PMID- 33191320 OWN - NLM STAT- MEDLINE DCOM- 20210416 LR - 20210519 IS - 1349-7235 (Electronic) IS - 0918-2918 (Print) IS - 0918-2918 (Linking) VI - 60 IP - 8 DP - 2021 Apr 15 TI - A Multicenter Study of Docetaxel at a Dose of 100 mg/m(2) in Japanese Patients with Advanced or Recurrent Breast Cancer. PG - 1183-1190 LID - 10.2169/internalmedicine.5089-20 [doi] AB - Objective This study examined the pharmacokinetics, safety and anti-tumor activity of docetaxel at a dose of 100 mg/m(2) in Japanese patients with advanced or recurrent breast cancer. Methods Japanese patients with advanced or recurrent breast cancer received docetaxel at a dose of 100 mg/m(2) intravenously every three weeks. The pharmacokinetics were assessed during the first cycle. The patients were allowed to receive supportive care drugs based on the indications and dosages in Japan. Results Six eligible patients aged 39-65 years old and 27 treatment cycles were analyzed. All patients experienced one or more adverse events (AEs). The common AEs were neutropenia, thrombocytopenia, alopecia, rash, diarrhea, neuropathy (sensory), fatigue, nausea, fever, hypoalbuminemia, alanine transaminase (ALT) increased, constipation, and taste alteration. Grade 3 or 4 AEs included neutropenia, leukopenia, anemia, lymphopenia, decreased appetite, gamma-glutamyl transpeptidase (GTP) increased, aspartate transaminase (AST) increased, ALT increased, hypertension and cellulitis which were all reversible. There were no cases of febrile neutropenia, serious AEs or deaths. The median number of cycles was six. Dose reductions were not observed and most cycles were administered at their intended doses. No complete response and three partial responses were observed in four assessable patients with evaluable lesions. The maximum concentration and area under the blood concentration-time curve were 3,417.5 ng/mL and 4.35 mug・hr/mL (mean), respectively. Conclusion Docetaxel at a dose of 100 mg/m(2) was tolerable with acceptable safety profiles and effective for Japanese patients with advanced or recurrent breast cancer with appropriate supportive therapies, and pharmacokinetic (PK) profiles which corresponded approximately with the findings of previous clinical studies. FAU - Hirata, Taizo AU - Hirata T AD - Department of Medical Oncology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Japan. FAU - Ozaki, Shinji AU - Ozaki S AD - Department of Breast Surgery, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Japan. FAU - Tabata, Masahiro AU - Tabata M AD - Departments of Allergy and Respiratory Medicine, Okayama University Hospital, Japan. FAU - Iwamoto, Takayuki AU - Iwamoto T AD - Departments of Breast and Endocrine Surgery, Okayama University Hospital, Japan. FAU - Hinotsu, Shiro AU - Hinotsu S AD - Department of Biostatistics, Sapporo Medical University, Japan. FAU - Hamada, Akinobu AU - Hamada A AD - Division of Clinical Pharmacology & Translational Research, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Japan. FAU - Motoki, Takayuki AU - Motoki T AD - Department of Surgery, Okayama Saiseikai General Hospital, Japan. FAU - Nogami, Tomohiro AU - Nogami T AD - Department of Surgery, Tsuyama Chuo Hospital, Japan. FAU - Shien, Tadahiko AU - Shien T AD - Departments of Breast and Endocrine Surgery, Okayama University Hospital, Japan. FAU - Taira, Naruto AU - Taira N AD - Departments of Breast and Endocrine Surgery, Okayama University Hospital, Japan. FAU - Matsuoka, Junji AU - Matsuoka J AD - Departments of Breast and Endocrine Surgery, Okayama University Hospital, Japan. FAU - Doihara, Hiroyoshi AU - Doihara H AD - Departments of Breast and Endocrine Surgery, Okayama University Hospital, Japan. LA - eng PT - Journal Article PT - Multicenter Study DEP - 20201116 PL - Japan TA - Intern Med JT - Internal medicine (Tokyo, Japan) JID - 9204241 RN - 0 (Taxoids) RN - 15H5577CQD (Docetaxel) SB - IM MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols MH - *Breast Neoplasms/drug therapy MH - Docetaxel/therapeutic use MH - Drug Administration Schedule MH - Humans MH - Japan/epidemiology MH - Middle Aged MH - Neoplasm Recurrence, Local/drug therapy MH - Taxoids/therapeutic use PMC - PMC8112988 OTO - NOTNLM OT - 100 mg/m2 OT - Japanese OT - advanced or recurrent cancer OT - docetaxel OT - phase I study COIS- Author's disclosure of potential Conflicts of Interest (COI). Taizo Hirata: Honoraria, Eisai. Hiroyoshi Doihara: Research funding, Kyowa Hakko Kirin. EDAT- 2020/11/17 06:00 MHDA- 2021/04/17 06:00 PMCR- 2021/04/15 CRDT- 2020/11/16 05:57 PHST- 2020/11/17 06:00 [pubmed] PHST- 2021/04/17 06:00 [medline] PHST- 2020/11/16 05:57 [entrez] PHST- 2021/04/15 00:00 [pmc-release] AID - 10.2169/internalmedicine.5089-20 [doi] PST - ppublish SO - Intern Med. 2021 Apr 15;60(8):1183-1190. doi: 10.2169/internalmedicine.5089-20. Epub 2020 Nov 16.