai University, Higashiosaka, Osaka, Japan. FAU - Inoue, Ryo AU - Inoue R AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. FAU - Yano, Seiji AU - Yano S AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. FAU - Hirata, Hiroshi AU - Hirata H AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. FAU - Matsumoto, Hiroaki AU - Matsumoto H AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. FAU - Matsuyama, Kenji AU - Matsuyama K AD - Faculty of Pharmacy, Daiichi College of Pharmaceutical Sciences, Fukuoka, Fukuoka, Japan. FAU - Matsuyama, Hideyasu AU - Matsuyama H AD - Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi, Japan. LA - eng PT - Journal Article DEP - 20190919 PL - England TA - J Clin Pharmacol JT - Journal of clinical pharmacology JID - 0366372 RN - 0 (Antineoplastic Agents) RN - C9LVQ0YUXG (Axitinib) RN - Clear-cell metastatic renal cell carcinoma SB - IM MH - Adult MH - Aged MH - Antineoplastic Agents/adverse effects/*pharmacokinetics MH - Axitinib/adverse effects/*pharmacokinetics MH - Carcinoma, Renal Cell/*drug therapy/surgery MH - Clinical Trials, Phase II as Topic MH - Female MH - Humans MH - Kidney Neoplasms/*drug therapy/surgery MH - Male MH - Middle Aged MH - Neoadjuvant Therapy/adverse effects MH - Retrospective Studies MH - Treatment Outcome OTO - NOTNLM OT - VEGFR-TKI OT - antitumor activity OT - neoadjuvant axitinib OT - pharmacokinetics OT - renal cell carcinoma EDAT- 2019/09/21 06:00 MHDA- 2021/02/12 06:00 CRDT- 2019/09/21 06:00 PHST- 2019/05/24 00:00 [received] PHST- 2019/08/16 00:00 [accepted] PHST- 2019/09/21 06:00 [pubmed] PHST- 2021/02/12 06:00 [medline] PHST- 2019/09/21 06:00 [entrez] AID - 10.1002/jcph.1521 [doi] PST - ppublish SO - J Clin Pharmacol. 2020 Feb;60(2):256-263. doi: 10.1002/jcph.1521. Epub 2019 Sep 19.